US Patent Class 238
RAILWAYS: SURFACE TRACK



Electronic
File
Wrappers

Electronic
Patent
Documents

Paper
Patent
Documents

Current as of: June, 1999
Click for Main Headings
Click DF for Definitions
Click for All Classes

Internet Version by PATENTEC © 1999       Terms of Use



Products
and
Services

  DF  CLASS NOTES
1  DF  MISCELLANEOUS
2  DF  ROADBED
3  DF  .~ Highway track
4  DF  .~.~ Metallic
5  DF  .~.~ Concrete
6  DF  .~ Continuous
7  DF  .~.~ Concrete
8  DF  .~ Street crossing
9  DF  .~ Rail paving
10 R  DF  PORTABLE TRACK
11  DF  .~ Embankment or fill
12  DF  .~ Crossovers
13  DF  .~ House moving
14  DF  .~ Traction mats
10 A  DF  .~ Toy truck systems
10 B  DF  .~ Simulated roadbeds
10 C  DF  .~ Continuous roadbeds
10 E  DF  .~ Toy track, rail-guided
10 F  DF  .~ Toy track, slot-guided
14.05  DF  ELECTRICAL CONNECTIONS
14.2  DF  .~ From rail to noncontiguous rail or other object
14.3  DF  .~ Special rail
14.4  DF  .~ Combined rail joint or support
14.5  DF  .~.~ Interposed conductor
14.6  DF  .~.~.~ Rail web contacting
14.7  DF  .~.~ With intermediate bond-wire support
14.8  DF  .~ Dowel pin or inserted key type
14.9  DF  .~ Protected bond
14.1  DF  .~ Plural or laminated bond
14.11  DF  .~.~ On both sides of rails
14.12  DF  .~ Rail bond forms
14.13  DF  .~ Rail-head attached
14.14  DF  .~ Rail-base or flange attached
14.15  DF  .~.~ Molded joint
15  DF  TRACK CURVES
16  DF  .~ Rollers
17  DF  GUARDRAILS
18  DF  .~ Spring
19  DF  .~ Under main rail
20  DF  .~ Two-rail chair
21  DF  .~ Two-rail clamps
22  DF  .~ Spacers
23  DF  .~.~ Tapered
24  DF  STRINGERS
25  DF  .~ Concrete
26  DF  .~ Metallic
27  DF  TIE ARRANGEMENT
28  DF  .~ Diagonal
29  DF  TIES
30  DF  .~ Forms
31  DF  .~.~ Jointed
32  DF  .~.~.~ Hinged
33  DF  .~.~.~ Pivoted ends
34  DF  .~.~ Detachable ends
35  DF  .~.~ Multiple section
36  DF  .~.~ Vertical sandwich
37  DF  .~.~ Horizontal sandwich
38  DF  .~.~ Twin
39  DF  .~.~ Complementary sliding lock
40  DF  .~.~ Truss
41  DF  .~.~.~ Integral
42  DF  .~.~ Stringer ends
43  DF  .~.~ Loop or hook ends
44  DF  .~.~ Spread ends
45  DF  .~.~ Special
46  DF  .~.~.~ Rail joint
47  DF  .~.~.~ Bridge joint
48  DF  .~.~.~ Spring
49  DF  .~.~.~ Old rail
50  DF  .~ Rods
51  DF  .~.~ Rail-base
52  DF  .~.~ Turnbuckle
53  DF  .~.~ Screw rod
54  DF  .~ Cross section
55  DF  .~.~ Two-part
56  DF  .~.~.~ Channels
57  DF  .~.~.~ I-beam
58  DF  .~.~.~ Angles or T's
59  DF  .~.~ Channel flange down
60  DF  .~.~.~ Sheet metal
61  DF  .~.~.~ Rolled
62  DF  .~.~ Channel flange up
63  DF  .~.~.~ Sheet metal
64  DF  .~.~.~ Rolled
65  DF  .~.~ I-beam
66  DF  .~.~.~ Rolled
67  DF  .~.~ T-shape
68  DF  .~.~.~ Cast
69  DF  .~.~.~ Inverted
70  DF  .~.~ Tubular
71  DF  .~.~.~ Multiple
72  DF  .~.~.~ Rectangular
