US Patent Class 92
EXPANSIBLE CHAMBER DEVICES



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  WITH TEMPERATURE COMPENSATION
2  DF  ONE WORKING MEMBER RECIPROCATES AND ANOTHER ROTATES COMMON OUTPUT MEMBER
3  DF  WITH DISENGAGEABLE ROTARY DRIVE FOR MOVING WORKING MEMBER
5 R  DF  WITH (1) SIGNAL OR INDICATOR OR (2) INSPECTION WINDOW IN EXPANSIBLE CHAMBER WALL PORTION
5 L  DF  .~ With lock
6 R  DF  EFFECTIVE AREA OF WORKING MEMBER END FACE SELECTIVELY VARIABLE
6 D  DF  .~ With diaphragm
7  DF  WITH OVERCENTER MEANS TO BIAS WORKING MEMBER IN OPPOSITE DIRECTIONS OVER DIFFERENT PORTIONS OF STROKE
8  DF  WITH MEANS TO CONTROL FLOW OF NON-WORKING ARRESTING FLUID FOR WORKING MEMBER
9  DF  .~ Flow control means positioned between chambers having a common wall movable with working member
10  DF  .~ Work member position control
11  DF  .~.~ With auxiliary adjustable throttle (12)
12  DF  .~ Adjustable throttle (11)
12.1  DF  DISPLACEMENT CONTROL OF PLURAL CYLINDERS ARRANGED IN PARALLEL, RADIAL, OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS
12.2  DF  .~ Parallel cylinders
13  DF  .~.~ WITH ADJUSTABLE MEANS TO VARY STROKE OF WORKING MEMBER
13.1  DF  .~ Having motor-operated adjustment
13.2  DF  .~ Flexible wall-type working member
13.3  DF  .~ Stroke of one working member adjustable relative to another
13.4  DF  .~ Predetermined discrete incremental adjustment positions
13.41  DF  .~.~ Adjustment by assembly or disassembly
13.5  DF  .~ Independent adjustment of opposite stroke limits of single reciprocating working member
13.51  DF  .~ Axial adjustment of spaced, rigidly interconnected working member faces
13.6  DF  .~ Adjustable abutment positioned within working chamber
13.7  DF  .~ BY adjusting or limiting motion of relatively movable power transmission element
13.8  DF  .~ Adjustment means includes external axially extending threaded piston stem
14  DF  WORKING MEMBER MOVES LOAD AND LATCHING MEANS FOR LOAD
15  DF  WITH RELEASABLE STOP OR LATCH MEANS TO PREVENT MOVEMENT OF WORKING MEMBER
16  DF  .~ With timing or delay means
17  DF  .~ Engages member coaxial with and rotatable relative to working member
18  DF  .~ Includes interfitting parts engageable at plural positions including position intermediate stroke limits
19  DF  .~.~ Self-engaging
20  DF  .~ Engages power element movable relative to working member
21 R  DF  .~ Plural selectively operable actuators for releasable means
21 MR  DF  .~.~ Manual release
22  DF  .~ Relatively movable working members with interdependent means
23  DF  .~ Means includes element interfitting between working member and fixed part
24  DF  .~.~ Element actuated or retained in operative position by relatively movable fluid responsive member
25  DF  .~.~.~ With pivoted link between element and member
26  DF  .~.~.~ Resilient element
27  DF  .~.~ Fluid actuated (28)
28  DF  .~ Fluid actuated (27)
29  DF  WITH RELEASABLE LATCH MEANS BETWEEN WORKING MEMBER AND POWER TRANSMISSION ELEMENT AXIALLY SLIDABLE THEREIN
30  DF  WITH RESILIENT DETENT
31  DF  RECTILINEARLY MOVING WORKING MEMBER AND COAXIAL OR PARALLEL ELEMENT SLIDABLY INTERENGAGED FOR RELATIVE ROTARY MOVEMENT
32  DF  .~ Working fluid-actuated interengaging means permits unidirectional rotation of element relative to fixed part
33  DF  .~ Element extends through working member portion
34  DF  BELLOWS TYPE EXPANSIBLE CHAMBER
35  DF  .~ Expansible chamber formed by concentric bellows
36  DF  .~ With non-bellows type expansible chamber
37  DF  .~ Plural bellows
38  DF  .~.~ Non-working liquid moved by first bellows effects movement of second bellows
39  DF  .~.~ With common movable wall
40  DF  .~ With separate biasing means
41  DF  .~ With vibration damping means
