US Patent Class 297
CHAIRS AND SEATS



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  SEATING DEVICE REORIENTS AS UNIT
2  DF  .~ To expose nonoccupant support
3  DF  .~ Inverting
4  DF  PORTABLE BOTTOM WITH OCCUPANT ATTACHER
5  DF  WITH OCCUPANT-PROPELLED WALKER OR SKATER FRAME
6  DF  .~ Bottom movable to nonuse position
7  DF  WITH REMOVABLE OR REORIENTABLE CRIB SIDE
8  DF  .~ Fabric crib side
9  DF  .~ Side added to front edge of bottom
10  DF  .~ Side storable within or upon seating device
11  DF  .~.~ Within or upon armrest
12  DF  .~.~ Side withdrawn laterally of device
13  DF  FOLDING BOTTOM PERMITS SEAT ROTATION ABOUT VERTICAL AXIS
14  DF  BOTTOM AND BACK CONNECTED TO AND FOLDABLE IN WALL OR PARTITION
15  DF  .~ In floor
16.1  DF  COLLAPSIBLE CHAIR; I.E., RELATIVELY FOLDING BOTTOM, BACK, AND LEGS
16.2  DF  .~ Collapsed to a compact bundle having all rigid elongated elements extending in a single longitudinal direction
17  DF  .~ Collapsed components form self-contained carrying case
18  DF  .~ Nonpivoted crossed legs
19  DF  .~ With means to hold chair in plural operative configurations
20  DF  .~.~ By adjustable leg-to-rocker connection
21  DF  .~.~ Set means operative between back post and rear leg
22  DF  .~.~.~ Back-to-leg prop
23  DF  .~.~.~.~ Single element forms back post and front leg
24  DF  .~.~ Set means interconnects front leg and rear leg
25  DF  .~.~.~ Brace or tie interconnection
26  DF  .~.~.~.~ Bottom forms or supported by tie
27  DF  .~.~ Set means include armrest
28  DF  .~.~.~ Rigid with armrest
29  DF  .~ Journaled connections of parts permit occupant to change configuration
30  DF  .~ With concurrently folding footrest
31  DF  .~ Front leg folds relative to integral bottom-rear leg; e.g., beach type
32  DF  .~ With folding rocker
33  DF  .~.~ Rocker disengages from leg to permit folding
34  DF  .~ Rearwardly folding back
35  DF  .~ With folding armrest
36  DF  .~.~ Laterally swinging
37  DF  .~.~.~ To overlie or underlie bottom
38  DF  .~.~ Slidably connected to chair component
39  DF  .~.~ Back, arm, bottom, and front leg form collapsible parallelogram
40  DF  .~.~ Folds forwardly and downwardly
41  DF  .~.~ Pivoted to integral back and leg
42  DF  .~ Laterally collapsible
43  DF  .~.~ Against fixed standard
44  DF  .~.~ Folding back or bottom sections
45  DF  .~.~ Fabric bottom and back
46  DF  .~ Back and legs collapse concurrently
47  DF  .~.~ Parallel leg pairs
48  DF  .~.~ Back articulated to both leg pairs
49  DF  .~.~.~ Above and below bottom
50  DF  .~.~ Back-to-leg articulation above back-to-bottom articulation
51  DF  .~ Back and legs collapse independently
52  DF  .~.~ Back pivoted to and abutting a leg
53  DF  .~.~ To overlie and underlie bottom
54  DF  .~.~.~ Noncrossed legs
55  DF  .~ Relatively collapsible bottom, rear legs, and integral back and front legs
56  DF  .~.~ Crossed legs
57  DF  .~.~.~ Bottom detachably or slidably connected to back
58  DF  .~.~ Rear leg pivoted to back above bottom connection
59  DF  .~ Relatively collapsible bottom, front legs, and integral back and rear legs
60  DF  .~.~ Upwardly tilting bottom elevates pivoted front legs
61  DF  HEADREST INTERCONNECTED WITH BACK FOR RELATIVE CONCURRENT MOVEMENT
62  DF  COMPONENT REORIENTABLE TO STACKED BUNKS
63  DF  COMPONENT OF ADJACENT SEATS REORIENTABLE TO SINGLE BED
64  DF  .~ Back pivots rearwardly between and coplanar with bottoms
65  DF  .~.~ Bottom moves horizontally responsive to reclining of back
66  DF  .~.~ Rear seat component supports reclined back
67  DF  .~ Facing seats
68  DF  LEGREST OR FOOTREST INTERCONNECTED TO MOVE RELATIVE TO BOTTOM AND CONCURRENT WITH BOTTOM OR BACK
69  DF  .~ With means to permit independent adjustment of legrest or footrest
70  DF  .~.~ Footrest adjustable independently of legrest movement
71  DF  .~ Common actuator controls vertical adjustment and relative movement of parts
72  DF  .~ Back reversible as to bottom
73  DF  .~.~ Back movement disposes footrest for use from rear
74  DF  .~.~.~ Common rocker arm carries opposed footrest
75  DF  .~ Relatively movable rest sections move simultaneously
76  DF  .~.~ Footrest extends angularly of depending legrest
77  DF  .~ Face-to-face seats suspended to oscillate
78  DF  .~ Interconnection includes back-controlled movable armrest
79  DF  .~.~ Armrest linkage connected to legrest below legrest-to-bottom pivot
80  DF  .~.~ Armrest directly pivoted to upper extension of legrest
81  DF  .~.~.~ With concurrently movable bottom
82  DF  .~.~.~.~ Bottom pivoted to supporting frame at rear
83  DF  .~ With means to move bottom relative to and concurrently with back
84  DF  .~.~ Rest advances forwardly of bottom
85  DF  .~.~.~ Advancing linkage includes lazy tong pivoted to rest
86  DF  .~.~ Common actuator articulates bottom and rest to back
87  DF  .~.~ Bottom actuator for rest
88  DF  .~ Bottom and back movable as unit relative to legrest
89  DF  .~.~ Advancing legrest pivoted to lazy tong linkage
90  DF  .~ Interconnector articulated to back extension below back-to-bottom pivot
91  DF  .~.~ By plural links
92  DF  CHAIR WITH INTERCHANGEABLE AND REVERSIBLE BOTTOM AND BACK
93  DF  .~ One-piece bottom and back
94  DF  BACK REVERSIBLE AS TO BOTTOM; E.G., WALKOVER TYPE
95  DF  .~ Back movement tilts bottom oppositely