73  DF  .~.~.~.~ Vertical telescope
74  DF  .~.~.~.~ Separate lid and bottom
75  DF  .~.~.~.~ Separate bottom
76  DF  .~.~.~.~ Separate lid
77  DF  .~.~.~.~ Folded sheet
78  DF  .~.~.~.~ Integral
79  DF  .~.~.~.~.~ Cast
80  DF  .~.~.~ Triangular
81  DF  .~.~.~ Circular
82  DF  .~ Corrugated
83  DF  .~ Nonmetallic
84  DF  .~.~ Plastic compound
85  DF  .~.~.~ Internal reinforcements
86  DF  .~.~.~.~ Truss
87  DF  .~.~.~.~ Tube
88  DF  .~.~.~.~ Cast
89  DF  .~.~.~.~ Rolled section
90  DF  .~.~.~.~ Closed loop
91  DF  .~.~.~.~ Rods
92  DF  .~.~.~.~.~ Crosstied
93  DF  .~.~.~.~ Foraminous sheet
94  DF  .~.~.~.~ Wire
95  DF  .~.~.~ Armored
96  DF  .~.~.~.~ Box
97  DF  .~.~.~.~ Tube
98  DF  .~.~.~.~ Side and bottom
99  DF  .~.~.~.~ Side and top
100  DF  .~.~.~.~ Sides
101  DF  .~.~.~.~ Top
102  DF  .~.~.~.~ Top and bottom
103  DF  .~.~.~.~ Bottom
104  DF  .~ End closures
105  DF  .~ Spacers
106  DF  .~ Anchor lugs and ribs
107  DF  .~ Insulation
108  DF  .~.~ Sectional tie
109  DF  PEDESTALS
110  DF  .~ Pot
111  DF  .~.~ Cast
112  DF  .~ Wrought plate
113  DF  .~.~ Inverted "U"
114  DF  .~ Tube or box
115  DF  .~ Concrete block
116  DF  .~.~ Chair bar
117  DF  .~.~ Bar core
118  DF  .~ Wood block
119  DF  .~ Pier
120  DF  .~ Screw
121  DF  RAIL ARRANGEMENT
122  DF  RAILS
123  DF  .~ Rack
124  DF  .~ Turnout
125  DF  .~ Vignoles
126  DF  .~.~ T-base insert
127  DF  .~ Channel
128  DF  .~.~ Integral
129  DF  .~ Trough and filler
130  DF  .~ T-rail
131  DF  .~ Webless or flat
132  DF  .~ Reversible
133  DF  .~.~ Triple head
134  DF  .~ Tubular
135  DF  .~.~ Integral
136  DF  .~ Step tread
137  DF  .~ Biped
138  DF  .~ Base bar
139  DF  .~ Side bars
140  DF  .~ Detachable guard or step
141  DF  .~ Split base and web
142  DF  .~ Split tread
143  DF  .~ Detachable head
144  DF  .~.~ Lap web
145  DF  .~.~ Grooved web
146  DF  .~.~ Integral grooved base
147  DF  .~.~ Web clamp
148  DF  .~ Tread surfaces
149  DF  .~ Webs
150  DF  .~ Substance
151  DF  RAIL JOINTS
152  DF  .~ Insulated
153  DF  .~.~ Transverse abutting
154  DF  .~.~ Chair
155  DF  .~.~.~ Twin
156  DF  .~.~.~.~ Base plate or bolted
157  DF  .~.~.~ Angle
158  DF  .~.~.~.~ Weber type
159  DF  .~.~ Splice bars
160  DF  .~.~.~ With base plate
161  DF  .~.~.~ In channel
161.5  DF  .~ Lubricant- or liquid-containing
162  DF  .~ Cast on
163  DF  .~ Molten filler
164  DF  .~ Welded
165  DF  .~ Switch rail
166  DF  .~ Pivoted
167  DF  .~ Compromise
168  DF  .~ Truss rod
169  DF  .~ Parallel beams
170  DF  .~ Gravity
171  DF  .~ Expansion deflectors
172  DF  .~ Vertical adjustment
173  DF  .~ Yielding rail end
174  DF  .~ Variable levels
175  DF  .~ Special rails
176  DF  .~.~ Channels
177  DF  .~.~ T-web U-base
178  DF  .~.~ Flat
179  DF  .~ Internal key
