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Class Information
Number: 91/422
Name: Motors: expansible chamber type > With motive fluid valve > Valved piston (222)
Description: Apparatus in which the movable valve means is in or carried by a piston or piston rod of the motor.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7325710 |
Pneumatic nail gun |
Feb. 5, 2008 |
| 7240603 |
Valve |
Jul. 10, 2007 |
| 7237471 |
Continuously lockable adjustment device |
Jul. 3, 2007 |
| 7231865 |
Swiveling motor |
Jun. 19, 2007 |
| 7143684 |
Hydraulic actuator having disc valve assembly |
Dec. 5, 2006 |
| 7137586 |
Hydraulic spooler |
Nov. 21, 2006 |
| 7104180 |
Low noise linear actuator |
Sep. 12, 2006 |
| 7104058 |
Vehicle braking system |
Sep. 12, 2006 |
| 7080589 |
Hydraulic cylinder |
Jul. 25, 2006 |
| 6764286 |
Piston pump with pump inlet check valve |
Jul. 20, 2004 |
| 6746220 |
Pressure fluid-delivery device |
Jun. 8, 2004 |
| 6722866 |
Pump system for delivering cryogenic liquids |
Apr. 20, 2004 |
| 6679160 |
Dual air actuator for operating an air chuck |
Jan. 20, 2004 |
| 6666663 |
Gas suction apparatus for a reciprocating compressor with a piston inertia valve |
Dec. 23, 2003 |
| 6487955 |
Piston structure of tilt apparatus for marine propulsion device |
Dec. 3, 2002 |
| 6463841 |
Lift cylinder |
Oct. 15, 2002 |
| 6434931 |
Hydraulic brake master cylinder with controlled center port valve gap and method of assembly |
Aug. 20, 2002 |
| 6220142 |
Manually operated emergency control actuation device |
Apr. 24, 2001 |
| 6186043 |
Cushion hydraulic cylinder |
Feb. 13, 2001 |
| 6185937 |
Master cylinder with hydraulic reaction independent of viscosity |
Feb. 13, 2001 |
| 6176170 |
Hydraulic actuator with shock absorbing capability |
Jan. 23, 2001 |
| 6170383 |
Piston bypass valve |
Jan. 9, 2001 |
| 6161465 |
Pneumatic or hydraulic control motor with a shutoff device |
Dec. 19, 2000 |
| 6161466 |
Piston pump for a vehicle brake system |
Dec. 19, 2000 |
| 6102679 |
Air compressor |
Aug. 15, 2000 |
| 6085634 |
Power steering cylinder assembly |
Jul. 11, 2000 |
| 6050171 |
Hydraulic power steering gear assembly with unloading value |
Apr. 18, 2000 |
| 6041690 |
Pneumatic control unit for at least partial opening of a movable body part of a motor vehicle |
Mar. 28, 2000 |
| 5915679 |
Support element for securing a work piece on a supporting surface |
Jun. 29, 1999 |
| 5906150 |
Valves incorporated structure in a tension adjusting cylinder body for a crawler type vehicle |
May. 25, 1999 |
| 5873447 |
Hydraulic cylinder for grain augers |
Feb. 23, 1999 |
| 5802953 |
Power tilt cylinder device |
Sep. 8, 1998 |
| 5794509 |
Proportional pneumatic fin actuator system without feedback control |
Aug. 18, 1998 |
| 5784943 |
Arrangement in a hydraulic cylinder |
Jul. 28, 1998 |
| 5623861 |
Pneumatic cylinder and control valve therefor |
Apr. 29, 1997 |
| 5584225 |
Hydraulic cylinder, especially a trim and tip cylinder for outboard type boat propeller drive units |
Dec. 17, 1996 |
| 5531575 |
Hand pump apparatus having two pumping strokes |
Jul. 2, 1996 |
| 5481877 |
Double acting pulsator with valved piston |
Jan. 9, 1996 |
| 5473896 |
Piston with central valve for hydraulic brake systems |
Dec. 12, 1995 |
| 5425305 |
Hydraulic cylinder piston with center flow bypass valve |
Jun. 20, 1995 |
| 5392690 |
Marine power steering system |
Feb. 28, 1995 |
| 5325763 |
Internal check valve |
Jul. 5, 1994 |
| 5261316 |
Angular displacement motor with counterbalance chambers |
Nov. 16, 1993 |
| 5249502 |
Double action, dual speed and force hydraulic actuators |
Oct. 5, 1993 |
| 5241894 |
Marine power steering system |
Sep. 7, 1993 |
| 5237916 |
Regenerative hydraulic cylinders with internal flow paths |
Aug. 24, 1993 |
| 5233878 |
Closed loop control for transmission shift fork position |
Aug. 10, 1993 |
| 5203251 |
Motor with spring elements formed on valve assembly |
Apr. 20, 1993 |
| 5159871 |
Cylinder-piston unit having central valve, in particular for vehicle brake systems |
Nov. 3, 1992 |
| 5151015 |
Compression device, particularly for the pressure filling of a container |
Sep. 29, 1992 |
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