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Class Information
Number: 92/107
Name: Expansible chamber devices > Annular working member or annular linearly extending chamber therefor
Description: Apparatus comprising (1) a ring shaped working member provided with sealing portions along its inner and outer periphery for sealingly engaging the spaced walls of a chamber formed between a pair of fixed concentric members in which the ring shaped working member is slidably disposed or (2) a longitudinally extending chamber for receiving a ring shaped working member comprising a pair of relatively fixed concentric members said members being spaced from each other to provide a space therebetween.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6415900 |
Hydraulic control receiver with closing plate |
Jul. 9, 2002 |
| 6354188 |
Hydraulic actuator, in particular for engaging, a tube guide integral with an external body |
Mar. 12, 2002 |
| 6244409 |
Slave cylinder for a centered clutch release system |
Jun. 12, 2001 |
| 6193482 |
Structure of a piston of an air-filing device |
Feb. 27, 2001 |
| 6086339 |
Solar-powered reciprocating pump |
Jul. 11, 2000 |
| 6038959 |
Cylinder device for displacing workpiece |
Mar. 21, 2000 |
| 5974910 |
Accumulator piston |
Nov. 2, 1999 |
| 5964333 |
Friction clutch and a slave cylinder for the operation of a friction clutch |
Oct. 12, 1999 |
| 5957029 |
Linear thruster |
Sep. 28, 1999 |
| 5865442 |
Lip-like seal |
Feb. 2, 1999 |
| 5806648 |
Fluid pressure ram provided with a sliding intermediate chamber |
Sep. 15, 1998 |
| 5787791 |
Turbocharger actuator with rolling O-ring |
Aug. 4, 1998 |
| 5787790 |
Actuator with an overflow chamber and means for returning the fluid from the overflow chamber during a reverse stroke |
Aug. 4, 1998 |
| 5671652 |
Rotary actuator |
Sep. 30, 1997 |
| 5540053 |
Actuating unit for a hydraulic brake system for automotive vehicles |
Jul. 30, 1996 |
| 5492053 |
Bonded piston and seal assembly |
Feb. 20, 1996 |
| 5480017 |
Annular hydraulic clutch release cylinder device |
Jan. 2, 1996 |
| 5410946 |
Hydraulic actuator |
May. 2, 1995 |
| 5307915 |
Fluid-actuable releaser for a friction clutch |
May. 3, 1994 |
| 5297382 |
Intensifier cylinder |
Mar. 29, 1994 |
| 5249423 |
Master cylinder |
Oct. 5, 1993 |
| 5211099 |
Slave cylinder for a hydraulic actuating system of a motor vehicle friction clutch |
May. 18, 1993 |
| 5201178 |
Hydra-jack screw |
Apr. 13, 1993 |
| 5193433 |
Piston sealing and dampening device |
Mar. 16, 1993 |
| 5129311 |
Piston assembly with primary and co-centric secondary portions |
Jul. 14, 1992 |
| 5072651 |
Direct drive type rotation dividing table |
Dec. 17, 1991 |
| 5070766 |
Hydraulic valve actuator |
Dec. 10, 1991 |
| 5063828 |
Actuator with a lock mechanism |
Nov. 12, 1991 |
| 5062268 |
Fluid actuator |
Nov. 5, 1991 |
| 5058384 |
Digital actuator |
Oct. 22, 1991 |
| 5052277 |
Hydraulic cylinder for braking elements of vehicles |
Oct. 1, 1991 |
| 5044255 |
Brake regulator with second boost chamber |
Sep. 3, 1991 |
| 4993529 |
Concentrically mounted hydraulic clutch actuator |
Feb. 19, 1991 |
| 4984509 |
Multistage cylinder actuator |
Jan. 15, 1991 |
| 4970945 |
Actuating piston assembly, and seal therefor, for torque transmitting systems |
Nov. 20, 1990 |
| 4939983 |
Fluid pressure operated positioning apparatus |
Jul. 10, 1990 |
| 4920288 |
Piston engine with dynamic groove bearing internal to piston and isolated from compression space |
Apr. 24, 1990 |
| 4917002 |
Actuating piston assembly, and components thereof, for torque transmitting systems |
Apr. 17, 1990 |
| 4898077 |
Self-bleeding hydraulic pumping apparatus |
Feb. 6, 1990 |
| 4887515 |
Hydraulic cylinder apparatus |
Dec. 19, 1989 |
| 4867656 |
Free piston for use in an electromagnetic reciprocating compressor |
Sep. 19, 1989 |
| 4821627 |
Piston and cylinder assembly |
Apr. 18, 1989 |
| 4805744 |
Brake actuator assembly and method |
Feb. 21, 1989 |
| 4795016 |
Fluid actuator |
Jan. 3, 1989 |
| 4750408 |
Advancing device |
Jun. 14, 1988 |
| 4724745 |
Hydraulic servo drum for friction clutch |
Feb. 16, 1988 |
| 4678100 |
Variable flow rate dispensing valve assembly |
Jul. 7, 1987 |
| 4625837 |
Holding brake for manipulator |
Dec. 2, 1986 |
| 4620474 |
Drive mechanism for transmitting force and motion along a path |
Nov. 4, 1986 |
| 4601461 |
Lading protection device |
Jul. 22, 1986 |
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