96  DF  .~.~ Gear actuator
97  DF  .~.~ Back-actuated cam in bottom-carried slot
98  DF  .~.~.~ Cam carried by back support
99  DF  .~.~.~ Cam actuator slidably connected to back
100  DF  .~ Bisector link rigidly connected to back
101  DF  .~ Multiple links, pivotally connected to back
102  DF  .~.~ Crossed link back inverter
103  DF  .~.~ Parallelogram linkage
104  DF  .~ Link pivoted to back and armrest
105  DF  DISPLACEABLE BOTTOM EXPOSES SUPPLEMENTAL BODY SUPPORT
106  DF  .~ Lazy tong-mounted supported
107  DF  .~ Laterally extensible
108  DF  .~ Bottom inverts to form extension of subjacent support
109  DF  .~.~ Plural sections exposed by inverting bottom
110  DF  .~.~ Armrest or back inverts with bottom to support extension
111  DF  .~ Supplemental body support positioned forwardly of bottom
112  DF  BACK CARRIES STORED SUPPLEMENTAL BODY SUPPORT
113  DF  .~ Armrest movable from recess in back
114  DF  .~ Supplemental support pivoted to upper end of back
115  DF  ARMREST MOVABLE TO DIVERSE USE POSITION
116  DF  .~ Pivots laterally
117  DF  .~.~ Releasable from back-connected upright position
118  DF  CONVERTIBLE
119  DF  .~ Table
120  DF  .~.~ Additional table leaf extensible from converting component
121  DF  .~.~ Common table with plural bottoms
122  DF  .~.~ Sectional table formed of bottom and back
123  DF  .~.~ Bottom and back move as unit
124  DF  .~.~ Back-to-table top
125  DF  .~.~.~ Rear of back
126  DF  .~.~.~.~ Extends beyond bottom for concurrent use
127  DF  .~.~.~.~ Supported on armrest
128  DF  .~.~.~.~.~ Slidably connected to armrest
129  DF  .~ To nonoccupant support device
130  DF  .~ Alternately usable seat mounts
131  DF  .~.~ Rocker retractable to inoperative position
132  DF  .~.~.~ Ends of composite rockers contact inwardly
133  DF  .~.~ Detachable rocker
134  DF  .~.~ Seat detachable from subjacent table or stool
135  DF  WITH TABLE, DESK, OR EASEL
136  DF  .~ Seat supported within periphery of apertured table
137  DF  .~.~ Seat rotatable about vertical axis
138  DF  .~.~ Seat movable along table-mounted horizontal track
139  DF  .~ Table forms carrying case for seat
140  DF  .~ Seat inoperatively positionable beneath table
141  DF  .~.~ Pivotally movable seat
142  DF  .~.~.~ Horizontally swinging
143  DF  .~.~ Slides on track or guide
144  DF  .~ Extensible from within or beneath seat component
145  DF  .~.~ From armrest
146  DF  .~.~ From back
147  DF  .~ Extensible from wall or receptacle
148  DF  .~ Table supported on both arms
149  DF  .~.~ Horizontally adjustable
150  DF  .~.~.~ And movable to inoperative position
151  DF  .~.~.~ Pin and slot type
152  DF  .~.~ Means for attaching seat and table to adjacent support
153  DF  .~.~ Removable
154  DF  .~.~ Movable to inoperative position
155  DF  .~.~.~ To side of chair
156  DF  .~ Straddle-type seat
157.1  DF  .~ Table with opposed seating
158.1  DF  .~.~ With semi-enclosing support structure (e.g., booth)
158.2  DF  .~.~.~ Movably mounted table or seat
158.3  DF  .~.~ Planar horizontal seating (e.g., picnic table)
158.4  DF  .~.~.~ Folding
158.5  DF  .~.~.~ Having separable components
159.1  DF  .~.~ Folding
160  DF  .~ Tablet-arm type
161  DF  .~.~ Adjustable to multiple use positions
162  DF  .~.~ Connected to move to inoperative position
163  DF  .~ Table behind seat
164  DF  .~.~ Both independently vertically adjustable
165  DF  .~.~.~ Tiltable seat
166  DF  .~.~.~.~ Single pedestal
167  DF  .~.~ Tiltable seat
168  DF  .~.~.~ Vertically adjustable
169  DF  .~.~.~ With tiltable table
170  DF  .~ Chair-secured standard supports table
171  DF  .~.~ Standard is vertical extension of chair leg
172  DF  .~.~ Standard spaced from chair by base element
173  DF  .~ Table pivotally connected to seat
174  DF  .~ Table in front of seat
175  DF  MILKER STOOL TYPE
176  DF  .~ With tail guard or holder
177  DF  .~ Pail support movable as unit relative to seat
178  DF  .~.~ Pail support vertically movable
179  DF  .~ Adjustable as to pail size
180.1  DF  WITH HEAT EXCHANGER OR MEANS TO PROVIDE FLUID OR VAPOR TREATMENT
180.11  DF  .~ Portable supplemental pad
180.12  DF  .~ Electric heating element
180.13  DF  .~ Power source propels air for heat exchange
180.14  DF  .~.~ Fan directly attached to a chair or seat component
180.15  DF  .~ Liquid medium
180.16  DF  .~ Occupant's motion actuates a ventilating means (e.g., rocking movement, etc.)
181  DF  SIMULATION; E.G., ANIMAL OR VEHICLE
182  DF  WITH DEBRIS CATCHER
183.1  DF  WITH HANDLE
183.2  DF  .~ Movable to inoperative position
183.3  DF  .~.~ Alternate use (e.g., prop for baby seat, etc.)
183.4  DF  .~ Adjustable plural use positions
183.5  DF  .~ For use with chair in collapsed position (e.g., stadium chair)
183.6  DF  .~ For nonoccupant use
183.7  DF  .~.~ Seat back grip
183.8  DF  .~.~.~ Detachable
183.9  DF  .~ For use by occupant while seated
184.1  DF  WITH WEATHER SHIELD OR INSECT PROTECTOR (E.G., CANOPY, SCREEN, ETC.)
184.11  DF  .~ Detachable or movable for seat occupancy
184.12  DF  .~ Transparent visor
184.13  DF  .~ For child seat
184.14  DF  .~ Enclosure type
184.15  DF  .~ Flexible canopy having framework
184.16  DF  .~.~ Umbrella type
184.17  DF  .~.~ U-shaped elements have ends which converge toward a common laterally extending axis (e.g., baby carriage type, etc.)
