Matches 1 - 44 out of 44


Match Document Document Title
5651666 Deep-well fluid-extraction pump  
This invention features a small-enveloped (with an outside diameter of at least approximately 38 mm), single-acting, hydraulically-operated, reciprocating, deep-well, fluid-extraction pump,...
5377719 Pneumatic valve, particularly for control of compressed-air-operated membrane pumps  
A pneumatic valve, designed to control/pressurize a membrane pump, compresses a valve body (1) having gates (8-12) for compressed-air-flow/operation/pressurization of said pump. The valve body is...
5375625 Valve body assembly with detent and locking mechanism  
A valve assembly including a valve housing with a spool valve mounted for reciprocation within the valve housing, with a detent mechanism disposed on the spool valve and the valve housing for...
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...
4534168 Pump jack  
A pump jack having a walking beam oscillated in a vertical arc by a hydraulic actuating cylinder that receives pressurized hydraulic fluid from a variable displacement pump. The hydraulic...
4513653 Automatic hydraulic reversing valve for a double-action working cylinder  
This invention relates to an automatic hydraulic reversing valve for a double-action working cylinder. The purpose of the invention is to employ valves of this type without the requirement of an...
4383475 Hydraulic cylinder and piston with automatic reciprocation valve  
A reciprocation valve for a hydraulically actuated reciprocation motor, wherein the motor has hydraulic inlet and outlet passages into a cylinder through a porting block, and a slidable collar is...
4379680 Ambient air timing device  
An air timing device for a high pressure reciprocating injector pump 14 employing a piston or movable wall 50 and orifice 48 combination that is mechanically reset on the suction stroke of the...
4314447 Refrigerant motor  
Apparatus for converting energy contained within a stream of gaseous refrigerant to mechanical work. A refrigerant motor utilizing a diaphragm dividing a chamber into an equalizing chamber and a...
4280396 Hydraulic oscillator  
A hydraulic oscillator in which a piston reciprocates between first and second positions in a cylinder. A reversing pilot valve controls fluid flow to ends of the cylinder and flow through first...
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...
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...
4161308 Switching valve assembly for fluid motor-driven injector pump  
A pump for injecting metered amounts of liquid into a line or a conduit, which includes a reciprocating pumping piston in a cylindrical chamber having an inlet and an outlet, both of which are...
4155287 Hydraulically operated impact devices  
Hydraulic actuation of a device for delivering impact energy to a load, such as a pile driver, is provided by a hydraulically operated oscillator having a piston which is reciprocal in a cylinder...
4102609 Valve control system for air powered vacuum pump  
A source of fluid, regulated as to pressure intensity before entry into a control valve assembly, drives a fluid biased piston motor. A mechanically actuated and fluid held valve in the control...
4082032 Control of hydraulically powered equipment  
A hydraulically driven hammer is disclosed, along with valve actuation arrangements which operate to switch hydraulic forces on the hammer ram after preselected intervals following application of...
4079660 Safety valve for piston type pneumatic powered motor  
A piston type, pneumatically powered motor includes a valve assembly for reversibly supplying pneumatic fluid to opposite sides of a piston to reciprocate the piston through power strokes in both...
4034648 Reciprocating cylinder assembly for self-propelled sprinkler systems  
A reciprocating cylinder assembly for self-propelled sprinkler systems and the like comprising a cylinder tube having hollow plugs at each end having slidably engaged therein, a piston rod, said...
4022109 Automatic directional control valve  
A pressure responsive semi-automatic directional control valve for controlling a hydraulic cylinder. Manual movement of the valve from neutral to starting position applies pressure to one side of...
3844197 HYDRAULIC MOTOR AND DRIVE ATTACHMENT  
A small hydraulic motor of the type for being axially advanced in an enclosure tube and comprising a tubular frame means having an inlet at one end and operatively positioning an output shaft at...
3689955 WINDOW WIPER SYSTEM  
In a preferred form, this disclosure relates to a window wiper system for wiping a window of an automotive vehicle. The window wiper system includes a fluid motor having a cylinder and a piston...
3664377 CONTROL FOR A RECIPROCATING FLUID MOTOR  
A control for a reciprocating fluid motor in which a sliding valve is moved back and forth by a two-piece drive sleeve of resilient material. The drive sleeve comprises a slotted tubular member...
3548717 CONTROL FOR GAS-POWERED MOTOR  
3605556 BOOSTER PUMP  
3402642 Reciprocating valve and piston  
3397619 Steam engine inlet valve mechanism  
3376791 Hydraulic oscillating power take-off mechanism for tractors  
3289545 Fluid powered hydraulic motor  
3149538 Hydraulic servo-mechanism  
3130644 Fluid transmission  
3070959 Fluid pressure operated mechanisms  
2997030 Time cycle controls  
2986127 Apparatus for transferring a pressurized normally gaseous liquid  
2965078 Piston engine unit for submerged operation in wells  
2961048 Pump pressure hydraulic jarring tool  
2951468 Fluid motor and control means therefor  
2887094 Water supply actuated medicinal additive proportioning device  
2864342 Hydraulically operated motor and control means therefor  
2829626 Alternator valve assembly for a fluid pressure operated windshield wiper motor  
2825955 Pumping of concrete  
2813514 Pneumatic saw and the like  
2808815 Windshield wiper motor  
2804055 Fluid motor with piston actuated valve means  
2785661 Hydraulic mechanism valve  

Matches 1 - 44 out of 44