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| Number | Title | Issue Date |
| 7603854 | Pneumatically self-regulating valve A pneumatic motor that includes a cylinder, a piston disposed in the cylinder, and a pneumatically-reset pilot valve. In certain embodiments, the pneumatically-reset pilot valve is configured to move to a first position in response to a change in pressure in the cyl... | 10/20/2009 |
| 7603855 | Valve with magnetic detents A motor including a piston disposed within a cylinder and a valve configured to control a flow of a fluid into the cylinder. In some embodiments, the valve has a housing, a valve member disposed in the housing, and a magnetic detent configured to resist movement of ... | 10/20/2009 |
| 7331405 | Powered hammer device The present invention relates to a powered hammer device including: a hammer with at least a first and a second projection; at least one translation dog adapted to engage with said projections, and a drive mechanism capable of moving the translation dog substantiall... | 02/19/2008 |
| 7315089 | Powertrain system comprising compressed air engine and method comprising same A powertrain system comprises a compressed air supply apparatus, a compressed air engine, a rotary power conversion apparatus and an electrical power conversion apparatus. The compressed air engine is configured for extracting energy from compressed air. The compres... | 01/01/2008 |
| 7296405 | Variable flow reducing valve and gradual control valve distribution system for a compressed air injection engine operating on mono or multi energy and other engines or compressors A variable flow reducing valve and distribution system is disclosed for compressed air injection engines operating on mono or dual energy with dual or triple supply mode and comprising a high pressure compressed air tank and a buffer capacity. The system can control... | 11/20/2007 |
| 7226273 | Method of generating compressed air, and compressor arrangement for implementing the method Method and compressor arrangement for generating compressed air, particularly for commercial vehicles, which is generated by way of a compressor unit (3) driven by an internal-combustion engine (1) from the ambient air according to a control unit (1... | 06/05/2007 |
| 7003838 | Hydraulic pig advance system comprising a control volume chamber containing hydraulic fluid and a force transmitting member This invention relates to a hydraulic pig advance system comprising a control volume chamber containing hydraulic fluid and a force transmitting member. The system further comprises two directional control valves which can be selectively repositioned to cause hydrau... | 02/28/2006 |
| 6989609 | Method and apparatus for supplying energy to sensors An apparatus for supplying energy to a sensor co-moved with a wheel of a vehicle, which contains a generator co-moved with the wheel of the vehicle, the generator generating electrical energy from vibrational motions of the vehicle. ... | 01/24/2006 |
| 6921315 | Toy vehicle having an integral pump assembly An integral pump assembly may be used to power a toy vehicle. The pump pressurizes fluid stored within the pressure vessel. The pressurized fluid within the pressure vessel drives the engine that powers the toy vehicle until the stored pressurized fluid has been dep... | 07/26/2005 |
| 6598392 | Compressed gas engine with pistons and cylinders A compressed gas engine includes a plurality of reciprocating pistons within cylinders, the pistons being driven by compressed gas from a source tank. Intake and exhaust valves selectively open to direct compressed gas to the piston to drive the piston, a... | 07/29/2003 |
| 6311486 | Method for operating a pollution-reducing engine A method for reducing pollution in a mono-mode air-air combustion engine having an intake and compression chamber, connected to a constant volume expansion chamber, which is connected in turn to an expansion and exhaust chamber. External air is drawn into... | 11/06/2001 |
| 6006517 | Pneumatic engine A fluid engine for use in pneumatically operated toys such as wheeled vehicles or airplanes includes an engine having a fluid input cavity which is in continuous fluid communication with a source of compressed air, a fluid delivery cavity which is in cont... | 12/28/1999 |
| 6003312 | Engine In accordance with this invention a vapor engine is provided having a first piston of a given diameter and a second piston having a larger diameter than the first piston. Walls are provided within which the pistons travel so as to define a first piston sp... | 12/21/1999 |
| 5953914 | Steam powered head device for producing a high RPM engine A productive, efficient and environmentally friendly Steam Powered Head Device for integral use with an engine which operates at high RPM. The inventive device includes a head block with integral cylindrical rotating valve through a longitudinal cylindric... | 09/21/1999 |
| 5649423 | Micromechanism linear actuator with capillary force sealing A class of micromachine linear actuators whose function is based on gas driven pistons in which capillary forces are used to seal the gas behind the piston. The capillary forces also increase the amount of force transmitted from the gas pressure to the pi... | 07/22/1997 |
| 5584179 | Pumping machine and generator system utilizing the same A pumping machine is disclosed which comprises valve means and air intakes, the valve means comprising a plurality of check valves and having a double-layer structure, the valve means being caused to vertically reciprocate by delivery of compressed air, t... | 12/17/1996 |
| 5546749 | Nail gun handle extension A handle extension for an air powered tool. The extension has been designed for use with a nail gun, but the mechanism is suitable for any air powered hand tool. The device includes a jointed, tubular extension that is affixed to the tool. The device furt... | 08/20/1996 |
| 5515675 | Apparatus to convert a four-stroke internal combustion engine to a two-stroke pneumatically powered engine An apparatus (10) to convert a four-stroke internal combustion engine to a two-stroke pneumatically powered engine. An air compressor (60) is driven using the rotation of the crankshaft (22) and compressed air is delivered through a supply line (74) to at... | 05/14/1996 |
| 5491977 | Engine using compressed air An engine (32) driven by compressed air, including an electric motor (36) driven by a battery (B), a compressor for generating the compressed air by use of a drive power of the electric motor (36), an intake manifold (40) connected with an outlet of the c... | 02/20/1996 |