185  DF  WITH MIRROR
186  DF  WITH MUSICAL INSTRUMENT OR INSTRUMENT SUPPORT
187  DF  PRIE-DIEU TYPE OF KNEELING STAND
188.01  DF  WITH HOLDER OR RECEPTACLE FOR DISPARATE ARTICLE
188.02  DF  .~ Holder or receptacle collapses as seat pivots
188.03  DF  .~ For apparel
188.04  DF  .~ On or integral with backrest
188.05  DF  .~.~ Adjustable
188.06  DF  .~.~ Detachable
188.07  DF  .~.~ Having closure means
188.08  DF  .~ Directly under occupant seating portion
188.09  DF  .~.~ Accessible by displacement of seating surface
188.1  DF  .~.~.~ Pivotally displaced
188.11  DF  .~.~ Horizontally slidable (e.g., drawer)
188.12  DF  .~.~ Detachable
188.13  DF  .~.~ Having closure means
188.14  DF  .~ On or integral with armrest (e.g., beverage cup holder)
188.15  DF  .~.~ Movably mounted to inoperative position
188.16  DF  .~.~.~ Into armrest
188.17  DF  .~.~.~.~ By sliding motion
188.18  DF  .~.~ Holder detachable from armrest
188.19  DF  .~.~ Having closure means
188.2  DF  .~ Detachable from chair structure
188.21  DF  .~ Adjustable with respect to the chair structure
195.1  DF  STRADDLE SEAT (E.G., SADDLE TYPE, ETC.)
195.11  DF  .~ Other than cycle seat
195.12  DF  .~ Plural related seats
195.13  DF  .~.~ Detachable seat
196  DF  .~ Base-attached cantilevered spring mounts seat
197  DF  .~ Filamented supporting surface
198  DF  .~ Laminated leaf spring-mounted
199  DF  .~ Pneumatic cushion
200  DF  .~.~ Plural independent compartments
201  DF  .~ Sectional or split relatively movable supporting surface
202  DF  .~ Depressed portion spaces body supporting surfaces
203  DF  .~ Rear end supported on inclined rod independently of support for front end
204  DF  .~ With means to adjustably set tautness of supporting surface
205  DF  .~.~ Rod mounting bracket includes tautness setting means
206  DF  .~.~ Front spring adjustably clamped to rear spring
207  DF  .~.~ Threaded adjusting means extends longitudinally of seat
208  DF  .~ Coil spring-mounted
209  DF  .~.~ Vertically oriented
210  DF  .~.~.~ Serially arranged tension and compression springs
211  DF  .~.~.~ Parallel stems each supported by encircling spring
212  DF  .~.~.~ Rear coil directly secured to front connected member
213  DF  .~.~ Axis extends laterally of seat
214  DF  .~ With cushioned top
215  DF  .~ Bow spring-mounted
215.1  DF  .~ Including an upwardly extending portion at rear of seat
215.11  DF  .~.~ Extends upwardly above waist to provide back support
215.12  DF  .~.~.~ Movable back support
215.13  DF  .~ Adjustable to plural use positions
215.14  DF  .~.~ Longitudinally
215.15  DF  .~.~ Angularly
215.16  DF  .~ Molded plastic saddle
216.1  DF  CRASH SEAT
216.11  DF  .~ Force-absorbing means incorporated into child seat
216.12  DF  .~ Force-absorbing means incorporated into headrest area
216.13  DF  .~ Force-absorbing means incorporated into back
216.14  DF  .~.~ For absorbing rear-impact force
216.15  DF  .~ Bottom and back interconnected for relative concurrent movement
216.16  DF  .~ Bottom and back movable as unit in response to force
216.17  DF  .~.~ Rectilinearly vertically
216.18  DF  .~.~ In horizontal plane
216.19  DF  .~.~ Tiltably
216.2  DF  .~.~.~ Mounted on support legs
217.1  DF  COMBINED
217.2  DF  .~ With measuring device
217.3  DF  .~ With electrical feature
217.4  DF  .~.~ Sound producing
217.5  DF  .~.~.~ Enclosure
217.6  DF  .~.~ Illumination
217.7  DF  .~ Mounted on accommodating platform (e.g., stairs, deck, etc.)
218.1  DF  UPHOLSTERY COVER DETACHABLY CONNECTED TO FRAME
218.2  DF  .~ Cover connector attached to cushion
218.3  DF  .~ Cover attached by an element mounted to the frame
218.4  DF  .~ Cover connector mounted by hem inserted elongated member (e.g., drawstring, bar, etc.)
218.5  DF  .~ Cover attached to frame by separate element
219.1  DF  DETACHABLE SUPPLEMENTAL FLEXIBLE PAD OR COVER
219.11  DF  .~ For straddle seat
219.12  DF  .~ For child seat
220  DF  .~ Headrest
221  DF  .~.~ With cover supply
222  DF  .~.~.~ With cutter
223  DF  .~ Reversible or with replaceable section
224  DF  .~ With elastic section
225  DF  .~ Wraparound one-piece bottom, back, and shoulder or arm
226  DF  .~ Hem-inserted keeper bar
227  DF  .~ Armrest
228  DF  .~.~ And bottom or back cover formed of one piece
228.1  DF  .~ Slipcover for bottom or back
228.11  DF  .~ Having flexible hem-inserted securing means (e.g., drawstring, elastic band, etc.)
228.12  DF  .~ Having elongated flexible free-end securing means
228.13  DF  .~ Having rigid or semirigid securing member (e.g., zipper, hook, ring, snap, button, etc.)
229  DF  .~ One-piece bottom and back
230.1  DF  SUPPLEMENTAL BACK
230.11  DF  .~ Flexible occupant back-engaging surface spans framework
230.12  DF  .~ Including a rigid panel
230.13  DF  .~ Back and supplemental back together form occupant back-engaging surface
230.14  DF  .~ Including a means to adjust supplemental back relative to a seat back
250.1  DF  SUPPLEMENTAL SEAT (E.G., CHILD SEAT, ETC.)
251  DF  .~ Armrest-supported
252  DF  .~ Fore or aft board straddling clamps
253  DF  .~ Secured by bottom-back crevice
254  DF  .~ Back-connected
