US Patent Class 91
MOTORS: EXPANSIBLE CHAMBER TYPE




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  WITH SIGNAL, INDICATOR OR INSPECTION MEANS
2  DF  CUTOFF OR CONTROL AFTER PREDETERMINED NUMBER OF CYCLES OR REVOLUTIONS
3  DF  JET CONTROL TYPE
4 R  DF  HYDRO-PNEUMATIC
4 A  DF  .~ With float mechanism
5  DF  WORKING MEMBER MOVED BY STORED MOTIVE FLUID CHARGE
6  DF  FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER
6.5  DF  .~ Three or more cylinders arranged in parallel, radial or conical relationship with rotary transmission axis
7  DF  .~ Selective cyclic and noncyclic operation or parking
8  DF  .~ Semi-compound type
9  DF  .~.~ Changeable by shiftable distributor
10  DF  .~.~ With condition responsive change-over valve
11  DF  .~ Changeable from multiple expansion to simple operation
12  DF  .~ Cyclically operable motor with port reversing
13  DF  .~.~ By shifting distributor seat
14  DF  .~.~ By shifting distributor
15  DF  .~.~ Selector valve between distributor and motor
16  DF  .~ Drifting or coasting on lower pressure
17  DF  .~.~ With speed responsive cutoff of drifting fluid
18  DF  .~.~ Pressure control of drifting fluid
19  DF  .~ Diverse paths used to control extent of working member travel
20  DF  .~ Position responsive
21  DF  .~.~ Rotating working member or chamber
22  DF  .~.~ Preliminary inlet to contracting chamber (e.g., cushioning)
23  DF  .~.~.~ By bypassing from expanding chamber (399)
24  DF  .~.~ Additional inlet path opened in response to position
25  DF  .~.~.~ Working member or part carried thereby uncovers inlet port
26  DF  .~.~.~.~ First path has check valve or selectively adjustable throttle
27  DF  .~.~ Plural simultaneous paths, one cutoff in response to position
28  DF  .~ Second path activated in response to pressure or flow in first path
29  DF  .~.~ By pressure rise in first path
30  DF  .~ Serially arranged reversing valves
31  DF  .~ One path includes restriction
32  DF  .~ Activation of one path disables second path
33  DF  .~.~ Pressure operated
34  DF  SINGLE ACTING, CHANGEABLE TO OR FROM DOUBLE ACTING
35  DF  INDEPENDENTLY OPERATED TIMER, DELAY, PATTERN OR CYCLIC CONTROL
36  DF  .~ Of independently movable working members
37  DF  .~ Pattern or template control
38  DF  .~ Fluid actuated valve with volume chamber delay means
39  DF  .~ Independent distributor actuation for cyclic control
40  DF  .~.~ Fluid actuated distributor motor
41  DF  WITH CORRELATED CONTROL OF MOTIVE FLUID AND LOCKING MEANS
42  DF  .~ By electrical control means
43  DF  .~ Working member position control of motive fluid and locking means
44  DF  .~ Sequential operation of locking means and motive fluid control
45  DF  .~ Common or interconnected valve means control motive fluid and fluid for locking means
46  DF  WITH INTERRELATED CONTROL OF MOTIVE FLUID AND LUBRICANT
47  DF  CONSTANTLY APPLIED MOTIVE FLUID WITH CONTROLLED VENTING
48  DF  .~ Plural separately controlled vents
49  DF  .~ Fluid vented through working member
50  DF  .~ Cyclically operable
51  DF  .~ Motive fluid constantly applied to and vented from opposed chambers
52  DF  CONSTANTLY OPEN THROTTLED EXHAUST WITH CONTROLLED MOTIVE FLUID SUPPLY
53  DF  ENGINE ROTATING OR STARTING TYPE
54  DF  CONVERTIBLE; OR CHANGEABLE BY DISASSEMBLY OR ASSEMBLY
55  DF  COMBINED
59  DF  TORQUE RESPONSIVE MOTIVE FLUID CONTROL
61  DF  ROTARY AND RECIPROCATING WORKING MEMBERS
151  DF  SERIALLY FORMED EXPANDING WORKING CHAMBERS (E.G., ENDLESS)
152  DF  MULTIPLE EXPANSION
153  DF  .~ Duplex
154  DF  .~.~ Cut-off or reversing
155  DF  .~ With fluid actuated distributor
156  DF  .~ Concentric working chambers
157  DF  .~ Relative valving adjustment between high and low pressure working chambers
158  DF  .~.~ Adjustment for valving for plural chambers
159  DF  .~ Expansion between relatively movable working members
160  DF  .~.~ Double acting high and low pressure working members
161  DF  .~.~ Fluid acts on each working member in single direction
