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| Number | Title | Issue Date |
| 7395906 | Brake actuator A brake actuator including a chamber in which is provided a movable pressure responsive element which divides the chamber into first and second compartments, the brake actuator also including a valve assembly with an inlet which is connected to a source of pressuris... | 07/08/2008 |
| 7377406 | Two stage grease gun A portable grease gun with a dual pressure output capability which can be selectively changed by the user with little effort. The larger diameter plunger is slidable within a plunger retainer. The larger diameter plunger has a bore through them in which a smaller di... | 05/27/2008 |
| 7337927 | Two stage grease gun A portable grease gun with a dual pressure output capability which can be selectively changed by the user with little effort. A larger diameter plunger is longitudinally coupled to an extension. The larger diameter plunger and its extension are variable in length by... | 03/04/2008 |
| 7260971 | Apparatus for locking a sheet of metal suitable to be shaped in a press An apparatus for locking a sheet of metal to be shaped in a press, comprising at least one fluid-operated actuator for translational motion of a first sheet presser, adapted to support, in an initial operation step a sheet of metal to be shaped, arranged above a fir... | 08/28/2007 |
| 7221736 | Expansion device for fluid coolant/insulation in a x-ray apparatus In an expansion device for an x-ray apparatus, in particular with a rotary piston x-ray tube with a sealed coolant and/or insulation volume under a minimum pressure and pressing with this minimum pressure against an elastic pressure element, an elastic pressure elem... | 05/22/2007 |
| 7216580 | Multistage stroke cylinder apparatus A multistage stroke cylinder apparatus includes a main cylinder having a main piston and a main rod, an intermediate stop position setting mechanism for setting an intermediate stop position of the main piston, and a return position setting mechanism for setting a r... | 05/15/2007 |
| 7175001 | Apparatus for driving raising and lowering of lift for tower type storehouse There is provided an apparatus for driving the raising and lowering of a lift for a tower type storehouse so as to supply a force for vertically operating the lift carrying goods to storerooms on every floor of the storehouse, and more particularly to an apparatus f... | 02/13/2007 |
| 6962103 | Multi-stroke cylinder A multi-stroke air cylinder providing a precisely directed and controlled stroke in the face of lateral, torsional and tilting loads on a tooling plate. The multi-stroke cylinder utilizes a plurality of mechanically linked pneumatic or hydraulic pistons having diffe... | 11/08/2005 |
| 6935219 | Accumulation conveyor There is provided an apparatus that is composed of a first plurality of zones. The zones are capable of being separately driven in order to accumulate or transport cartons. A sensor is disposed within each zone for sensing the presence of a carton within the zone, a... | 08/30/2005 |
| 6915731 | Cylinder piston drive A cylinder-piston drive, e.g., an hydraulically controlled actuator for actuating a gas-exchange valve of an internal combustion engine, has an operating piston that is displaceable inside a cylinder and delimits pressure chambers by piston sides facing away from on... | 07/12/2005 |
| 6907818 | System and method for providing dry filtered air to a brake actuator A spring brake actuator that utilizes a valve for providing compressed air to a spring cavity, the air having previously been dried and filtered so as to prevent contaminates and moisture from corroding and/or damaging the spring in the spring cavity, the valve bein... | 06/21/2005 |
| 6895854 | Power cylinder apparatus for supplying varying actuation forces The present invention relates to a power cylinder apparatus for varying actuation forces applied to a workpiece. The present invention provides an enclosure having a piston rod connectable to a workpiece and slidably disposed within an enclosure. The piston rod move... | 05/24/2005 |
| 6807895 | 3-position stopping cylinder A pusher which has a stroke shorter than that of a piston at either position on a head side or a rod side in a cylinder main body and which serves as both means for pushing the piston from a stroke end back to an intermediate stopping position and means for stopping... | 10/26/2004 |