255  DF  .~.~ Collapsible or foldable unit
256  DF  .~.~.~ Rigid panel-type bottom
256.1  DF  .~ Adjustable to plural operative positions
256.11  DF  .~.~ Vertically
256.12  DF  .~.~ About a vertical axis; i.e., rotates
256.13  DF  .~.~ Tiltable
256.14  DF  .~.~ Reversible
256.15  DF  .~ Having a front guard or barrier
256.16  DF  .~ Detachably mounted to a support base
256.17  DF  .~ For shopping cart
232  DF  PLURAL RELATED SEATS
233  DF  .~ Combinable to form single seat
234  DF  .~ Movement of one seat effects storage of either seat
235  DF  .~.~ Both move to effect storage of one
236  DF  .~.~ Moving seat stores within or beneath other bottom
237  DF  .~.~.~ Stored seat withdraws to substitute for other
238  DF  .~.~ Within back
239  DF  .~ Nested
240  DF  .~ Relatively rotatable
241  DF  .~.~ One seat has floor roller
242  DF  .~.~ Coaxially
243  DF  .~ Tandem
244  DF  .~ Oppositely facing
245  DF  .~ Face to face
246  DF  .~.~ Oscillating on rollers
247  DF  .~.~ Oscillating on rockers
248  DF  .~ Coupled side-by-side
249  DF  .~.~ Adjustable within or to arcuate row
257  DF  .~ Relatively movable
258.1  DF  ROCKER-MOUNTED
259.1  DF  .~ Bottom connected to rocker for movement supplemental to rocking motion
259.2  DF  .~.~ Providing reclining motion
259.3  DF  .~.~ Providing swinging motion
259.4  DF  .~.~ Spring attached
260.1  DF  .~ With means to impart rocking motion
260.2  DF  .~.~ Motor operated
260.3  DF  .~.~ Actuating footrest
261.1  DF  .~ Track-mounted rocker (e.g., platform rocker)
261.2  DF  .~.~ Providing grooved guide
261.3  DF  .~.~.~ With anti-friction means
261.4  DF  .~.~ Rocker pivotally connected to track
262.1  DF  .~.~ Meshed teeth engagement
263.1  DF  .~.~ Rotatable about vertical axis to reorientate chair
263.2  DF  .~.~.~ Having anti-friction means to facilitate rotation
264.1  DF  .~.~ Spring return to neutral position
265.1  DF  .~.~.~ Coil spring
266.1  DF  .~.~.~.~ Extensible
267.1  DF  .~.~.~.~.~ With opposing compressible coil spring
268.1  DF  .~.~.~ Leaf spring
268.2  DF  .~.~.~ Transversely extending spring (e.g., torsion bar)
269.1  DF  .~.~ With mean to lock rockers to track
270.1  DF  .~ With means to limit or inhibit rocking motion
270.2  DF  .~.~ Pivotal stop
270.3  DF  .~.~ Plural stops
270.4  DF  .~.~ To plural operative positions
270.5  DF  .~.~ Stop engages ground
271.1  DF  .~ With attached footrest or legrest
271.2  DF  .~.~ Mounted on roller or wheel
271.3  DF  .~.~ Adjustable
271.4  DF  .~.~ Pivotally connected to bottom or support frame
271.5  DF  .~ With floor or ground contacting rocker
271.6  DF  .~.~ Having curved rail
272.1  DF  .~ Rocker attachment
272.2  DF  .~.~ Cushion or shoe
272.3  DF  .~.~.~ Inflatable
272.4  DF  .~.~ Tip, guard, or shield
273  DF  OSCILLATING SUSPENDER CONNECTED TO OR THROUGH ADJUNCTIVE REST
274  DF  .~ Baby jumper type
275  DF  .~.~ With belt or garment restrainer
276  DF  .~ Suspender passes through armrest to bottom
277  DF  .~ Suspender connected to back
278  DF  .~.~ Adjustable connection for movement relative to bottom
279  DF  .~.~ And legrest or footrest
280  DF  .~.~ And armrest or side frame
281  DF  .~ Armrest or side frame-connected
282  DF  .~.~ Bottom dependent from subjacently mounted armrest
283.1  DF  CHANGEABLE OR REVERSIBLE SUPPORTING SURFACE
283.2  DF  .~ Back and bottom
283.3  DF  .~ Back
283.4  DF  .~ Headrest
284.1  DF  BOTTOM OR BACK WITH MEANS TO ALTER CONTOUR
284.2  DF  .~ Having adjustment means for seat surface tension
284.3  DF  .~ Having a plurality of adjacent relatively adjustable sections
284.4  DF  .~ Providing support for lower back (i.e., lumbar) region
284.5  DF  .~.~ Portable with seat attacher
284.6  DF  .~.~ Having a fluent material within flexible container
284.7  DF  .~.~ Rectilinear vertical adjustment
284.8  DF  .~.~ Rectilinear horizontal adjustment
284.9  DF  .~ Providing support for the sides of a seated occupant
284.11  DF  .~ Located at the front of the seat bottom
285  DF  BACK MOVEMENT RESILIENTLY OPPOSED IN OPERATING POSITION
286  DF  .~ Resilient support includes armrest
287  DF  .~.~ Integral leg and armrest
288  DF  .~.~.~ Rear leg
289  DF  .~.~ Rearward back tilting axially compresses spring
290  DF  .~.~ Spring leaf or spring rod armrest
291  DF  .~ Spring centers back on pivot
292  DF  .~ Coil spring surrounds horizontal pivot
293  DF  .~ Coil spring comprises horizontal pivot
294  DF  .~ Resilient leg integral with bottom or back
295  DF  .~.~ Bottom and back
296  DF  .~ Back secured to resilient upright bar or rod
297  DF  .~.~ Bar or rod rigidly secured to bottom
298  DF  .~.~ Bar or rod operatively adjustable with respect to bottom
299  DF  .~ Spring mounts terminal of back
300.1  DF  .~ Back and seat adjust simultaneously
300.2  DF  .~.~ Back tilts while seat inclination adjusts
300.3  DF  .~.~.~ Fluid-spring
300.4  DF  .~.~.~ Torsion bar or torsion spring
300.5  DF  .~.~.~ Coil spring
300.6  DF  .~.~.~ Including back limiting device
300.7  DF  .~.~.~.~ Adjustable
300.8  DF  .~.~.~.~.~ Manually
301.1  DF  .~ Back adjusts independent of seat
301.2  DF  .~.~ Fluid-spring
301.3  DF  .~.~ Torsion bar or torsion spring