180  DF  .~ Flush web key
181  DF  .~ Web key splice lock
182  DF  .~ Joint lug key
183  DF  .~ Integral web key and bars
184  DF  .~ Web locks
185  DF  .~ Z-form
186  DF  .~.~ Base-connected
187  DF  .~ Chair
188  DF  .~.~ Twin
189  DF  .~.~.~ Base stiffener
190  DF  .~.~.~ With base plate
191  DF  .~.~.~ Base-bolted
192  DF  .~.~.~ Lapping base sections
193  DF  .~.~.~ Interlocked base sections
194  DF  .~.~.~.~ Longitudinal keys
195  DF  .~.~ Angle
196  DF  .~.~.~ Pivoted
197  DF  .~.~.~ Splice lug engagement
198  DF  .~.~.~ Sliding splice lock
199  DF  .~.~.~.~ Base plate underlap
200  DF  .~.~.~ Weber type
201  DF  .~.~.~ Transverse slide
202  DF  .~.~.~.~ Screw-operated
203  DF  .~.~.~.~ Horizontal wedge
204  DF  .~.~.~.~ Vertical wedge
205  DF  .~.~ Integral
206  DF  .~.~.~ Base filler
207  DF  .~.~.~ One-side filler
208  DF  .~.~.~ Two-side filler
209  DF  .~ Base plate
210  DF  .~.~ Top flange
211  DF  .~.~ Angle-bar underlap
212  DF  .~.~ Angle-bar overlap
213  DF  .~.~ Base stiffeners
214  DF  .~.~ Distorted
215  DF  .~.~ Center seat
216  DF  .~.~ Rail lock
217  DF  .~.~ Side clips
218  DF  .~ Tread bridge
219  DF  .~.~ Rail-head insert
220  DF  .~.~ Rail-head cover
221  DF  .~.~ Notched head
222  DF  .~.~.~ Twin
223  DF  .~.~ Head section
224  DF  .~.~.~ Saddle
225  DF  .~.~ Rail section
226  DF  .~.~.~ Splice key
227  DF  .~.~ Spacer
228  DF  .~.~.~ Expansible
229  DF  .~.~ Web posts
230  DF  .~ Scarf
231  DF  .~.~ Longitudinally assembled
232  DF  .~.~.~ Twin
233  DF  .~.~.~ With vertical drop
234  DF  .~.~ Longitudinal or vertical
235  DF  .~.~ Vertical drop
236  DF  .~.~ Laterally assembled
237  DF  .~.~.~ Twin
238  DF  .~.~.~ Longitudinal lock
239  DF  .~.~.~.~ Twin
240  DF  .~.~ Angularly assembled
241  DF  .~.~.~ Longitudinal
242  DF  .~.~.~ Lateral
243  DF  .~ Splice bars
244  DF  .~.~ Multiple part
245  DF  .~.~ Toggle
246  DF  .~.~ Rail guide
247  DF  .~.~.~ Attached
248  DF  .~.~ Rail sleeve
249  DF  .~.~ Longitudinal bolts
250  DF  .~.~ Bar lugs and splice keys
251  DF  .~.~ Bar bolts and splice keys
252  DF  .~.~ Slotted bolt locks
253  DF  .~.~ Bolt keys
254  DF  .~.~ Rail-groove swing
255  DF  .~.~ Cam-tightened
256  DF  .~.~ U-bars and loops
257  DF  .~.~ Vertical bevel flange
258  DF  .~.~ Tapered
259  DF  .~.~ Springs
260  DF  .~.~ Fasteners
261  DF  .~.~.~ Double and split keys
262  DF  .~.~ Nut and bolt lock
263  DF  .~.~ Adjustable joint clamps
264  DF  RAIL SEATS
265  DF  .~ With anchor in concrete
266  DF  .~ English chair
267  DF  .~ T-rail
268  DF  .~ Inverted channel rail
269  DF  .~ Cast
270  DF  .~.~ With tie
271  DF  .~.~ Plane top
272  DF  .~ Wrought
273  DF  .~.~ With tie
274  DF  .~.~ Plane top
275  DF  .~ Twin jaws
276  DF  .~.~ Wrought
277  DF  .~ Pivoted
278  DF  .~ Jaw and seat
