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Match Document Document Title
8464525 Subsea power fluid recovery systems  
Systems and methods for recovering power fluid used to power a device under water and for pumping the recovered power fluid to a fluid container above a surface of the water, the method in certain...
8132497 Hydraulic machine, in particular hydraulic motor, and metering device comprising such a motor  
A hydraulic machine includes a casing with a body and a cover; a separation member which can make a reciprocating movement and defines two chambers; hydraulic switching elements including a...
7975597 Hydraulic machine, in particular hydraulic motor, with a reciprocating movement  
Hydraulic machine includes: a casing; a piston slidable therein and separating two chambers; hydraulic switching elements for supplying liquid to and for evacuating the chambers, including at...
7481268 Collar assembly for pump thrust rod used to activate microswitch valve on chemical injection pump  
A collar assembly for inclusion with, or for a retrofit of, a chemical injection pump and method for manufacturing same. The collar assembly secures to a thrust rod of the chemical injection pump...
7207260 Reciprocating hydraulic machine, especially a motor, and dosing apparatus comprising such a motor  
A hydraulic motor comprises a body and a piston able to slide in a reciprocating movement in a cylindrical housing of the body. A chamber (C1, C2) is formed on each side of the piston and...
6729860 Pneumatically driven liquified gas booster pump  
Applicant provides a novel liquified booster pump. The pump takes high pressure boosted gas to a higher pressure. The pump is a pneumatically driven liquified gas booster pump with a shuttle valve...
6453793 Sprag motor  
A motor comprising a shaft with four racks which translate linear actuation of the racks to rotational motion of the shaft through pinions secured to sprag clutch assemblies. Motion of the rack...
6263777 Control system for reciprocating device  
A control system for a reciprocating device. The control system includes a switching valve having a fluid supply inlet, an exhaust outlet, a restrictor on the exhaust outlet, a drive line, a valve...
5951265 Fluid driven reciprocating engine or pump having overcenter, snap-action mechanical valve control  
A fluid driven reciprocating engine includes a main body having an inlet for receiving a primary fluid and an outlet for discharging the fluid. A drive piston is sealingly mounted in the main body...
5758563 Fluid driven reciprocating pump  
A fluid-driven reciprocating pump includes a housing and a reciprocating assembly defining first and second working fluid chambers. The housing includes an inlet and an outlet for introduction and...
5588813 Fluid motor driven pump arrangement having motive fluid exhaust into the pump chamber  
The dosing arrangement comprises two first pumps for a liquid medium B whose pistons are mutually connected by a piston rod, and two other pumps and for a liquid medium A which are positioned...
5505593 Reciprocable device with switching mechanism  
A reciprocable device comprising a reciprocable member mounted for reciprocating movement within a chamber and a valve system for controlling the supply of fluid under pressure to the reciprocable...
5490441 Automatic reciprocation of a reversible fluid pressure unit and switching valve therefor  
A fluid pressure piston-cylinder drive unit is reciprocated automatically by coupling the opposite ends of the cylinder through delivery conduits to a source of fluid pressure and exhaust through...
5399071 Pressure booster  
A liquid pressure booster includes a head member with a low-pressure inlet connectable to a liquid source at mains pressure, a high-pressure outlet connectable to the object to be tested, and a...
5388725 Fluid-driven apparatus for dispensing plural fluids in a precise proportion  
A fluid-driven proportioning pump for dispensing precise volumes of at least three different fluids includes a drive cylinder housing a correspondingly formed drive piston which divides the drive...
5363739 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...
5137436 Device for the generation of auxiliary pressure  
This invention relates to a device for the generation of auxiliary pressure, and has control valves (2) arranged in a control housing (1) of a control unit. The control valves (2), depending on...
5092746 Air-operated lubricant pump  
A lubricant pump that includes a pneumatic piston motor operated by compressed air, and is equipped with a control device that utilizes a slide valve mounted for reciprocal axial movement on the...
5083906 Fluid pump  
This invention relates to an improved gas-driven pump for pumping products, such as beverage syrups. A piston is mounted to a piston shaft for reciprocal movement within a housing. Cavities...
5058768 Methods and apparatus for dispensing plural fluids in a precise proportion  
A fluid-driven proportioning pump for dispensing precise volumes of at least three different fluids includes a drive cylinder housing a correspondingly formed drive piston which divides the drive...
5055008 Proportionating pump for liquid additive metering  
A proportioning pump for liquid additive metering having a housing with a diaphragm piston therein and inlet and outlet primary fluid lines to said housing for moving said diaphragm piston up and...
5024142 Cyclically operating fluid drive motor with magnetically controlled diaphragm valves  
Presented is a fluid drive motor that may be attached to a conventional garden hose, for instance, to effect reciprocating motion of a drive shaft that may be connected to a utilitarian device,...
5012643 Pressure-driven engine  
A pressure-driven engine is provided therein with an intake valve and an exhaust valve the opening and closing operations of which are controlled by a combination of the urging force of the...
4923168 Spool type switching valve device  
A spool type switching valve to be used for the switching operation of a diaphragm pump or a similar device, which simultaneously insures both preventing abrasion of the detent mechanism and...