42  DF  .~ With separate ring-like reinforcing element abutting pleat
43  DF  .~ With stop means to limit axial movement of bellows
44  DF  .~ With guide means
45  DF  .~ Superposed peripherally interconnected elements
46  DF  .~.~ With nonmetallic portion
47  DF  .~ Specific or diverse material (103)
48  DF  PLURAL FLEXIBLE WALL WORKING MEMBERS
49  DF  .~ Diaphragm type having working fluid contacting areas of different size
50  DF  .~ Oppositely movable walls of common chamber (69) (75)
51  DF  MUTUALLY RELATIVELY MOVABLE CYLINDER OR SLEEVE, MEMBER SEALINGLY SLIDABLE THEREIN AND OUTER CYLINDER THEREFOR
52  DF  .~ Cylinder or sleeve forms working member
53  DF  .~ With additional cylinder relatively slidable exteriorly of outer cylinder
54  DF  ROTATING CYLINDER
55  DF  .~ Fluid conduit coaxial with axis of rotation
56  DF  .~ Plural cylinders
57  DF  .~.~ Axes of cylinders parallel to axis of rotation
58  DF  .~.~ Axes of cylinders intersect axis of rotation at common point
58.1  DF  KNOCKDOWN OR FLOW CONDUIT STORAGE OR RETRIEVAL MEANS
59  DF  CONVERTIBLE, OR CHANGEABLE BY ASSEMBLY OR DISASSEMBLY
60  DF  WITH FLEXIBLE OR RESILIENTLY BIASED NON-WORKING MEMBER MOVABLE WALL IN CONSTANT COMMUNICATION WITH WORKING CHAMBER
60.5  DF  SELECTIVE CLEARANCE CONTROL
61  DF  RELATIVELY MOVABLE WORKING MEMBERS
62  DF  .~ First working member moves second coaxial working member through separating abutment surfaces
63  DF  .~.~ With separate biasing means for a working member
64  DF  .~ One a flexible wall type
65  DF  .~ Rigid stem on first working member portion extends through second working member
66  DF  .~ Moving cylinders
67  DF  .~ Oscillating working members
68  DF  .~ Interconnected with common rotatable shaft
69 R  DF  .~.~ Oppositely movable walls of common chamber (50) (75)
70  DF  .~.~.~ Shaft axis parallel to axes of working members (71)
69 A  DF  .~.~.~ One piston rod passes through opposite piston rod
69 B  DF  .~.~.~ Single crankshaft offset from center of work chamber
71  DF  .~.~ Shaft axis parallel to axes of working members (70)
72  DF  .~.~ Shaft axis intersected by axes of working members
73  DF  .~.~.~ Parallel working members
74  DF  .~.~.~.~ Shaft extends transversely through working members
75  DF  .~ Oppositely movable walls of common chamber (50) (69)
76  DF  .~ Interconnected by linkage having relatively movable members
77  DF  GROUND EMBEDDED EXPANSIBLE CHAMBER
78  DF  WITH FLUID PURIFYING MEANS
79  DF  .~ Means separates gas from liquid
80  DF  WITH FORCE EXERTING MEANS TO MOVE FLUID FROM NON-WORKING CHAMBER
81  DF  WORKING MEMBER FORMS RESERVOIR FOR NON-COMPRESSIBLE WORKING FLUID
82  DF  WITH MEANS TO CONTROL FLUID FLOW FROM NON-WORKING CHAMBER
83  DF  LIQUID POOL SEALING RELATIVELY MOVABLE CHAMBER WALLS
84  DF  RESILIENT MEANS INTERPOSED BETWEEN WORKING MEMBER AND RELATIVELY MOVABLE POWER TRANSMISSION ELEMENT
85 R  DF  WITH CUSHIONING MEANS EFFECTIVE OVER A PORTION ONLY OF STROKE
85 A  DF  .~ Metal spring
85 B  DF  .~ Fluid spring
86  DF  WITH REMOVAL CONDUIT FOR LIQUID SEEPAGE FROM EXPANSIBLE CHAMBER
86.5  DF  PASSAGE IN CYLINDER FOR APPLICATION OF SEPARATE FLUID TO CYLINDER AND PISTON SIDE WALL INTERFACE
87  DF  WITH NON-SEALING CLEANING MEANS
88  DF  SEALED OPENING IN LONGITUDINAL WALL OF CHAMBER FOR RECEIVING WORKING MEMBER PORTION
89  DF  COLLAPSIBLE CHAMBER WALL PORTION (E.G., HINGED OR FLEXIBLE WALL)
90  DF  .~ Wall portion formed of flexible material
91  DF  .~.~ Envelope having restricted fluid opening
92  DF  .~.~.~ Non-metallic
93  DF  .~.~ Annular flexible wall portion peripherally sealed to spaced relatively fixed concentric rigid members
94  DF  .~.~ With separate biasing means
95  DF  .~.~.~ Adjustable