279  DF  .~ Gravity
280  DF  .~ Saddles
281  DF  .~ Vertical adjustment
282  DF  .~ Lateral adjustment
283  DF  .~ Cushions
284  DF  .~.~ Metal springs
285  DF  .~.~ Wood blocks
286  DF  .~ Spiking blocks
287  DF  TIE-PLATES
288  DF  .~ Gauge
289  DF  .~ Plural tie
290  DF  .~ Lap
291  DF  .~.~ Interlock
292  DF  .~ Rail brace
293  DF  .~.~ Integral
294  DF  .~ Spike lock
295  DF  .~.~ Lug on spike
296  DF  .~.~ Pawl
297  DF  .~ Anchors
298  DF  .~.~ Integral
299  DF  .~ Tie butting
300  DF  .~ Sleeve
301  DF  .~ Reversible
302  DF  .~.~ Spring
303  DF  .~ Screw spike
304  DF  .~ Top surface
305  DF  .~ Rotary
306  DF  .~ Rail-base seats
307  DF  .~ Contour
308  DF  .~ Spike-hole arrangement
309  DF  .~ Spike-shank brace
310  DF  FASTENINGS
311  DF  .~ Welded
312  DF  .~ Protective boxes and closures
313  DF  .~ Universal
314  DF  .~ Yoke
315  DF  .~ Rail anchors
316  DF  .~.~ Pawl
317  DF  .~.~ Cam
318  DF  .~.~ Rail recess
319  DF  .~.~ Rail lug
320  DF  .~.~ Distorted rail
321  DF  .~.~ Tie contact
322  DF  .~.~.~ Cam
323  DF  .~.~.~ Swinging clip
324  DF  .~.~.~ Wedge
325  DF  .~.~.~ Bevel slide
326  DF  .~.~.~.~ Reversed lap
327 R  DF  .~.~.~ Twin jaws
328  DF  .~.~.~.~ With wedge
327 A  DF  .~.~.~.~ Two-part, with lock
329  DF  .~.~.~ Diagonal
330  DF  .~.~.~.~ Integral
331  DF  .~ Transverse slide
332  DF  .~.~ Screw-operated
333  DF  .~.~ Horizontal wedge-operated
334  DF  .~.~ Vertical wedge-operated
335  DF  .~ Abutting screw point
336  DF  .~ Rail brace
337  DF  .~.~ Vertical slide
338  DF  .~ Clamps
339  DF  .~.~ Gauge
340  DF  .~.~ Multiple face
341  DF  .~.~ Cam adjustment
342  DF  .~.~ Nut type
343  DF  .~.~ Anchors
344  DF  .~.~.~ Vertical face
345  DF  .~.~.~ Vertical shank
346  DF  .~.~.~ Ratchet
347  DF  .~.~ Bevel guide
348  DF  .~.~ Internal arm
349  DF  .~.~ Spring
350  DF  .~.~ Integral with tie
351  DF  .~.~ Clip type
352  DF  .~.~.~ Double
353  DF  .~.~.~ Vertical wedge
354  DF  .~.~.~ Horizontal wedge
355  DF  .~.~ Hooks
356  DF  .~.~.~ Pivoted
357  DF  .~.~.~ Twin
358  DF  .~.~.~.~ Through bolt
359  DF  .~.~.~.~ Single pivot
360  DF  .~.~ Lever
361  DF  .~.~ Wedges
362  DF  .~.~.~ Parallel
363  DF  .~.~.~ Aligned
364  DF  .~.~.~ Flange
365  DF  .~.~.~ Locks
366  DF  .~ Spikes
367  DF  .~.~ Interlock
368  DF  .~.~ Bent
369  DF  .~.~ Split end
370  DF  .~.~ Plug
371  DF  .~.~ Socket
372  DF  .~.~ Screw
373  DF  .~.~.~ Sockets
374  DF  .~.~ Socket and wedge
375  DF  .~.~ Lock
376  DF  .~.~ Ratchet
377  DF  .~ Bolt anchors and sleeves
378  DF  .~ U-bolts and clips
379  DF  FOOT GUARDS
380  DF  .~ Switch point
381  DF  .~ Wheel-depressed
382  DF  DEADENING NOISE
******************************
DIGEST
******************************
DIG 1  DD  Track structure assembled by gluing