4899638 Automatically-reversing piston-and-cylinder unit  
An automatically-reversing, fluid-actuated piston-and-cylinder unit includes a cylinder with a first section reciprocably receiving a piston and a second section reciprocably receiving a spool...
4879943 Expansible chamber motor with snap-acting valve  
This invention relates to an air motor having a snap-acting overcentering spring mechanism for snapping the valving of the air motor between first and second positions as the piston completes each...
4827832 Valve system for a reciprocating device  
A reciprocable device comprising a reciprocable member mounted for reciprocating movement within a chamber and a valve system for controlling the supply of fluid under pressure to the reciprocable...
4792291 Viscous damped valve for hydraulic pump  
The hydraulically powered fluid pump has a spool valve which controls the direction of travel of the pump. The spool valve is designed to switch between positions relatively slowly so that in...
4733599 Apparatus for controlling the flow of a pressure fluid in a motor  
An apparatus for controlling the flow of a pressure fluid in a motor includes an arm which cooperates with a locking device to regulate the flow of the pressure fluid through a shut-off member or...
4705458 Fluid operated pump  
A fluid operated pump comprising a housing including first and second cylinders. First and second pistons are rigidly fixed to each other and situated in their respective cylinders, the cylinders...
4684332 Ratio pump and method  
A ratio pump for delivering first and second liquid beverage components in a desired ratio comprising a motor and a pump driven by the motor. The first beverage component is pressurized and is...
4666376 Solar powered pump assembly  
An apparatus for converting low level thermal radiation into mechanical work. The apparatus incorporates a collector (11) to receive and concentrate low level thermal energy to generate a pressure...
4610192 Reciprocable device  
A reciprocable device comprising a reciprocable member mounted for reciprocating movement within a chamber and a valve system for controlling the supply of fluid under pressure to the reciprocable...
4550642 Fluid pressure operated piston engine assembly  
A fluid pressure operated piston engine assembly, such as a pump assembly, including a fluid pressure operated piston engine and a fluid valve for coupling fluid under pressure to alternative...
4540349 Air driven pump  
This invention relates to an improved air driven pump for pumping products such as beverage syrups. Two opposed pistons are mounted on a common piston shaft for reciprocal movement within a...
4519293 Oil well jack  
The invention relates to an oil well jack having a walking beam mounted on a frame for motion in a vertical plane; and a plurality of hydraulic actuators connected to move the walking beam. The...
4416593 Gas operated down hole pump  
Double acting, gas operated pumps for lifting formation fluids from a well are disclosed as comprising a housing connectible to the lower end of a production string suspended within a well, and a...
4325285 Compressed air motor  
A compressed air motor comprises a cylinder with a piston slidable in said cylinder and connected to a compressed air inlet through a slide valve mechanism which alternately admits respective...
4220284 Oscillating water sprinkler  
A snap-action toggle valve reverses the direction of an oscillating sprinkler powered by a paddle-piston motor. Adjustable stops on the sprinkler tube trip the valve at the end of each sweep,...
4181066 Expansible chamber motor  
An air motor comprising a cylinder, a piston, and a valve mechanism for controlling the supply and exhaust of air to and from opposite ends of the cylinder, the valve mechanism comprising a...
4172698 Pressure gas operated pump  
A pressure gas operated pump, comprises, a housing which has two spaced apart double pump chambers, with diaphragms stretched across each pump chamber so as to define a driving fluid chamber and a...
4166411 Fluid-operated linear actuator  
A linear fluid-operated actuator includes a casing having a piston assembly slidingly movable in a main cylinder within the casing and provided with force transmitting means adapted to transmit...
3915065 Oscillating action fluid motor  
An oscillating action fluid motor which comprises an outer housing having an interior fluid receiving chamber formed therein. A valve having an inlet port and an outlet port is also formed in the...
3790125 CONTROL VALVE WITH POWER ACCUMULATING, SNAP ACTION, SPOOL DRIVE  
The spool of a fluid control valve is movable axially from a first position to a second position with a snap action by a power accumulator to which predetermined external power is applied. While...
3737254 REGENERATIVE RAPID STROKE RECIPROCATING HYDRAULIC PRESSURE CONVERTER  
A hydraulic converter in which a differential piston is reciprocable in a cylinder by pressure fluid admitted continuously thereinto through a cylinder inlet at one side of the piston. Valve and...
3653784 PROPORTIONATING FEED PUMP  
The invention relates to a proportioning pump for feeding at least two different liquids in a definite flow proportion. The pump has two interconnected displacement members executing their suction...
3643273 AUTOMATIC TOOTHBRUSH WITH A FLUID MOTOR  
An automatic toothbrush having a fluid motor, in particular a water motor, which produces reciprocating movements of a part, such as a piston, coupled to the brush proper, one or more ports being...
3635125 DOUBLE-ACTING HYDRAULIC PUMP AND AIR MOTOR THEREFOR  
A hydraulic pump and double-acting air motor therefor including means for controlling the inlet and exhaust of air to and from the opposite sides of the piston in the air cylinder. A pilot valve...
3548717 CONTROL FOR GAS-POWERED MOTOR  
3514226 AIR POWERED VACUUM PUMP  

Matches 1 - 50 out of 95 1 2 >