| 6685444 | Fluid discharging device with a reciprocating pump member defining an outlet valve, and a valve member defining an outlet and suction valve A fluid discharging device is provided with diaphragm members 20 and 30. The diaphragm member 30 being a valve member comprises an outlet 35 and a suction passage opening and closing portion 33, and can be moved forward and backward relative to the diaphr... | 02/03/2004 |
| 6651546 | Multi-stroke cylinder A multi-stroke air cylinder providing a precisely directed and controlled stroke in the face of lateral, torsional and tilting loads on a tooling plate. The multi-stroke cylinder utilizes a plurality of mechanically linked pneumatic or hydraulic pistons h... | 11/25/2003 |
| 6474215 | Actuator with approach pre-stroke and working stroke for operating a tool The invention concerns an actuator (21) comprising a pre-stroke rod (29) which can be fixed to the tool body, for example soldering pliers. Thus by pressurising the pre-stroke chamber (27) the working rod (34) for closing the pliers can be brought into an... | 11/05/2002 |
| 6386508 | Actuator having dual piston surfaces A pressurized-fluid-operated actuator has two piston surfaces for providing increased output force. The actuator includes a hollow piston that is divided into two inner chambers by a stationary inner dividing wall that is rigidly connected with a cylinder... | 05/14/2002 |
| 6368046 | Modulation of ejector pumps to provide uniform and controllable ejector speed during ejector stroke for articulated trucks and the like having ejector type dump mechanism A material eject system includes an ejector mounted to a bed of a vehicle which is movable between a rear end and a forward end of the bed for ejecting material from the bed. The ejector is powered by a cylinder having different fluid volumes depending on... | 04/09/2002 |
| 6318240 | Brake actuator An improved brake actuator, particularly an improved sealed service chamber, having a flexible tubular seal affixed at one end in the central pushrod opening in sealed relation and surrounding the pushrod in sealed relation in the service chamber housing.... | 11/20/2001 |
| 6314862 | Combination cylinder and pistons A combination cylinder and pistons wherein the pistons are provided with piston rods coaxially located in the cylinder so that fluid under pressure may be introduced into the head of one of the pistons at one end of the cylinder and transmitted through a ... | 11/13/2001 |
| 6314861 | High output spring brake actuator Disclosed is a diaphragm-based spring brake actuator assembly which allows for the delivery of more force to the push rod without increasing the size of the actuator unit. The invention allows for the use of a stronger heavy main compression spring in the... | 11/13/2001 |
| 6244562 | Multistage switching valve, two-stage switching valve, and toggle type two-stage switching valve A multistage switching valve includes a valve stem which is adapted to open or close a fluid passage, a biasing biasing means for biasing the valve stem in a direction to close the fluid passage, a plurality of pistons which are relatively slidably fitted... | 06/12/2001 |
| 6227223 | Valve and actuator in combination The present invention provides an interchangeable modular valve-actuator combination whereby the valve stem on the valve and the actuators are configured to be interchangeably engageable. The components of the valve-actuator are sized accordingly so that ... | 05/08/2001 |
| 6164182 | Actuating device for automation of a manual transmission of vehicles, especially motor vehicles An actuating device for automation of a manual transmission of a vehicle has a housing in which a first main piston and a second main piston are slidably supported. A control lever, fixedly connected to the actuator shaft of the manual transmission, is pr... | 12/26/2000 |
| 6131476 | Gear ratio selecting and shifting apparatus in a transmission The selecting actuator 16 is an operating member being capable of shifting a selecting lever by way of a neutral position. The shifting actuator 15 is an operating member being capable of shifting a shifting fork by way of the selecting lever 30. A flow c... | 10/17/2000 |
| 6041690 | Pneumatic control unit for at least partial opening of a movable body part of a motor vehicle A pneumatic drive unit is provided for partially opening a vehicle body part such as a trunk lid. The pneumatic drive unit includes a working chamber which in use applies pressure to move a control member which engages a contact surface of the vehicle bod... | 03/28/2000 |