162  DF  .~.~.~ High and low pressure faces on each working member
163  DF  .~ Fluid expanded through working member
164  DF  .~ Dual, rigidly connected high and low pressure faces
165  DF  APPLICATION OF MOTIVE FLUID AT DIFFERENT PRESSURES TO OPPOSED WORKING MEMBER FACES
166  DF  .~ Double acting motor reversed by pressure variation of motive fluid
167 R  DF  EXTENSION OF UNIT HAVING SEPARATELY CONTROLLED WORKING CHAMBERS EQUALS SUM OF INDIVIDUAL CHAMBER EXTENSIONS
168  DF  .~ Control of motive fluid for one working member in response to position of second
167 A  DF  .~ Vane
472  DF  THREE OR MORE CYLINDERS ARRANGED IN PARALLEL RADIAL OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS
473  DF  .~ Condition responsive control of drive transmission
474  DF  .~ Separate fluid supply or discharge paths
475  DF  .~ Having yieldable drive transmission
476  DF  .~ Separate motive fluid control for each working chamber
477  DF  .~.~ Each piston acts as valve for different working chamber
478  DF  .~.~ Means varies cyclic relation between reciprocating member and control valve therefor
479  DF  .~.~ Control by moving cylinder or liner
480  DF  .~.~ Mechanically actuated valves
481  DF  .~.~.~ Radial cylinders
482  DF  .~ Means varies cyclic relation between reciprocating member and control valve therefor
483  DF  .~.~ By adjustment of transmission or reaction element
484  DF  .~ Control valve seating surface contact maintained by fluid pressure bias
485  DF  .~.~ Disc valve
486  DF  .~ Motive fluid bypass to or from assembly
487  DF  .~.~ Separate passage directs motive fluid to or from valve interface
488  DF  .~.~ Fluid conducting passage disposed within piston
489  DF  .~.~ Valved
490  DF  .~ Motive fluid supply or discharge through piston
491  DF  .~ Radially disposed cylinders
492  DF  .~.~ Plural banks
493  DF  .~.~ Rigidly connected pistons reciprocate within rigidly connected cylinders
494  DF  .~.~ Cylinders and pistons form or coact with respective common elements having limited relative rotary movement
495  DF  .~.~.~ Cylinders or pistons pinned to common element
496  DF  .~.~ Positive bidirectional drive or reciprocating members
497  DF  .~.~ Stroke control
498  DF  .~.~ Cooperating valve ports in cylinder and relatively movable central member
499  DF  .~ Cylinders parallel to rotation axis
500  DF  .~.~ Plural angularly disposed cylinder banks
501  DF  .~.~ Cylinders contain plural oppositely movable pistons
502  DF  .~.~ Including plural axially spaced working chambers (e.g., double-acting working members)
503  DF  .~.~ Rotary spool valve
504  DF  .~.~ Stroke control
505  DF  .~.~.~ By varying reaction plate inclination relative to cylinder axes
506  DF  .~.~.~.~ Motor operated
507  DF  .~.~ Positive bidirectional drive of reciprocating members
169  DF  SINGLE CHAMBER FORMED BY MUTUALLY RELATIVELY MOVABLE CYLINDER, SLEEVE AND PISTON
170 R  DF  RELATIVELY MOVABLE WORKING MEMBERS WITH ONE HAVING MOTIVE FLUID CONTROLLED BY, MOVABLY INTERCONNECTED WITH OR MOVED BY ANOTHER
171  DF  .~ Synchronizing in response to sensed difference in positions
172  DF  .~ One working member oppositely biased by another
173  DF  .~ One working member forms movable chamber for another
174  DF  .~ With connection to relatively movable output member disposed between spaced unitary end faces
176  DF  .~ Moving cylinders
177  DF  .~ Oscillating working members
178  DF  .~ Single valve unit controlling plural working chambers
179  DF  .~.~ Oscillating valve
180  DF  .~.~ Rotary valve
181  DF  .~ Interconnected working members in communicating chamber portions
182  DF  .~ Means connecting working members actuates common part controlling motive fluid for the members
183  DF  .~ With means interconnecting working members to cause relative motion
184  DF  .~.~ Working member covers port to control motive fluid
185  DF  .~.~ Motive fluid control by pitman swing or intermittent contact with working member
186  DF  .~.~ Connection includes toothed gearing or rocking lever