301.4  DF  .~.~ Coil spring
301.5  DF  .~.~ Including back movement limiting device
301.6  DF  .~.~.~ Adjustable
301.7  DF  .~.~.~.~ Manually
302.1  DF  .~ Back and bottom adjust in a fixed relationship
302.2  DF  .~.~ Fluid-spring
302.3  DF  .~.~ Torsion bar or torsion spring
302.4  DF  .~.~ Coil spring
302.5  DF  .~.~ Including back movement limiting device
302.6  DF  .~.~.~ Adjustable
302.7  DF  .~.~.~.~ Manually
303.1  DF  .~ Adjustable resistance
303.2  DF  .~.~ Fluid spring
303.3  DF  .~.~ Torsion bar or torsion spring
303.4  DF  .~.~ Coil spring
303.5  DF  .~.~.~ Coaxial adjustment member extends through coil
307  DF  .~ Constantly oriented during up-and-down movement
308  DF  .~.~ Back immovable relative to bottom
309  DF  .~.~ Bottom component resiliently supports back
310  DF  WITH MEANS TO CONTROL REARWARD CHAIR TIPPING
311  DF  MOVABLE BOTTOM
312  DF  .~ Independently movable resilient bottom sections
313  DF  .~ Tiltable
314  DF  .~.~ Laterally
315  DF  .~.~.~ With laterally folding back
316  DF  .~.~ Interconnected with back for relative concurrent movement
317  DF  .~.~.~ Bottom slides forwardly while tilting
318  DF  .~.~.~.~ On roller
319  DF  .~.~.~ Back-actuated cam tilts bottom
320  DF  .~.~.~ Back supports rear of bottom
321  DF  .~.~.~.~ Front of bottom carried by link
322  DF  .~.~.~ Bottom tilts with concurrent horizontal movement
323  DF  .~.~.~ With armrest interconnected for mutual movement
324  DF  .~.~.~ Back moved by folding of bottom
325  DF  .~.~ Bottom and back tiltable as unit
326  DF  .~.~.~ About stationary horizontal pivot
327  DF  .~.~.~.~ To plural use positions
328  DF  .~.~.~.~.~ With set means horizontally spaced from pivot
329  DF  .~.~.~ With concurrent horizontal movement
330  DF  .~.~ Motor actuated
331  DF  .~.~ Movable to inoperative position
332  DF  .~.~.~ Biased to position
333  DF  .~.~.~.~ Spring axis coaxial with pivot axis of bottom
334  DF  .~.~.~ On link
335  DF  .~.~.~ About stationary horizontal pivot
336  DF  .~.~.~.~ Disengages holding abutment rearwardly of pivot
337  DF  .~ Movable independently of back
338  DF  .~.~ Vertically
339  DF  .~.~.~ With force-multiplying means
340  DF  .~ Interconnected with back for relative concurrent movement
341  DF  .~.~ Back tilts and bottom moves forwardly
342  DF  .~.~.~ Rearwardly tilting of back
343  DF  .~.~.~.~ Back slidably connected to back support
344.1  DF  .~ Bottom and back movable as a unit
344.11  DF  .~.~ Mounted for horizontal oscillating movement
344.12  DF  .~.~ Vertically adjustable
344.13  DF  .~.~.~ And horizontally adjustable
344.14  DF  .~.~.~ Horizontal movement concurrent with vertical movement; i.e., oblique movement
344.15  DF  .~.~.~ Pivotal linkage assembly
344.16  DF  .~.~.~.~ Gas or hydraulic cylinder
344.17  DF  .~.~.~.~ Motor actuated
344.18  DF  .~.~.~ Slidably coupled components (e.g., telescoped, etc.)
344.19  DF  .~.~.~.~ Gas or hydraulic cylinder
344.2  DF  .~.~.~.~ Motor actuated
344.21  DF  .~.~ About vertical axis; i.e., rotates
344.22  DF  .~.~.~ Including means to lock unit at distinct rotated positions
344.23  DF  .~.~.~.~ Motor actuated
344.24  DF  .~.~.~ Having additional movement in horizontal plane
344.25  DF  .~.~.~ Back tilted to permit seat rotation
344.26  DF  .~.~.~ Including antifriction feature (e.g., ball bearings, etc.)
350  DF  LATERALLY FOLDING OR COLLAPSING BACK
351  DF  .~ One-piece bottom and back
352  DF  PORTABLE BACK WITH BOTTOM ATTACHER
353  DF  MOVABLE BACK
354.1  DF  .~ Tiltable
354.11  DF  .~.~ Pivot axis located at or adjacent to a central point of back
354.12  DF  .~.~ Plural distinct occupant-supporting positions
354.13  DF  .~.~.~ Movable to a rear-horizontal position
356  DF  .~.~.~ Full stroke adjusting mechanism
357  DF  .~.~.~ Vertical displacement of back disengages holder
358  DF  .~.~.~ Common actuator adjusts height and inclination
359  DF  .~.~.~ Back-pivoted armrest carries latch or holder
360  DF  .~.~.~.~ Bottom-pivoted armrest
361.1  DF  .~.~.~ Mechanical operator tilts back fore and aft
362  DF  .~.~.~.~ Gear train
362.11  DF  .~.~.~.~ Motor actuated
362.12  DF  .~.~.~.~ Actuated shaft
362.13  DF  .~.~.~.~.~ Gas or hydraulic cylinder
362.14  DF  .~.~.~.~.~ Threaded shaft
363  DF  .~.~.~ Axially slidable bolt or pawl
364  DF  .~.~.~.~ Spring-pressed
365  DF  .~.~.~.~.~ Engages movable rack
366  DF  .~.~.~ Rack and pawl
367  DF  .~.~.~.~ Actuator disengages pawl
368  DF  .~.~.~.~.~ Actuator rigid with pawl
369  DF  .~.~.~.~.~.~ Spring-pressed
370  DF  .~.~.~.~ Actuator disengages rack
371  DF  .~.~.~.~.~ Actuator rigid with rack
372  DF  .~.~.~.~ Depending pawl or rack prop pivoted to back
373  DF  .~.~.~ Serrated clamp hinge
374  DF  .~.~.~ Friction detent
375  DF  .~.~.~.~ Clamp acts on axially moving rod
376  DF  .~.~.~.~ Pin and slot
377  DF  .~.~.~ Held by prop behind back
378.1  DF  .~.~ Foldable forwardly over bottom
378.11  DF  .~.~.~ Including an inertia-responsive latch
378.12  DF  .~.~.~ Held erect by a releasable latch
378.13  DF  .~.~.~.~ Latch element supported by a structure separated from chair or seat (e.g., vehicle mounted striker, etc.)