96  DF  .~.~ Diaphragm type
97  DF  .~.~.~ Axially spaced flexible wall portions with interposed incompressible means
98 R  DF  .~.~.~ Entire periphery secured to rigid working chamber forming wall
99  DF  .~.~.~.~ With undistortable member secured to central portion of diaphragm
100  DF  .~.~.~.~.~ Member includes coextensive plate-like elements secured to opposite side of diaphragm
101  DF  .~.~.~.~ Abutment connection between diaphragm and power transmission element
102  DF  .~.~.~.~ With separate seal means between diaphragm and member
98 D  DF  .~.~.~.~ Rolling diaphragm
103 R  DF  .~.~.~ Specific or diverse material (47)
103 F  DF  .~.~.~.~ With reinforcement embedded in diaphragm
103 SD  DF  .~.~.~.~ Synthetic diaphragm (non-metal and non-rubber)
103 M  DF  .~.~.~.~ Metal diaphragm
104  DF  .~.~.~ Corrugated
105  DF  .~.~ Coaxial radially spaced relatively movable undistortable members joined by flexible wall
106  DF  FLUID CONDUIT IN CONSTANT COMMUNICATION WITH RELATIVELY ROTATABLE WORKING CHAMBER
107  DF  ANNULAR WORKING MEMBER OR ANNULAR LINEARLY EXTENDING CHAMBER THEREFOR
108  DF  .~ Axially extending hollow stem on working member
109  DF  PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM
110  DF  .~ Hollow stem forms axially extending fluid passage
111  DF  .~.~ Plural laterally spaced passages
112  DF  .~.~ Passage communicates with lateral port extending through piston side wall portion
113  DF  .~ Relatively movable elongated part within stem
114  DF  .~.~ Part and stem relatively axially adjustable
115  DF  .~.~.~ Part forms actuator for piston side wall portion adjusting means
116  DF  WITH AXIALLY EXTENDING ELEMENT MOUNTED ON WORKING MEMBER FOR RELATIVE ROTARY MOVEMENT ONLY
117 R  DF  MOVING CYLINDER
118  DF  .~ Pivoted
119  DF  .~.~ With fluid conduit extending through pivoted connection
117 A  DF  .~ Stationary piston or movable piston with moving cylinder
120  DF  OSCILLATING WORKING MEMBER OR CYLINDER THEREFOR
121  DF  .~ Oscillatory shaft with radially extending vane
122  DF  .~.~ Plural angularly related vanes
123  DF  .~.~ With lost motion connection between vane and shaft
124  DF  .~.~ With resiliently biased vane peripheral portion
125  DF  .~.~ Vane includes non-metallic peripheral sealing portion
126  DF  WITH DIFFERENTIAL RADIAL THRUST PRODUCING MEANS FOR WORKING MEMBER
127  DF  .~ Fluid pressure type
128  DF  WITH ASSEMBLY OR DISASSEMBLY FACILITATING MEANS
129  DF  ABUTMENT CONNECTION BETWEEN WORKING MEMBER AND POWER TRANSMISSION ELEMENT
130 R  DF  WITH SEPARATE BIASING MEANS FOR WORKING MEMBER
131  DF  .~ Biasing means maintains working member intermediate stroke end limits
132  DF  .~ Tension spring
133  DF  .~ Adjustable
134  DF  .~ Fluid spring
135  DF  .~ Biasing means engages working fluid contacting portion of working member
130 A  DF  .~ Bias normally held inoperative by fluid pressure
130 B  DF  .~ Bias other than coil spring
130 C  DF  .~ Bias external of both expanding and contracting chamber
130 D  DF  .~ Plural coil springs
136  DF  WITH TOOTHED GEAR, SPLINE OR THREAD RIGID WITH WORKING MEMBER
137  DF  WITH FLEXIBLE TRANSMISSION ELEMENT SECURED TO WORKING MEMBER
138  DF  WITH LINKAGE OR TRANSMISSION ENGAGING PORTION INTERMEDIATE SPACED WORKING MEMBER END FACES
139  DF  WITH CYLINDER WALL CONTACTING GUIDE ARTICULATED TO PISTON
140  DF  WITH LINKAGE OR TRANSMISSION HAVING RELATIVELY MOVABLE MEMBERS
141  DF  WITH SEPARABLE FLUID DEFLECTING SHIELD OR BAFFLE ON WORKING MEMBER
142  DF  WITH RESERVOIR FOR NON-COMPRESSIBLE WORKING FLUID
143  DF  WITH MOVEMENT DAMPING MEANS (E.G., FLUID FLOW RESTRICTOR)
144  DF  WITH ENCOMPASSING HEAT EXCHANGE MODIFYING SPACE OR JACKET
145  DF  COMBINED