187  DF  .~.~ Means varies cyclic relation between working member and control valve therefor
188  DF  .~.~ Motive fluid control actuator includes cam or crank rigid with means connecting working members
189 R  DF  .~ Position of one working member controls motive fluid for another
190  DF  .~.~ Changeable to plural self-controlled working members
191  DF  .~.~ Each cyclically controls another (e.g., duplex)
192  DF  .~.~.~ With three or more working members
193  DF  .~.~.~ Fluid operated valve controlled by relatively movable working member
194  DF  .~.~.~ Rotating output shaft type (e.g., locomotive or reversing means)
195  DF  .~.~.~ With self-control
189 A  DF  .~.~ Piston or rod directly valves passage
170 MP  DF  .~ Mine props
196  DF  MOVING CYLINDER
197  DF  .~ Plural rigidly connected rotary cylinders
206  DF  .~ With integral exterior working face
207  DF  .~.~ Both faces urged in single direction
208  DF  .~.~.~ Fluid to exterior face controlled by motive fluid pressure
209  DF  .~.~.~ Fluid to exterior face controlled by cylinder position
210  DF  .~ Oscillating cylinder
211  DF  .~.~ Cooperating valve ports in cylinder and fixed member
212  DF  .~.~.~ Ported end bearing
213  DF  .~.~.~ Ported trunnion
214  DF  .~.~.~ Ported arcuate slide face on which cylinder moves
215  DF  .~.~ Cylinder carried valve operated by fixed actuator
216 R  DF  .~ Cylinder and piston have relative reciprocation on fixed axis
217  DF  .~.~ Reciprocating piston and cylinder
216 A  DF  .~.~ Moving cylinder having follow-up
216 B  DF  .~.~ Cyclical moving cylinder
218  DF  CYCLICALLY OPERABLE
219  DF  .~ With dwell
220  DF  .~ With condition responsive stop means
221  DF  .~.~ Speed
222  DF  .~ Distributor in piston (422)
223  DF  .~.~ Oscillating piston (e.g., vane)
224  DF  .~.~ Distributor establishes communication between opposite faces of piston
225  DF  .~.~ Piston traverses pilot port to control distributor motor motive fluid
226  DF  .~.~ Communication into piston through peripheral port
227  DF  .~.~.~ Port controlled by piston position
228  DF  .~.~ Piston carries separate inlet and exhaust valves
229  DF  .~.~ Distributor operated by abutment with cylinder head
230  DF  .~ Codirectional separately supplied working members
231  DF  .~.~ One working member supply is distributor controlled
232  DF  .~ Valveless distribution
233  DF  .~.~ Distribution by reciprocating working member moving about an axis
234  DF  .~.~ Working member formed to provide internal fluid flow passage
235  DF  .~ Working chamber receives controlled motive fluid supply from opposed chamber having constant supply (321) (417)
236  DF  .~ Multiple exhaust passages (e.g., compression control)
237  DF  .~.~ Exhaust valve has separate valve controlled second exhaust passage therein
238  DF  .~.~.~ Pressure controlled second passage
239  DF  .~.~ Distributor for inlet or first exhaust controls second exhaust passage
240  DF  .~.~ Fluid pressure actuated valve for second exhaust passage
241  DF  .~.~.~ Compression actuated discharge to motive fluid supply
242  DF  .~.~.~ Exhaust pressure controlled
243  DF  .~.~ Working member controlled exhaust port with valved second exhaust passage
244  DF  .~.~ Controlled by separate relatively movable valves
245  DF  .~ Clearance control
246  DF  .~ Correlated throttle valve and distributor
247  DF  .~ Timing control by relative adjustment of plural movable fluid control elements
248  DF  .~.~ Electrical adjustment
249  DF  .~.~ With relative adjustment of plural adjustable fluid control elements
250  DF  .~.~.~ Adjustable inlet and exhaust events
251  DF  .~.~.~.~ With adjustable release and compression events
252  DF  .~.~ Cut off adjustable relative to admission
253  DF  .~.~.~ Inlet controlled by relatively cyclically moved elements
254  DF  .~.~.~.~ Biased cut off with adjustable trip
255  DF  .~.~.~.~ Adjustable fluid control for fluid actuated cut off
256  DF  .~.~.~.~ Cut off adjustable relative to reciprocating admission element