378.14  DF  .~.~.~ Including means to hold back in forwardly folded position
380  DF  .~.~.~ Tension tie supports back
381  DF  .~.~.~.~ Armrest tie
382  DF  .~.~.~ Fabric hinges bottom to back
383  DF  .~ Horizontally
391  DF  HEADREST
392  DF  .~ Chin support
393  DF  .~ Occupant attached
394  DF  .~ Detachable headrest and armrest unit
395  DF  .~ Wall- or ceiling-supported
396  DF  .~ Extension of upper back
397  DF  .~ Portable, with seat attacher
398  DF  .~.~ Laterally collapsible
399  DF  .~.~ U-clamp mounted
400  DF  .~.~.~ Adjustable
401  DF  .~.~.~.~ Spring clamp
402  DF  .~.~.~.~ Screw clamp
403  DF  .~ Movable to inoperative position rearwardly of back
404  DF  .~ Resiliently mounted
405  DF  .~ Ball- and socket-mounted
406  DF  .~ Adjustable laterally
407  DF  .~.~ On shiftable mounting
408  DF  .~ Angularly movable about horizontal axis
409  DF  .~.~ With horizontal translator
410  DF  .~ Adjustable rectilinearly vertically
411.1  DF  SUPPORT FOR ARMPIT
411.2  DF  ARMREST
411.21  DF  .~ Mounted to structure other than a chair or seat component
411.22  DF  .~.~ Sill suspended
411.23  DF  .~ Attachable to diverse chairs or seats; i.e., portable
411.24  DF  .~.~ Supported by a seating surface
411.25  DF  .~.~ Connected to a back
411.26  DF  .~ Detachably interfitted to a particular chair or seat at a connecting joint
411.27  DF  .~.~ To bottom
411.28  DF  .~.~.~ And to back
411.29  DF  .~.~ To back only
411.3  DF  .~ Movable to nonuse position
411.31  DF  .~.~ Armrest or its supporting member movable about a vertical axis
411.32  DF  .~.~ Armrest or its supporting member movable about a horizontal axis
411.33  DF  .~.~.~ Supporting member movable about plural horizontal axes
411.34  DF  .~.~.~ Axis parallel to a lateral edge of bottom
411.35  DF  .~ Adjustable to multiple use positions relative to bottom or back
411.36  DF  .~.~ Vertically
411.37  DF  .~.~ Laterally
411.38  DF  .~.~ Angularly
411.39  DF  .~.~.~ Angular adjustment coincides with tilting of the back for relative concurrent movement
411.4  DF  .~ Single element forms plural spaced armrests of a chair or seat
411.41  DF  .~.~ And portion of back
411.42  DF  .~ Formed as one-piece with front leg
411.43  DF  .~ Connected to back and front leg
411.44  DF  .~ Connected to back and bottom
411.45  DF  .~ Mounted on an upwardly extending side panel
411.46  DF  .~ Upholstered
423.1  DF  REST FOR KNEE, LEG, OR FOOT
423.11  DF  .~ For occupant's knee or shin (e.g., sit-kneel type of chair, etc.)
423.12  DF  .~.~ Adjustable relative to chair or seat to plural use positions
423.13  DF  .~.~ Convertible to a chair or seat without kneerest
423.14  DF  .~ For nonoccupant use (e.g., shoe salesman's stool, etc.)
423.15  DF  .~.~ Rest at rear of chair or seat
423.16  DF  .~.~ Kneeling stool
423.17  DF  .~ Including a portion engaging a side of occupant's leg
423.18  DF  .~ Having substitute footrest
423.19  DF  .~ Connected to chair or seat for relative movement
423.2  DF  .~.~ Horizontally slidable from beneath bottom to a position in front of bottom
423.21  DF  .~.~.~ Having a floor-engaging support
423.22  DF  .~.~.~ Having additional movement to an operative position
423.23  DF  .~.~.~.~ Including means for adjusting the rest to plural operative positions
423.24  DF  .~.~.~.~.~ Angular adjusting means
423.25  DF  .~.~ Footrest movably connected to an upright support fixed to chair or seat
423.26  DF  .~.~ Pivoted for vertical swinging (i.e., about horizontal axis)
423.27  DF  .~.~.~ Having a floor-engaging support
423.28  DF  .~.~.~ Pivoted to an unusable position beneath bottom
423.29  DF  .~.~.~ Pivot axis parallel to lateral edge of bottom
423.3  DF  .~.~.~ Pivot axis adjacent and parallel to front edge of bottom
423.31  DF  .~.~.~.~ Held by a prop behind rest
