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| Number | Title | Issue Date |
| 7784391 | Arrangement for controlling a hydraulically driven motor The present invention relates to an arrangement for controlling a hydraulically driven motor, forming part of a hydraulic system in which hydraulic fluid under pressure forms a main flow through a main duct in which the motor is connected. The motor drives a varying... | 08/31/2010 |
| 7487706 | Device for controlling a hydraulically driven motor The present invention relates to an arrangement for controlling a hydraulically driven motor (2), forming part of a hydraulic system in which hydraulic fluid under pressure forms a main flow through a main duct (1) in which the motor is connected. The ... | 02/10/2009 |
| 7448309 | Hydraulic arrangement A hydraulic arrangement for implementing a float position is provided. The arrangement includes: a hydraulic cylinder having a first chamber and a second chamber, a first supply pipe connected to the first chamber and a second supply pipe connected to the second cha... | 11/11/2008 |
| 7415376 | Valve tester control enhancements A valve tester system is disclosed that comprises a valve tester assembly for rotating a valve stem of a valve. The valve tester assembly may include a support, a rotation element mounted on the support for rotating a valve during a rotation event, a control element... | 08/19/2008 |
| 7354511 | Hydraulic unit for industrial trucks A hydraulic unit for industrial trucks, comprising a motor pump unit which is directly attached to a tank, a reflux filter which has an elongate filter casing for a filtering element adapted to be introduced into the tank through an opening, a hose coupling, and an ... | 04/08/2008 |
| 7354118 | Control valve system A pneumatic brake system that includes at least one pneumatic latching valve; a single device, such as a solenoid, for providing momentary pilot signals to pneumatic latching valve; a source of pressurized supply air in communication with the pneumatic latching valv... | 04/08/2008 |
| 7305915 | Efficient pump/motor with reduced energy loss A bent axis pump/motor includes a back plate positioned within a casing, and a check valve positioned in the back-plate, the check valve configured to control passage of fluid from within the casing to an interior of the back plate. A yoke, coupled to the back plate... | 12/11/2007 |
| 7305914 | Hydraulic actuator control valve An actuator includes a piston within a cylinder, the cylinder having a first fluid port in communication with an open side of the piston, and a second fluid port in communication with a shaft side of the piston. The piston travels in a first direction, toward the sh... | 12/11/2007 |
| 7300118 | Electronic park brake valve system for air brakes vehicles A vehicle brake system includes a source of fluid pressure adapted to supply a braking force a brake actuator including a parking brake chamber, and a combination valve fluidly coupling the brake actuator to the source of pressure, the combination valve having an in... | 11/27/2007 |
| 7269099 | Air gun A seismic air gun includes an operating chamber, a firing chamber, a port, and a longitudinally disposed cavity sized and shaped to accept a plurality of wires. A moveable shuttle includes a shuttle flange within the operating chamber at one end and a firing shuttle... | 09/11/2007 |
| 7213500 | Pneumatic tool A pneumatic tool includes a shell defining first, second, third and fourth communicating spaces, a channel communicated with the second space, an inlet communicated with the channel, and an outlet communicated with the second space. A cylinder in the first space def... | 05/08/2007 |
| 7209344 | Computer controlled display device The present invention is a computer controlled display device. In one embodiment, the display device includes a flat panel display having an input for receiving display data. Additionally, a moveable assembly may be coupled to the display. The moveable assembly may ... | 04/24/2007 |
| 7172552 | Catheter introducer system for exploration of body cavities A self propelling catheter introducer system for exploring a body cavity is disclosed which includes a flexible tubular catheter, an everting tube and a steering section located near the distal end of the catheter that is introduced in a body cavity. The steering se... | 02/06/2007 |
| 7134378 | Continuously variable transmission In a continuously variable transmission with a toroidal variable speed drive, in which a roller is supported pivotably between two toroidal disks for transmitting motion between the two toroidal disks at transmission ratios which depend on the pivot position of the ... | 11/14/2006 |
| 7130721 | Electrohydraulic control system Consistent with an aspect of the disclosure, a method for controlling a hydraulic cylinder is provided. The hydraulic cylinder is provided with a chamber and configured to receive fluid from a valve. The method includes receiving a user input and determining a desir... | 10/31/2006 |
| 7073774 | Air intake adjusting assembly for pnuematic tools This invention discloses an air intake adjusting assembly for pneumatic tools, which rearranges the air intake adjusting assembly between the main body and the air intake section of a pneumatic tool, such that the air intake adjusting assembly will not be covered wh... | 07/11/2006 |
| 7066880 | Catheter introducer system for exploration of body cavities A catheter introducer system for endoscopy is disclosed which includes a steering section and a propulsion section located near the end of the catheter that is introduced in body cavity, and a non-collapsible sheath defining a working channel, disposed inside the ca... | 06/27/2006 |
| 6848353 | Hydraulic device A hydraulic device includes a passage block with a first hole, an internal body received in the first hole connected to a hydraulic module and an actuator. The actuator has a cylindrical shell integrally connected at its one side to the passage block and projecting ... | 02/01/2005 |
| 6742629 | Valve control unit for a hydraulic elevator A control valve unit for a hydraulic elevator includes two control valves wherein the flow of hydraulic oil from a tank to a lifting cylinder driving an elevator cabin and/or from the lifting cylinder to the tank can be controlled. In case of an upward movement of t... | 06/01/2004 |
| 6371005 | Hydraulic power unit for an elevator drive A vertically oriented hydraulic power unit for an elevator drive includes an outer tank for drive fluid and an inner tank for fluid used to submerge and cool a motor, the fluids being exchangeable to maintain temperature in the inner tank at or below a sp... | 04/16/2002 |