257  DF  .~.~.~.~.~ Oscillating admission element
258  DF  .~.~.~.~.~ Arcuate adjustment of cut off
259  DF  .~.~.~.~.~ Cut off adjustable codirectional with admission element movement
260  DF  .~.~.~ Biased inlet valve with adjustable tripping means
261  DF  .~.~.~.~ Inlet valve movable about an axis
262  DF  .~.~.~ Adjustable cam or cam follower actuated inlet valve
263  DF  .~.~.~ Adjustable fluid control for fluid actuated inlet valve
264  DF  .~ Relatively movable serial distributors
265  DF  .~ Relatively movable inlet and exhaust valves
266  DF  .~.~ Oscillating working member
267  DF  .~.~ Lost motion drive from inlet to exhaust valve
268  DF  .~.~ Exhaust valve closed or held closed by inlet fluid (442)
269  DF  .~.~ Biased valve with trip
270  DF  .~.~ Inlet and exhaust valve movable about an axis
271  DF  .~.~ Reciprocating inlet and exhaust valves
272  DF  .~.~.~ Codirectional with working member movement
273  DF  .~.~.~.~ Axially seating valves
274  DF  .~ With independent throttle adjustment for one side of double-acting motor
275  DF  .~ Electrically or magnetically actuated or adjusted distributor (459)
276  DF  .~ Distributor forms traversed movable portion of working chamber wall (423)
277  DF  .~ Adjustable working member reversal position (e.g., stroke control)
278  DF  .~.~ Selective diverse supply or exhaust paths for distributor motor
279  DF  .~.~ Adjustable lost motion connection
280  DF  .~ Pulsator-actuated distributor (460)
281  DF  .~ Working member controlled motive fluid for distributor motor
282  DF  .~.~ Fluid supply through diverse paths to distributor motor chamber
283  DF  .~.~.~ Path controlled by independently operable means
284  DF  .~.~ Independent means to adjust distributor motor supply or exhaust passage
285  DF  .~.~.~ Separately adjusts one chamber of double-acting distributor motor
286  DF  .~.~ Distributor or distributor motor mechanically moved cyclically to control actuating fluid for distributor motor
287  DF  .~.~.~ Movement of relatively movable pilot mechanically moves distributor
288  DF  .~.~.~ Distributor motor mechanically moved about axis
289  DF  .~.~ Adjustable means to retard or lock distributor motor
290  DF  .~.~ Working member traverses pilot port in working chamber side wall
291  DF  .~.~.~ Port controls separate motor for intermediate pilot valve
292  DF  .~.~.~.~ Distributor controls passage from port
293  DF  .~.~.~ With passage from port controlled by pilot valve
294  DF  .~.~.~.~ Pilot valve operated by separately controlled fluid motor
295  DF  .~.~.~ Plural ports control relatively movable distributor motors
296  DF  .~.~.~ Constantly open exhaust from distributor working chamber
297  DF  .~.~.~ With passage for pilot fluid in working member
298  DF  .~.~.~.~ Working member passage supplies distributor motive fluid
299  DF  .~.~.~ With distributor reversal by fluid compressed by working member
300  DF  .~.~.~ With distributor reversal by constantly supplied motive fluid
301  DF  .~.~.~ With control of distributor motor supply or exhaust port by distributor working member
302  DF  .~.~.~ Pilot port relieved into working chamber having working member controlled exhaust port
303  DF  .~.~ Working member adapted to directly mechanically reverse distributor
304  DF  .~.~ Pilot valve controlled distributor motor (461)
305  DF  .~.~.~ Plural pilot valves
306  DF  .~.~.~.~ Independent
307  DF  .~.~.~ Pilot valve relieves constantly supplied distributor motor fluid
308  DF  .~.~.~ Fluid-operated pilot valve
309  DF  .~.~.~ With distributor motor reversal by constantly applied fluid pressure
310  DF  .~.~.~ Pilot valve moves about an axis
311  DF  .~.~.~ Pilot valve moves laterally relative to working member reciprocatory path
312  DF  .~.~.~ Distributor motor working member is valve seat for pilot valve
313  DF  .~.~.~ Pilot valve actuator extends into working chamber
314  DF  .~.~.~ Working member reverses pilot through part movable relative to both
