US Patent Class 92
EXPANSIBLE CHAMBER DEVICES-- Main Headings



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Current as of: June, 1999
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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 {1}
6 R  DF  EFFECTIVE AREA OF WORKING MEMBER END FACE SELECTIVELY VARIABLE {1}
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 {3}
12.1  DF  DISPLACEMENT CONTROL OF PLURAL CYLINDERS ARRANGED IN PARALLEL, RADIAL, OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS {10}
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 {8}
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 {2}
34  DF  BELLOWS TYPE EXPANSIBLE CHAMBER {10}
48  DF  PLURAL FLEXIBLE WALL WORKING MEMBERS {2}
51  DF  MUTUALLY RELATIVELY MOVABLE CYLINDER OR SLEEVE, MEMBER SEALINGLY SLIDABLE THEREIN AND OUTER CYLINDER THEREFOR {2}
54  DF  ROTATING CYLINDER {2}
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 {8}
77  DF  GROUND EMBEDDED EXPANSIBLE CHAMBER
78  DF  WITH FLUID PURIFYING MEANS {1}
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 {2}
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) {1}
106  DF  FLUID CONDUIT IN CONSTANT COMMUNICATION WITH RELATIVELY ROTATABLE WORKING CHAMBER
107  DF  ANNULAR WORKING MEMBER OR ANNULAR LINEARLY EXTENDING CHAMBER THEREFOR {1}
109  DF  PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM {2}
116  DF  WITH AXIALLY EXTENDING ELEMENT MOUNTED ON WORKING MEMBER FOR RELATIVE ROTARY MOVEMENT ONLY
117 R  DF  MOVING CYLINDER {2}
120  DF  OSCILLATING WORKING MEMBER OR CYLINDER THEREFOR {1}
126  DF  WITH DIFFERENTIAL RADIAL THRUST PRODUCING MEANS FOR WORKING MEMBER {1}
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 {9}
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) {2}
153  DF  WITH LUBRICATING MEANS {5}
161  DF  WITH SUPPORT OR FRAME (146) {1}
162 R  DF  SPACED CYLINDER AND PISTON WALLS DEFINE PASSAGE BETWEEN OPPOSED PISTON SIDE WALL ENDS {1}
163  DF  FLUID CONDUIT OR PORT IN FIXED WALL OF WORKING CHAMBER {1}
165 R  DF  WITH GUIDE OR SEAL ON CYLINDER END PORTION FOR PISTON OR MEMBER MOVED BY PISTON {4}
169.1  DF  CYLINDER DETAIL {3}
172  DF  PISTON {19}
261  DF  MISCELLANEOUS (E.G., CRANKCASE)
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DIGESTS
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DIG 1  DF  Bearing on piston or cylinder
DIG 2  DF  Fluid bearing
DIG 3  DF  Flexible drive
DIG 4  DF  Lost motion