| 6354184 | Power machine with valve mount for valve assembly A power machine or a skid steer loader that is driven by an engine and has hydraulic pump, hydraulic fluid conduit, a hydraulic motor in fluid communication with a hydraulic fluid conduit and a valve that is operated or actuated by linear actuator such th... | 03/12/2002 |
| 6230607 | Adjusting device for a pneumatic drive, particularly for a medical or dental instrument An adjusting device for a pneumatic drive, particularly a pneumatic drive of a medical or dental instrument, for example, a handpiece or angle piece, which delivers its energy by vibration and in which the vibrations are produced by a pneumatic drive, whe... | 05/15/2001 |
| 6116144 | Pressure motor for electro-rheological fluids In a pressure motor for electro-rheological fluids comprising a housing (1) surrounding two operating chambers (A, B), a piston (3) moveable in the housing (1), an inlet channel (22) for supplying, and an outlet channel (23) for discharging an electro-rhe... | 09/12/2000 |
| 5562018 | Hydraulic valve A check valve (10) for a hydraulic actuator (14), wherein the check valve (10) includes a valve seat (72) and a displaceable valve component (62) for controlling the flow of hydraulic oil through valve seat (72). Check valve (10) also includes a cylindric... | 10/08/1996 |
| 5452745 | Magnetorheological valve and devices incorporating magnetorheological elements A valve used to control the flow of a magnetorheological fluid, in which the mechanical properties of the magnetorheological fluid are varied by applying a magnetic field, is described. The valve can comprise a magnetoconducting body with a magnetic core ... | 09/26/1995 |
| 5317952 | Tentacle-like manipulators with adjustable tension lines A tentacle-like manipulator has a resiliently longitudinally extensible, laterally bendable elongate member, e.g. an inflatable bellows or a helical compression spring-like member, with an end effector mounting on one end thereof. Tendon-like tension memb... | 06/07/1994 |
| 5315917 | Monoport airgun for seismic exploration having discharge port extending continuously for 360 degree around its axis A monoport airgun for seismic exploration has a single discharge port extending continuously for 360° around its longitudinal axis. This airgun has a first housing providing a firing chamber containing pressurized gaseous fluid (gas) and a second housing... | 05/31/1994 |
| 5191826 | Hydraulic control device In the case of a hydraulic control device for an oscillating load moving system comprising a double-acting hydroconsumer (V), which is adapted to be selectively connected to a pressure source (P) or to a reservoir (T) via two separate main lines (9, 10) a... | 03/09/1993 |
| 5181452 | Bellows actuator A bellows actuator has at least one bellows chamber comprising at least three chamber segments arranged around an axis. Each of the chamber segments forms a radially outwardly extending protrusion comprising four chamber wall portions, which merge with on... | 01/26/1993 |
| 5161450 | Air motor with warm air introduction means to prevent freezing A device to prevent freezng of a reciprocating air motor which drives a reciprocating plunger pump for liquid pressurized transport in which a passage exclusively for exhaust which is connected to an exhaust passage and a exhaust pipe which is connected t... | 11/10/1992 |
| 5125324 | Portable hydraulically operated device incorporating automatic drain valve A hydraulically operated device including a single-acting cylinder having a piston for operating a working tool, a pressure chamber for applying a hydraulic pressure to the piston from an original position to an operated position, and a return spring for ... | 06/30/1992 |
| 4955195 | Fluid control circuit and method of operating pressure responsive equipment A fluid control circuit and method of operating equipment such as a blowout preventer having a two-way hydraulic piston and cylinder assembly. The circuit includes various features such as a dual pressure level independently controlled fluid supply, a ded... | 09/11/1990 |
| 4930401 | Valve system and arrangement for on-line valve replacement Several embodiments are disclosed of an automatic shutoff valve apparatus for permitting removal, repair, or replacement of a control valve from a mounting base without deactivating a complete system. In addition, a redundancy arrangement is disclosed whe... | 06/05/1990 |
| 4750408 | Advancing device The invention relates to an advancing or feed for moving a workpiece on a machine tool. The device comprises a stationarily arranged fluid power cylinder whose piston rod extending through one of the end caps of the cylinder is connected with a load drivi... | 06/14/1988 |
| 4620474 | Drive mechanism for transmitting force and motion along a path A drive mechanism with a fluid-operable system can be adapted to a general path configuration. The mechanism includes coaxial tubes following a desired path configuration with the inner tube longitudinally slotted in a sealable manner. A fluid-actuated an... | 11/04/1986 |
| 4509407 | Hydraulic control valve with maintenance-facilitating feature The control valve for an hydraulic actuator is provided with a particular operating state for venting the hydraulic system, which state is attainable positively whenever the hydraulic pressure is inadequate, e.g., in the case of venting or presence of air... | 04/09/1985 |
| 4352271 | Steam feeding apparatus for a multicylinder steam engine In a multicylinder steam engine, separate steam feed conduits between a steam distributor and steam inlet valves of the cylinders and a large volume steam chamber adjacent to an inlet of the inlet valves respectively to suppress a pressure pulsation in th... | 10/05/1982 |
| 4348945 | Device for controlling a hydraulic power circuit The control device is applicable as a hydraulic regulating valve for controlling a power lift unit of a tractor and comprises a mechanically actuated preliminary selector valve operable for reciprocal movement to close or open pressure fluid supply into a... | 09/14/1982 |
| 4261249 | Hammer A fluid operable hammer including variable volume exhaust chamber means for receiving motive fluid and improved motive fluid inlet and exhaust valve means cooperable with the exhaust chamber means.... | 04/14/1981 |
| 4232584 | Control element for auxiliary power steerings The invention provides a control valve having a valve piston and coacting valve sleeve for flow control in booster power steering systems of the kind having a servo steering pump and a metering pump, especially as used in motor vehicles having power steer... | 11/11/1980 |