315  DF  .~.~ Distributor moves about an axis
316  DF  .~.~ Distributor moves laterally relative to working member reciprocatory path
317  DF  .~.~ Working member compresses fluid to reverse distributor
318  DF  .~.~ Motive fluid build-up at end of working stroke reverses distributor
319  DF  .~.~ Working member traverses pilot passage to control distributor motor
320  DF  .~.~.~ Port in piston between opposed working faces
321  DF  .~ Motive fluid constantly applied to one working member face (235) (417)
322  DF  .~ With independently operable means to lock distributor
323  DF  .~ Relatively movable distributors for opposed working chambers
324  DF  .~.~ Distributor moves about an axis
325  DF  .~ Working member controlled inlet or exhaust port (e.g., semi-valveless)
326  DF  .~ Distributor moves transverse and parallel to same line
327  DF  .~ Distributor moves about axis parallel to working member reciprocatory path
328  DF  .~ Distributor peripherally engages (1) working chamber wall, or (2) cylinder between opposed working faces
329  DF  .~ Distributor located in cylinder between spaced working faces
330  DF  .~ With independently operable means to move or means to adjust movement of distributor
331  DF  .~.~ Means adjusts motion transmission from working member to distributor
332  DF  .~.~.~ Adjusting means comprises motor
333  DF  .~.~.~ Speed controlled
334  DF  .~.~.~ To reverse direction of rotation of interposed shaft
335  DF  .~ With throttle valve or distributor throttle adjustment
336  DF  .~.~ Speed controlled
337  DF  .~ With means independent of distributor reversing parts to cyclically hold distributor
338  DF  .~.~ Positive hold (e.g., tripped type)
339  DF  .~ Oscillating working member
340  DF  .~.~ Distributor reversed by rotated part
341 R  DF  .~ Distributor actuator extends into working chamber
342  DF  .~.~ Axially slidable through working face
343  DF  .~.~ Moves laterally relative to working member reciprocatory path
341 A  DF  .~.~ Valves in partition between tandem pistons
344  DF  .~ Biasing means moves distributor after predetermined travel (i.e., snap action)
345  DF  .~.~ Distributor moves about axis
346  DF  .~.~ Spring biased
347  DF  .~.~.~ Coil spring moves laterally relative to coil axis
348  DF  .~ Distributor actuator between space piston faces
349  DF  .~.~ Distributor moves about axis
350  DF  .~ Working member reverses distributor through part movable relative to both
351  DF  .~.~ Meshing rotary gear
352  DF  .~.~ Distributor moves about axis
353  DF  .~.~ Distributor moves laterally relative to working member reciprocatory path
354  DF  .~.~ Rotated part
355  DF  CUTOFF AFTER SINGLE COMPLETE CYCLE
356  DF  .~ Reversal responsive to motive fluid pressure change
357  DF  SELECTIVELY USABLE OR POSITIONABLE WORKING MEMBER CONTROLLED VENT IN CHAMBER WALL (402)
358 R  DF  WORKING MEMBER POSITION FEEDBACK TO MOTIVE FLUID CONTROL
359  DF  .~ Regenerative or positive feedback type
360  DF  .~ With safety means operable upon input signal loss
361  DF  .~ Electrical input and feedback signal means (459)
362  DF  .~.~ Means provides incremental movements (e.g., stepper type)
363 R  DF  .~.~ Follower type
363 A  DF  .~.~.~ Fail safe control
364  DF  .~ With means to vary feedback signal in response to rate of working member movement
365  DF  .~ With main valve position feedback to pilot valve
366  DF  .~ Speed governor controlled input signal (458)
367  DF  .~ Plural input signal means for single motor valve (453)
368  DF  .~ Follower type
369.1  DF  .~.~ With relatively movable working and output members reacting on input member
369.2  DF  .~.~.~ Rubber block reaction means
369.3  DF  .~.~.~.~ And transverse valve key
369.4  DF  .~.~.~ Lever reaction means
370  DF  .~.~ With motor chamber pressure reaction on valve
371  DF  .~.~.~ With valve means limiting reaction pressure
372  DF  .~.~.~ Spring-loaded valve
373  DF  .~.~.~.~ With lost motion between input and reaction member