146  DF  PLURAL UNITARILY MOUNTED CYLINDERS OR FRAME THEREFOR (161)
147  DF  .~ With casing or support for rotary shaft
148  DF  .~.~ Three or more radially arranged cylinders
149  DF  .~.~ V-type
150  DF  .~.~ Coaxial cylinder (151)
151  DF  .~ Coaxial cylinders (150)
152  DF  .~.~ With different cross-sectional areas
153  DF  WITH LUBRICATING MEANS
154  DF  .~ Lubricant entrained by working fluid
155  DF  .~ Portion of expansible chamber device includes solid lubricating material
156  DF  .~ Valve means in lubricant passage
157  DF  .~ Lubricant passage extends axially through articulated piston rod
158  DF  .~ Piston has lubricant retaining or conducting means
159  DF  .~.~ Pocket or chamber
160  DF  .~.~ Port or passage extending through side wall portion
161  DF  WITH SUPPORT OR FRAME (146)
161.5  DF  .~ Wheel supported
162 R  DF  SPACED CYLINDER AND PISTON WALLS DEFINE PASSAGE BETWEEN OPPOSED PISTON SIDE WALL ENDS
162 P  DF  .~ Passage in piston
163  DF  FLUID CONDUIT OR PORT IN FIXED WALL OF WORKING CHAMBER
164  DF  .~ Port in separable chamber end closure
165 R  DF  WITH GUIDE OR SEAL ON CYLINDER END PORTION FOR PISTON OR MEMBER MOVED BY PISTON
166  DF  .~ Additional guide is spaced chamber end wall
167  DF  .~ Guide movable laterally
168  DF  .~ Non-metallic seal means between piston or member and end portion
165 PR  DF  .~ Prevent rotation
169.1  DF  CYLINDER DETAIL
169.2  DF  .~ With reinforcing member
169.3  DF  .~.~ Extending through working member
169.4  DF  .~.~.~ Coaxial sleeve or tube
170.1  DF  .~ Nonmetallic piston contacting portion
171.1  DF  .~ Cylinder or liner retained in casing by casing closure or closure associated means
172  DF  PISTON
173  DF  .~ With rotation imparting fluid impinging surface on piston part
174  DF  .~ Liquid between axially spaced side wall portions
175  DF  .~ Spaced faces joined by rigid stem (e.g., spool)
176  DF  .~ With enclosed insulating space in piston part
177  DF  .~ Non-circular
178  DF  .~ With ball or roller anti-friction means on side wall portion
179  DF  .~ Articulated connecting rod end forms portions of piston face
181 R  DF  .~ With fluid passage in piston face
182  DF  .~.~ Passage communicates with packing receiving recess
183  DF  .~.~.~ Valved
184  DF  .~.~.~ Passage in opposed piston faces
185  DF  .~.~.~.~ Passages communicate with common packing receiving recess
181 P  DF  .~.~ Passage thru piston to opposite chamber
186  DF  .~ With ported chamber in piston part for circulating heat exchange fluid
187  DF  .~ With separable means for pivotally mounting connecting rod to piston
188  DF  .~.~ Means retained by annulus positioned about piston periphery
189  DF  .~.~ Piston formed of separable end face and side wall portion
190  DF  .~.~.~ Means secures end face portion to side wall portion
191  DF  .~.~ Fastener for separable means extends through end face portion
192  DF  .~ Plural integral radially extending resilient metallic sealing tongues on side wall portion
193  DF  .~ With spring means for biasing side wall portion radially
194  DF  .~.~ Biased portion comprises peripheral axially extending flexible lip
195  DF  .~.~ Open ended hollow skirt comprises biased portion
196  DF  .~.~.~ Spring part positioned in skirt slit
197  DF  .~.~.~ Adjustable bias (199)
198  DF  .~.~.~ Split annular type spring (200)
199  DF  .~.~ Adjustable bias (197)
200  DF  .~.~ Split annular type spring (198)
201  DF  .~ Radially adjustable side wall portion
202  DF  .~.~ Adjustable portion comprises open-ended hollow skirt
203  DF  .~.~.~ Adjustment effected by wedge member movable relative to skirt (207)
204  DF  .~.~ Adjustment effected by selectively removable spacer or skim element between relatively movable parts