423.32  DF  .~.~.~.~.~ Prop adjusts rest to plural use positions
423.33  DF  .~.~.~.~.~.~ Adjustable friction detent
423.34  DF  .~.~.~.~ Footrest moves relative to legrest
423.35  DF  .~.~.~.~.~ Pivotally movable footrest
423.36  DF  .~.~.~.~.~ Slidably adjustable footrest
423.37  DF  .~.~ Pivoted for lateral swinging; i.e., about vertical axis
423.38  DF  .~.~ Rectilinearly in vertical direction
423.39  DF  .~ Portable
423.4  DF  .~.~ Connectable to a chair or seat
423.41  DF  .~.~ Self-supported
423.42  DF  .~.~.~ Resiliently mounted
423.43  DF  .~.~.~ Rocker type
423.44  DF  .~.~.~ Adjustable to plural operative positions
423.45  DF  .~.~.~.~ Rectilinearly in vertical direction
423.46  DF  .~.~.~.~ Angularly
440.1  DF  HAVING DETACHABLY INTERFITTING PARTS OR COMPONENTS; I.E., KNOCKDOWN
440.11  DF  .~ Detachable fabric component
440.12  DF  .~ Sheet material folded to form a chair or seat
440.13  DF  .~ Slotted components normal to each other
440.14  DF  .~ Modular components
440.15  DF  .~ Interfitted back and bottom or back frame and bottom frame
440.16  DF  .~.~ Including a substantially upright post slidably inserted into an elongated recess
440.17  DF  .~.~ One-piece back and arm
440.18  DF  .~.~ One-piece back and leg
440.19  DF  .~.~.~ Front leg
440.2  DF  .~ Interfitted back and back frame
440.21  DF  .~.~ Including a substantially upright post slidably inserted into an elongated recess
440.22  DF  .~ Interfitted bottom and bottom frame
440.23  DF  .~ Front, rear legs, and armrest together form a unit detachable from bottom or back
440.24  DF  .~ Telescoping hollow parts or components
445.1  DF  BOTTOM, BACK AND LEG (I.E., CHAIR)
446.1  DF  .~ Back or back standard integral with leg
446.2  DF  .~.~ Integral with plural rear legs
447.1  DF  .~.~ Front leg
447.2  DF  .~.~.~ Integral with plural front legs
447.3  DF  .~.~.~ And forms lateral sides of bottom
447.4  DF  .~.~ Legs interbraced between bottom and ground
448.1  DF  .~ Front leg integral with rear leg
448.2  DF  .~.~ Extends along ground surface
449.1  DF  .~ Interbraced bottom, back and leg
450.1  DF  .~ Back or bottom connected at lateral side to end support
451.1  DF  .~ Back standard secured below or to underside of bottom
451.2  DF  .~ Three support legs only
451.3  DF  .~ Two support legs only
451.4  DF  .~ Single non-moving support leg
451.5  DF  .~.~ Cylindrial leg
451.6  DF  .~.~.~ Having diameter equal to that of bottom
451.7  DF  .~ Resilient bottom and leg
451.8  DF  .~ Modular component
451.9  DF  .~ Woven material (e.g., cane or basket chair)
451.11  DF  .~ Plastic material
451.12  DF  .~.~ Integral bottom, back and leg
451.13  DF  .~.~ Hollow component
452.1  DF  BOTTOM OR BACK
452.11  DF  .~ Directly connected bottom and back
452.12  DF  .~.~ One-piece panel
452.13  DF  .~.~.~ Flexible panel fixed to a frame (e.g., fabric, elastomeric sheet, etc.)
452.14  DF  .~.~.~ Rigid or semirigid plastic panel
452.15  DF  .~.~.~.~ Including means to provide or enhance resiliency (e.g., slits, grooves, etc.)
452.16  DF  .~.~ Interconnected cushions for bottom and back
452.17  DF  .~.~.~ Continuous cushioning material (e.g., one-piece cushion, bean bag, etc.)
452.18  DF  .~ Framework
452.19  DF  .~.~ Continuous bottom and back frame
452.2  DF  .~.~ Having elongated hollow member (e.g., tubular, etc.)
452.21  DF  .~ Contoured bottom
452.22  DF  .~.~ Planar bottom with a central recess
452.23  DF  .~.~ Laterally extending contour
452.24  DF  .~.~.~ Contoured rigid base
452.25  DF  .~.~.~.~ Including symmetrical thigh-support portions
452.26  DF  .~.~.~ Preshaped foam pad
452.27  DF  .~.~.~.~ Different densities of foam
452.28  DF  .~.~.~ Custom fitted for a particular occupant
452.29  DF  .~ Contoured back
452.3  DF  .~.~ For lower back; i.e., lumbar region
452.31  DF  .~.~.~ Rigid or semirigid preshaped panel
