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| Number | Title | Issue Date |
| 7152402 | Hydraulic vehicle seat adjustment control valve assembly A control valve, and a control module including such a control valve, for selectively controlling a flow of pressurised hydraulic fluid from a pump in a hydraulically powered vehicle seat adjustment system. The control valve including a duct for pressurised fluid de... | 12/26/2006 |
| 7013792 | Actuator provided with locking mechanism A piston rod is formed in a diameter smaller than an inner diameter of a hollow cylinder. The piston rod is inserted in the cylinder so as to be relatively movable in an axial direction of the cylinder. A locking mechanism comprises a first surface provided on the i... | 03/21/2006 |
| 6912947 | Supporting device The invention relates to a supporting device for supporting substrates in a component placement machine including a housing (1), a piston rod (5) arranged in the housing so as to be movable in its longitudinal direction in the housing (1) by pre... | 07/05/2005 |
| 6832539 | Cylinder lock A cylinder locking device for use in a clamp. The cylinder locking device includes a cylinder member and a first end cap on one end thereof and a second end cap on another end thereof. A piston is arranged within the cylinder member and a piston rod is engaged with ... | 12/21/2004 |
| 6663361 | Subsea chemical injection pump A chemical injection pump for injecting chemicals into subsea system at depths up to 10,000 feet is described which uses a minimum of moving parts by employing an actuator, for instance a solenoid, to power a double acting actuator rod and plungers thereo... | 12/16/2003 |
| 5836232 | Cylinder safety lock A safety, fluid-actuated cylinder-and-piston mechanism for use with an article which is movable between first and second positions. The mechanism comprises a conventional, fluid-actuated cylinder-and-piston mechanism and an automatic locking bar. The pist... | 11/17/1998 |
| 5081909 | Releasable latch mechanism for attaching an actuator to a valve An actuator comprising a housing having a chamber and a piston slidably received within the chamber. The housing is provided with an inlet port to the chamber for the introduction of an operating fluid to cause the piston to slide within the chamber. The ... | 01/21/1992 |
| 5081910 | Locking linear actuator A power cylinder assembly including means to positively lock the piston rod of the assembly in the forward extended position of the cylinder assembly. The locking means includes a pair of cam plates that are moved radially outwardly into locking engagemen... | 01/21/1992 |
| 5022499 | Axially slit pressure cylinder with brake means A piston rod-free pressure cylinder, in which a force reducer (15) is connected by means of a lateral projection (14) to the working piston (13), has a brake mechanism (19), which acts with a brake lining (27) on the outside of the pressure cylinder (11).... | 06/11/1991 |
| 4957193 | Actuating cylinder having mechanical advantage An actuating cylinder having a fluid pressure operated piston member connected by a friction member to a push rod to which a brake shoe, or the like, may be attached as the output member. A force transfer lever is arranged between the piston and push rod ... | 09/18/1990 |
| 4925154 | Gate valve with supplemental actuator An improved gate valve having a body with a chamber and an inlet and an outlet extending therethrough into said chamber, a gate mounted for reciprocation in said chamber between open and closed positions, a pressure responsive actuator having a housing, a... | 05/15/1990 |
| 4898080 | Fluid powered linear slide Disclosed is a fluid powered linear slide employing either a rodless or rod-type cylinder. The slide includes a base which has a movable carriage mounted thereon which moves reciprocably in response to pressurized fluid being fed to the cylinder. In the e... | 02/06/1990 |
| 4871143 | Gate valve with supplemental actuator An improved gate valve having a body with a chamber and an inlet and an outlet extending therethrough into said chamber, a gate mounted for reciprocation in said chamber between open and closed positions, a pressure responsive actuator having a housing, a... | 10/03/1989 |
| 4829880 | Fluid powered linear slide Disclosed is a fluid powered linear slide employing either a rodless or rod-type cylinder. The slide includes a base which has a movable carriage mounted thereon which moves reciprocably in response to pressurized fluid being fed to the cylinder. In the e... | 05/16/1989 |
| 4791856 | Single acting hydraulic actuator with variable return force A spring operated valve actuator with variable return force includes a compact spring mechanism with a short but very powerful closing characteristic. The energy provided by the spring mechanism is applied during the entire movement of the valve, with var... | 12/20/1988 |
| 4781105 | Spring brake cylinder A spring brake cylinder assembly having a spring-biased piston positioned therein. A pushrod is engaged with the piston through a clutch, which clutch includes both a clutch control device and a clutch operating mechanism that can manually release a brake... | 11/01/1988 |
| 4777867 | Releasable spring ring device for a spring-operated brake actuator A device for discontinuing and automatically restoring the operational function of a spring brake actuator. The device includes a piston with a piston rod and a spring for actuating the piston and piston rod in a working direction for brake application at... | 10/18/1988 |
| 4754694 | Fluid actuator with lock position indicating means A fluid actuator includes a lock mechanism for releasably locking the actuator against movement, and a lock release lever engageable by a lock piston upon application of system pressure thereto to release the lock mechanism. The lock mechanism includes an... | 07/05/1988 |
| 4491059 | Fluid actuator with manual lock release and lock position sensor Fluid actuator includes a lock mechanism for releasably locking the actuator against movement, and a lock release assembly including a lock piston engageable with a toggle linkage upon application of fluid pressure to the lock piston to release the lock m... | 01/01/1985 |
| 4458645 | Force actuated latching device and high pressure system A force operated latching device for use with a switch, valve or motor includes a sleeve-piston combination responsive to the force and which is latched and delatched in response to the force, usually in the form of fluid pressure. The latching device may... | 07/10/1984 |
| 4381047 | Piston anti-knock back assemblies A piston anti-knock back assembly in a disc brake assembly having a brake actuator comprising a piston slidably mounted within a cylinder bore and operable to urge a fricton surface into contact with a rotary disc surface upon supply of hydraulic fluid un... | 04/26/1983 |
| 4084515 | Locking mechanism for hopper door actuator assembly An automatic device for locking and unlocking a hopper door operating mechanism which prevents accidental opening of the hopper doors due to car oscillations and provides a protective lock while the car is in transit but which has a novel lock which is re... | 04/18/1978 |
| 4024800 | Actuating and bracing jack An actuating and bracing jack comprising a cylinder and a rod which are pivotably connected at their free ends to a fixed member and to a moveable member respectively. The cylinder has at least at one of its extremities, an internal resilient catch member... | 05/24/1977 |