205  DF  .~.~ Side wall portion positioned between relatively axially adjustable rigid end members
206  DF  .~.~.~ With beveled abutting surfaces between side wall portion and an end member
207  DF  .~.~ Adjustment effected by wedge member movable relative to side wall portion (203)
208  DF  .~ Open-ended hollow skirt type (e.g., trunk type)
209  DF  .~.~ Frusto conical skirt
210  DF  .~.~ With weight balancing means
211  DF  .~.~ Element of diverse material extending through skirt wall abuts circumferentially extending resilient ring
212  DF  .~.~ With nonmetallic portion
213  DF  .~.~ End face surface includes areas of diverse material
214  DF  .~.~ Spaced wall skirt
215  DF  .~.~ Separate resilient elements secures end face portion to skirt portion
216  DF  .~.~ Plural separable parts
217  DF  .~.~.~ Interconnected by relative rotation of parts
218  DF  .~.~.~.~ With means to prevent relative rotation of parts
219  DF  .~.~.~ Interconnected without separate fastening means
220  DF  .~.~.~ Threaded fastener
221  DF  .~.~.~.~ Fastener extends through end face
222  DF  .~.~ Specific or diverse material; or welded, brazed or soldered joint
223  DF  .~.~.~ Coated
224  DF  .~.~.~ End face and skirt periphery of diverse material
225  DF  .~.~.~ Element of diverse material for limiting radial movement of skirt part
226  DF  .~.~.~.~ Bi-metallic restraining element
227  DF  .~.~.~.~ Element positioned about periphery of skirt
228  DF  .~.~.~.~ Element portion embedded in piston part
229  DF  .~.~.~.~.~ Annular element
230  DF  .~.~.~.~.~.~ Element encircles connecting rod pin supporting boss
231  DF  .~.~.~ Welded, brazed or soldered (260)
232  DF  .~.~ Spaced skirt parts jointed by resilient arcuate web
233  DF  .~.~ Oval-shaped skirt portion
234  DF  .~.~ Skirt includes slit
235  DF  .~.~.~ Slit transverse to skirt axis
236  DF  .~.~.~.~ With additional angularly related slit
237  DF  .~.~ Circumferentially spaced portions at free end of skirt
238  DF  .~.~ Connecting rod pin supporting boss laterally spaced from skirt portion
239  DF  .~.~ With rib or strut means on piston part
240  DF  .~ Side wall portion includes peripheral axially extending flexible lip
241  DF  .~.~ With embedded reinforcing means in lip portion (254)
242  DF  .~.~ Plural axially spaced lips
243  DF  .~.~.~ Oppositely facing
244  DF  .~.~.~.~ Lips formed on separable elements
245  DF  .~.~ Lip forms peripheral portion of imperforate cup shaped element
246  DF  .~.~ Metallic lip
247  DF  .~ Fluid pressure responsive axial movement of end face portion radially moves side wall portion
248  DF  .~ Nonmetallic portion
249  DF  .~.~ Flexible
250  DF  .~.~.~ Flexible side wall portion between separable axially spaced rigid members
251  DF  .~.~.~.~ Wall portion comprises plural axially aligned flexible elements
252  DF  .~.~.~.~.~ Three or more elements
253  DF  .~.~.~ Axially spaced flexible side wall forming elements with interposed rigid spacer member
254  DF  .~.~.~ With imbedded reinforcing means (241)
255  DF  .~ Plural separable parts
256  DF  .~.~ Fastening means for parts include resilient element
257  DF  .~.~ Side wall portion interposed between separable axially spaced rigid members
258  DF  .~.~.~ Rigid members connected by coaxial rigid stem or rod
259  DF  .~.~ Side wall portion and relatively movable piston part having abutting inclined surfaces
260  DF  .~ Welded, brazed or soldered (231)
261  DF  MISCELLANEOUS (E.G., CRANKCASE)
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DIGESTS
******************************
DIG 1  DD  Bearing on piston or cylinder
DIG 2  DD  Fluid bearing
DIG 3  DD  Flexible drive
DIG 4  DD  Lost motion