452.32  DF  .~.~.~ Preshaped cushioning material
452.33  DF  .~.~ Laterally extending contour
452.34  DF  .~.~.~ Including a projected side member
452.35  DF  .~.~.~.~ Preshaped cushioning material
452.36  DF  .~.~.~.~ Rigid or semirigid preshaped panel
452.37  DF  .~.~ Having varying density foam
452.38  DF  .~ Having a trim panel
452.39  DF  .~ Cantilevered bottom or back
452.4  DF  .~ Having a laterally adjustable dimension
452.41  DF  .~ Having fluent material
452.42  DF  .~ Including a ventilating means
452.43  DF  .~.~ Supplemental ventilating pad
452.44  DF  .~.~.~ Wire spring element between pads' layers
452.45  DF  .~.~.~ Projecting elements
452.46  DF  .~.~ Apertures in primary bottom or back
452.47  DF  .~.~.~ Aperture in upholstery
452.48  DF  .~ Cushioned
452.49  DF  .~.~ Including a support spring
452.5  DF  .~.~.~ Coil compression spring
452.51  DF  .~.~.~.~ Encapsulated by cushion
452.52  DF  .~.~.~ Noncoil wire spring (e.g., linear or sinuous wires, etc.)
452.53  DF  .~.~.~.~ Encapsulated by cushion
452.54  DF  .~.~.~ Spring integral with frame of bottom or back
452.55  DF  .~.~ Including a support panel (e.g., pan-type seat, etc.)
452.56  DF  .~.~.~ Flexible panel (e.g., fabric or elastomeric sheet, web, etc.)
452.57  DF  .~.~.~ Encapsulated panel
452.58  DF  .~.~ Having a fixed cover
452.59  DF  .~.~.~ Fastened to a support framework
452.6  DF  .~.~.~.~ Including a fixing means extending through cushioning material
452.61  DF  .~.~.~ Bonded to cushioning material
452.62  DF  .~.~.~ Cover formed from a plurality of discrete sections
452.63  DF  .~ Made of individual elongated members extending across a support frame (e.g., webs, straps, slats, stringed beads, etc.)
452.64  DF  .~.~ Intermeshed (e.g., crisscrossed, etc.)
452.65  DF  .~ Rigid or semirigid hollow shell
461  DF  PADDED STOOL
462  DF  .~ Hassock type
464  DF  BODY OR OCCUPANT RESTRAINT OR CONFINEMENT
465  DF  .~ Jacket, vest, or suit restraint
466  DF  .~ Leg or arm restraint
467  DF  .~ Having crotch strap or post
468  DF  .~ Safety belt or harness; e.g., lap belt or shoulder harness
469  DF  .~.~ Passive restraint system
470  DF  .~.~ With means to absorb energy of acceleration
471  DF  .~.~.~ Deformable or stretchable element
472  DF  .~.~.~.~ Element is permanently deformed; i.e., one-time use
473  DF  .~.~ Belt or harness rides on seat connected slide
474  DF  .~.~ Retractable
475  DF  .~.~.~ Belt winds upon take-up reel
476  DF  .~.~.~.~ Having means to lock belt against further extension when in its occupant-restraining position
477  DF  .~.~.~.~.~ Electrically operated
478  DF  .~.~.~.~.~ Inertia actuated
479  DF  .~.~.~ Having means to lock belt against further extension when in its occupant-restraining position
480  DF  .~.~ Inertia-responsive locking or tightening of belt or harness
481  DF  .~.~ Having means for storage in nonuse position or in position to be handy for use
482  DF  .~.~ Belt or belt anchor covers
483  DF  .~.~ Shoulder belt or harness
484  DF  .~.~.~ Engageable with both shoulders of occupant
485  DF  .~.~ Having means providing easily releasable attachment to a chair or seat
486  DF  .~ Shoulder restraint
487  DF  .~ Front guard or barrier
488  DF  .~.~ Padded or cushioned member
463.1  DF  CHAIR HARDWARE OR ATTACHMENT (E.G., BRACKET, OPERATING LEVER, LEG EXTENSION, ETC.)
463.2  DF  MISCELLANEOUS
******************************
CROSS-REFERENCE ART COLLECTION
******************************
900  DF  CHAIR FOR SUNTANNING IN THE PRONE (I.E., FACEDOWN) POSITION
******************************
DIGESTS
******************************
DIG 1  DD  Foam
DIG 2  DD  Molded
DIG 3  DD  Pneumatic
DIG 4  DD  Wheelchair
DIG 5  DD  Fireproof
DIG 6  DD  Velcro
DIG 7  DD  Rocker/recliner
DIG 8  DD  Inflatable bellows
DIG 10  DD  Occupant-arising assist
DIG 11  DD  Baby bouncer