| 5375417 | Method of and means for driving a pneumatic engine A pneumatic motor having a plurality of cylinders, with each cylinder having an expansion chamber (15), defined in part by a piston plate (2); and a diversion chamber (16) which is divided into two chambers by a slide plate (11), with the diversion chambe... | 12/27/1994 |
| 5337560 | Shock absorber and a hermetically sealed scroll gas expander for a vehicular gas compression and expansion power system Energy of shock force normally absorbed by shock absorber in an automotor vehicle is recovered and converted to electric power.... | 08/16/1994 |
| 5309713 | Compressed gas engine and method of operating same A compressed gas engine (20) has a piston (25) mounted for reciprocating movement within a cylinder (22). A valve (29) is slideably mounted on the cylinder head (31) to control the flow of compressed gas from a source (24) through an inlet (23) to a plenu... | 05/10/1994 |
| 5277099 | Reduced icing low friction air valve An external air valve for a reciprocating air motor is provided with a the ability to transfer heat from incoming compressed air into the valve cups to prevent icing and a low friction mechanism for the valve slide to enhance reliability. The design has a... | 01/11/1994 |
| 5265421 | Underwater hydraulic system for reducing liquidborne noise An hydraulic liquid system wherein a pump moves liquid from one location to another such as in supplying one or more loads in an underwater environment. The system includes two hydro-pneumatic chambers utilized such that one is filled by liquid from the p... | 11/30/1993 |
| 5261311 | Reciprocating hydraulic motor with a differential piston The invention relates to a reciprocating hydraulic motor having a differential piston interposed between an inlet pipe for fluid at a pressure P1 and an exhaust pipe for fluid at a pressure P2 which is less than the pressure P1 The moving assembly constit... | 11/16/1993 |
| 5222425 | Cyclic hydraulic actuator This invention relates to a cyclic hydraulic actuator, and more particularly to an actuator for a rock drill and includes: a housing; at least two chambers in the housing; a fluid passage between a first of the chambers and the outside of the housing for ... | 06/29/1993 |
| 5222833 | Shutter for hydro-pneumatic current flow harnessing system A gravitational window shutter in a water gate for a system for harnessing power from current flow or tidal movement in a of water is disclosed. The gate is formed with a door for closing the port through which the water may flow. The door has a window in... | 06/29/1993 |
| 5184535 | Speed control device for a pneumatic cylinder A speed control device for a pneumatic cylinder of the invention is characterized in that a speed control of the pneumatic cylinder can be changed from air pressure to air mass flow by a two-way valve and an airflow control valve. Therefore, an ordinary a... | 02/09/1993 |
| 5163292 | Simplified fluid pressure operated engine Controls for operating fluid pressure fueled reciprocating piston engines are simplified by passing fuel directly to a cylinder inlet port from a synchronously timed rotary distributor. This permits a snap acting diaphragm transfer valve normally opening ... | 11/17/1992 |
| 5074710 | Water gate array for current flow or tidal movement pneumatic harnessing system The invention, which provides a system for harnessing power from current flow or tidal movement in a body of water, comprises first and second hydro-pneumatic chambers each having ingress and egress below the water surface near the river or ocean floor an... | 12/24/1991 |
| 5044254 | Reciprocating air motor A vibration cancellation device is provided for an air motor with a reciprocating drive piston. The device consists of an anti-phase piston which is axially aligned with the drive piston and reciprocates in the opposite direction of the drive piston. In o... | 09/03/1991 |
| 5031402 | Pneumatic pump actuator for oil wells A wellhead mounted pneumatic actuator for bottom hole oil pumps designed for operation by compressed air or gas. The preferred embodiment utilizes a single action cylinder with the downstroke actuated by the weight of the sucker rods and the fluid contain... | 07/16/1991 |
| 4896505 | Pressurized-fluid-operated engine A pressurized-fluid-operated engine having a plurality of reciprocatable pistons carried within cylinders through connecting rods with an output shaft. The engine is adapted to operate on pressurized air or pressurized gases, without combustion, and it in... | 01/30/1990 |
| 4811562 | Adjusting drive A compact electric adjusting drive for locking systems, fan flaps or the like in motor vehicles includes a fluidic force transmission system between the electric motor and the adjusting element movable to and fro between two end positions.... | 03/14/1989 |
| 4787071 | Piezoelectric/fluid pressure transducer apparatus A flat, elongate, laminated plate of ceramic piezoelectric material is fixedly mounted on one end to permit movement of the other end responsive to the application of a variable electronic control signal to electrodes on the outer surfaces of the laminate... | 11/22/1988 |
| 4783961 | Natural gas pressure differential energy recovery system An energy recovery system is disclosed for recovering energy of highly pressurized natural gas when it is depressurized prior to distribution. The system includes a processing vessel which defines a bounded volume. The vessel is partially filled with wate... | 11/15/1988 |
| 4769988 | Compressed air generating system A compressed air power plant which includes a piston disposed within a cylinder and connected to a drive shaft. The piston is operated through a power stroke and an exhaust stroke upon each rotation of the drive shaft. The power plant includes compressed ... | 09/13/1988 |
| 4633742 | Pneumatic press controller and method A controller and method are provided for controlling pneumatic presses, and similar machines. The controller comprises a gauge to measure increments of stock length passing through the press, a length recorder to set the desired piece length, and a length... | 01/06/1987 |
| 4630972 | Impulse injector apparatus An impulse injector apparatus operates to produce pulsed delivery of injected material, with the material moving during a delivery pulse at high velocity and under the urging of a compressed captured gas supply which is permitted to rapidly expand. The de... | 12/23/1986 |
| 4614085 | Gas engine A piston of a gas engine is reciprocatingly guided in a cylinder. A gas inlet valve whose valve closure component consists of a ball is situated in the cylinder head. The ball is pushed open in the top dead-center position of the piston by a protrusion fo... | 09/30/1986 |