| 6019026 | Self-centering motor A self-centering motor (16) includes a piston (130) which is disposed in a housing (112) and is movable in opposite directions from a centered condition. A pair of centering members (160 and 162) are disposed in the housing (112) to effect movement betwee... | 02/01/2000 |
| 5941158 | Fluid pressure actuator and actuator system A fluid pressure-operated actuator comprises a cylinder body containing a piston slidable therein, the piston defining respective chambers at opposite sides thereof. A rod projects from one side of the piston and extends through an end wall of the cylinde... | 08/24/1999 |
| 5924672 | Valve and actuator in combination A valve and actuator in combination with a transportation tank to operate off of low pneumatic pressures including a valve having a valve body with a tank end, a valve seat near the tank end of the valve body, the valve seat having a valve sealing surface... | 07/20/1999 |
| 5890364 | Master cylinder having a single service piston with compensation and damping sections An improved compensation piston arrangement for use with a dual circuit master cylinder having a single service piston for simultaneously pressurizing a first fluid chamber and a second fluid chamber, wherein the compensation piston arrangement provides f... | 04/06/1999 |
| 5816131 | Fluid-controlled actuator assembly A fluid-controlled actuator assembly for a gearbox of a vehicle. The actuator is provided with a four-position mobile element, with a first and a second chamber separated in a sealed manner from the mobile element, and with auxiliary positioning elements ... | 10/06/1998 |
| 5704462 | Cylinder for hydraulically operated clutches and brakes and hydraulically operated clutch assemblies for motor vehicles A cylinder for hydraulic systems, in particular for motor vehicles, includes a housing with an axial boring, in which a piston fastened to a piston rod is displaced axially in a guided manner, and one end surface of which is pressurized with hydraulic flu... | 01/06/1998 |
| 5682806 | Pressure medium pliers Pressure medium pliers for clamping rings, comprising a pressure medium connection and a pressure medium valve connected thereto, at least one piston controlled by the pressure medium valve, a traverse member drivable by the piston and pivoted pliers memb... | 11/04/1997 |
| 5673897 | Valve/actuator combination A valve/actuator combination to operate off of low pneumatic pressures for use on tanker railcars including a valve having a valve body with a tank end, a valve seat near the tank end of the valve body, the valve seat having a valve sealing surface; a ste... | 10/07/1997 |
| 5586482 | Two-stage fluidic actuator A fluidic actuator includes dual-element, differential area pistons consisting of a power piston and an extender piston that are mounted in a double-chamber cylinder. A spring-loaded throttling plunger is slidingly mounted in a longitudinal bore in the po... | 12/24/1996 |
| 5570769 | Linear and rotary actuator combination A rotary actuator and a linear actuator are combined to provide an output shaft with independent linear and rotary motion. The linear actuator causes the rotary actuator to move linearly, and there is a guide which restricts the movement of the rotary act... | 11/05/1996 |
| 5494078 | Pneumatic lift device for dual flow valve Positive adjustable flow is provided for a dual flow valve for paint dispensing or the like utilizing a sliding piston and a lost motion device in combination with an adjustable stop and wherein operating lift is provided by a single pressure source alter... | 02/27/1996 |
| 5483796 | Fluid cylinder A second pressure intensifying cylinder subchamber is employed for moving a pressure intensifying piston toward the other side, and the necessity for a control valve with a throttle is thereby eliminated. The pressure intensifying piston is incorporated i... | 01/16/1996 |
| 5404983 | Turn-act multiaction device A multi directional actuator capable of moving a shaft in at least two directions independently including one linear and one rotary movement. A base plate is provided to receive a first actuator having a linearly moving shaft which is extended from and re... | 04/11/1995 |
| 5297382 | Intensifier cylinder An intensifier cylinder including a body structure defining a first bore, a first piston structure including a piston mounted in the first bore and a piston rod secured to the piston and extending at its forward end through an end wall of the body structu... | 03/29/1994 |