374  DF  .~.~ Plural movable valve parts
375 R  DF  .~.~.~ Valve part moves about an axis
375 A  DF  .~.~.~.~ Torsion bar
376 R  DF  .~.~.~ One movable part unitary with working member
377  DF  .~.~.~.~ Lost motion linkage connecting valve, load and working member
378  DF  .~.~.~.~ Axially movable spool-type valve
376 A  DF  .~.~.~.~ Vane
379  DF  .~.~ Disproportional rate of response
380  DF  .~.~ Screw and follower (e.g., nut)
381  DF  .~.~ Differential gearing
382  DF  .~.~ Cam and follower
383  DF  .~.~ Cable
384  DF  .~.~ Floating link
385  DF  .~ Bias-type input and feedback signal means
386  DF  .~.~ Feedback bias means adjustable
387  DF  .~.~ Spring-type feedback bias means
388  DF  .~ Fluid operated
389  DF  .~ Adjustable
358 A  DF  .~ Valve locking means
390  DF  POSITION MAINTAINING TYPE
391 R  DF  WITH ALTERNATIVE MANUAL ACTUATION OF LOAD
391 A  DF  .~ Alternate pedal positions
392  DF  WORKING MEMBER POSITION RESPONSIVE MOTIVE FLUID CONTROL
393  DF  .~ Position initiated timing or delay means
394  DF  .~ Working member carries part within working chamber which controls port in chamber end wall
395  DF  .~.~ Part movable with respect to working member
396  DF  .~.~ Part forms throttle member
397  DF  .~ Alternate control of inlet and exhaust for same chamber at opposite ends of stroke
398  DF  .~ Simultaneous control of inlet and exhaust of same chamber
399  DF  .~ Bypassing between expanding chamber and closed or throttled contracting chamber (e.g., cushioning) (23)
400  DF  .~ Venting expanding chamber
401  DF  .~.~ Through working member
402  DF  .~.~ Working member overrides exhaust port (357)
403  DF  .~ Position controls actuating fluid for valve
404  DF  .~ Exhaust control
405  DF  .~.~ Throttling (e.g., cushioning)
406  DF  .~.~.~ Exhaust valve with bleed passage therein
407  DF  .~.~.~ By successively controlling or controlling less than all of plural exhaust passages
408  DF  .~.~.~.~ Working member covers exhaust port (409)
409  DF  .~.~ Working member covers exhaust port in contracting chamber (408)
410  DF  .~ Working member controls relatively movable inlet valve
508  DF  PLURAL RELATIVELY MOVABLE OR RIGIDLY INTERCONNECTED WORKING MEMBERS
509  DF  .~ Having (1) stand-by or (2) redundant means enabling load to be driven upon failure of primary load moving means
510  DF  .~.~ Stand-by means utilizes an auxiliary motive fluid source for another working member to drive same load
511  DF  .~ Condition responsive means for modifying working member operation
512  DF  .~.~ Condition is that of a load driven by a working member other than working member having its operation modified
513  DF  .~.~ Condition is position of fluid control member of motor other than motor whose operation is modified
514  DF  .~.~ Pressure responsive valve divides motive fluid between motors
515  DF  .~.~.~ For synchronization of motors
516  DF  .~.~.~ To give one motor priority to motive fluid over another
517  DF  .~.~ Condition sensed is working member speed or working fluid pressure of another motor (i.e., fluid pressure or flow to or from expansible chamber of the other motor)
518  DF  .~.~ Motive fluid control valve responsive to pressure in supply line to or exhaust line from motor which it modifies
519  DF  .~ With means for selectively changing the speed or force exerted on load by the selective application of motive fluid in a single direction to one or more working members
520  DF  .~ Motors connected in series
521  DF  .~ Separate valve means actuatable by a common nonmanual actuator or separately actuatable means with common manual actuator
522  DF  .~.~ With means to independently actuate valve means
523  DF  .~.~ Simultaneously actuated separate valve means
524  DF  .~.~ Successive actuation of separate valve means
525  DF  .~ With means to control the working fluid to one working member for movement relative to another without controlling the working fluid to the other working member by said means
526  DF  .~.~ With multiway valve in series with control means
527  DF  .~.~ Valve controlled by remote means (e.g., radio, electromagnetic, etc.)
528  DF  .~.~ Control means is fluid pressure operated valve
529  DF  .~.~.~ Fluid pressure operated valve controlled by a pilot valve
530  DF  .~.~ Control means includes separate control valves for each working member
531  DF  .~.~.~ With additional control valve in series with at least one separate control valve in supply line to one of motors
532  DF  .~ With means for proportioning motive fluid supply to plural motors
533  DF  .~ Single valve for plural rigidly connected working members
534  DF  .~ Single valve for relatively movable working members driving common load
535  DF  .~ Relatively movable working members of unequal cross-sectional areas
536  DF  .~ Single valve for relatively movable working members
415  DF  DIFFERENTIAL
416  DF  .~ Opposing pressure applied by bypassing
417 R  DF  .~ Motive fluid constantly applied to one working member face (235) (321)
417 A  DF  .~.~ Staplers having two diameter pistons
418  DF  WITH MOTIVE FLUID VALVE
419  DF  .~ Responsive to (1) motive fluid temperature or state, or (2) motor position or orientation
420  DF  .~ Contracting chamber exhaust valve controlled by expanding chamber pressure or flow
421  DF  .~ Expanding chamber inlet controlled by contracting chamber pressure or flow
422  DF  .~ Valved piston (222)
423  DF  .~ Valve part forms traversed movable portion of working chamber wall (276)
424  DF  .~ Two hand control
425  DF  .~.~ With motor-controlled holding means for valve
426  DF  .~ With fluid pressure holding means for valve
427  DF  .~ Plural manual control stations
428  DF  .~ Manual control carried on or operated from load or output element
429  DF  .~ Dither valve
430  DF  .~ Valve parts continuously relatively moved for nonvalving function
431  DF  .~ Continuous motive fluid flow through chamber in motor idle condition
432  DF  .~ Inlet check valve with means for disconnectable supply line (468)
433  DF  .~ Both inlet and exhaust controlled by motive fluid pressure in supply line or chamber
434  DF  .~.~ With manual valve actuating means responsive to motive fluid pressure (e.g., "feel")
435  DF  .~ Controlled by rate of movement of working member
436  DF  .~ Inlet fluid supplemented by controlled fluid pressurized in opposed contracting chamber
437  DF  .~ Independent control of bypass between opposed working chambers
438  DF  .~.~ Held closed by motive fluid pressure
439  DF  .~.~.~ Bypass through supply line
440  DF  .~ For exhausting contracting working chamber to expanding opposed nonworking
441  DF  .~ With ambient fluid inlet valve to expanding working chamber
442  DF  .~ Self-opening exhaust valve held closed by inlet pressure (268)
443  DF  .~ To provide unequal inlet and exhaust flow rates to single working chamber
444  DF  .~ Relatively movable serial valves
445  DF  .~.~ Stop valve between working chamber and inlet and exhaust valve
446  DF  .~.~ Including motive fluid pressure or flow responsive valve (468)
447  DF  .~.~.~ Between working chamber and inlet and exhaust valve
448  DF  .~.~ In supply path
449  DF  .~ Plural separately controlled waste passages for single working chamber
450  DF  .~.~ One passage controlled by inlet and exhaust valve
451  DF  .~.~.~ Another passage controlled by motive fluid pressure or flow responsive valve (468)
452  DF  .~.~ One passage controlled by motive fluid pressure or flow-responsive valve (468)
453  DF  .~ Plural actuators for single valve means (367)
454  DF  .~ Relatively movable inlet and exhaust valves for single working chamber
455  DF  .~.~ One valve forms unitary part of valve controlling opposed working chamber
456  DF  .~.~ One valve moves about an axis
457  DF  .~.~ Single actuating means moves both valves
458  DF  .~ Speed governor operated (366)
459  DF  .~ Electrically operated (275) (361)
460  DF  .~ Pulsator actuator for valve (280)
461  DF  .~ Pilot valve (304)
462  DF  .~ For double-acting motor
463  DF  .~.~ With means to provide unequal flow rates to or from opposed working chambers
464  DF  .~.~ Means to simultaneously open working chambers to inlet or exhaust
465  DF  .~.~ Relatively movable unitary inlet and exhaust valves for opposed working chambers
466  DF  .~.~ Unitary inlet and exhaust valve means for opposed working chambers
467  DF  .~.~.~ Valve means moves about an axis
468  DF  .~ Self-acting valve (432) (446) (451) (452)
469  DF  .~ Unitary inlet and exhaust valve for single working chamber
470  DF  .~.~ Valve moves about an axis
471  DF  MISCELLANEOUS (E.G., METHODS)
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DIGESTS
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DIG 1  DD  Digital
DIG 2  DD  Exhaust throttled motor control
DIG 3  DD  Large area valve
DIG 4  DD  Magnets