|
Match
|
Document |
Document Title |
|
|
7243592 |
Draining of oil leak in a hydraulic cylinder
A device for a single-acting hydraulic cylinder ( 1 ) designed to lift or pull a load upon the existence of an oil pressure on the rod-side of a cylinder piston ( 7 ), where the cylinder bottom (...
|
|
|
7124815 |
Tubing injector for variable diameter tubing
A tubing injector apparatus for use with variable diameter tubing. The apparatus comprises a pair of carriages which may be moved transversely and pivotally with respect to one another by actuating...
|
|
|
5875631 |
Control system for a hydrostatic transmission
A hydrostatic transmission has a pair of overcenter variable displacement pumps, each having a flow control element controlled by a double acting actuator to control direction and flow rate of the...
|
|
|
4883091 |
Multi-port self-regulating proportional pressure control valve
A multi-port, self-regulating, proportional control valve preferably uses a load output feedback system to produce working fluid load output pressures that are proportional to pilot control fluid...
|
|
|
4527681 |
Variable speed drive unit with graduated increasing and decreasing speed profile
A variable speed drive unit having a clutch disc stack including input and output shafts, a first series of drive plates located in a fluid reservoir and supported for rotation by a rotatable...
|
|
|
4517877 |
Step control apparatus for a fluid motor
Step control apparatus for a fluid motor includes a plurality of devices each responsive to an external signal for initiating movement of the fluid motor. Also included is a mechanism for stopping...
|
|
|
4503752 |
Hydraulic pumping unit
A hydraulic pumping unit is provided that is especially adapted for use for pumping oil from a well, and that provides for independent upstroke and downstroke speed control of the well sucker rod....
|
|
|
4404897 |
Fluidic repeater
Two fluid passages are connected through flow restrictors to a fluid supply. Downstream of the restrictors the fluid supply has a drooping pressure-load characteristic. Venting means for the fluid...
|
|
|
4354555 |
Hydraulic lifting arrangement for implements, especially on tractors
An improvement in apparatus for lifting an agricultural implement carried by a tractor provides for automatic rapid level adjustment of the implement relative to the terrain under control of a...
|
|
|
4346729 |
Temperature control system and pushbutton controlled pneumatic actuator
A temperature control system including a pushbutton controlled, pneumatically operated actuator for controlling a vehicle heating and air conditioning system is disclosed. A plurality of pushbutton...
|
|
|
4345507 |
Elevator fluid flow control valve
A fluid flow control valve system to be used to control a hydraulic lifting mechanism used on elevators and the like. The valve system includes an inlet conduit from the pump and an inlet-outlet to...
|
|
|
4211256 |
Circulating flow hydraulic pilot system
A circulating flow hydraulic pilot system supplies pressurized fluid from a source to a sump through first and second parallel disposed conduits. Selective pressurization of each conduit is...
|
|
|
4184514 |
Valve system incorporating single failure protection logic
A valve system incorporating single failure protective logic. The system consists of a valve combination or composite valve which allows actuation or de-actuation of a device such as a hydraulic...
|
|
|
4073315 |
Valve assembly
A valve assembly with decompression means having a valve body with a pressure port, a return port and a control port with internal passages connecting the ports, and a pair of valves within said...
|
|
|
4044653 |
Hydraulic control apparatus for injection molding fluent plastic material
Hydraulic control apparatus for controlling the rate of flow of a fluent plastic from an injection nozzle of an injection molding machine wherein an injection ram is connected to a hydraulic piston...
|
|
|
3921479 |
Feed mechanism for an end-bevel machine
The invention contemplates two-component feed mechanism for a machine tool, whereby a single adjustment is operative to determine the relative rate of feed for the respective feed components. For...
|
|
|
3918350 |
Pressurized fluid controlled vibrators
A vibrator device is provided in which the actuator rod of a hydraulic ram or jack is rapidly reciprocated, automatically, by means of a hydraulic control circuit which includes a pump, a plurality...
|
|
|
3791627 |
PNEUMATICALLY-OPERATED HOIST WITH AUTOMATIC CONTROL SYSTEM
A pneumatically-operated hoist is operated through an automatic, pneumatic control system. The operation of the hoist is initiated through an external signal for the pneumatic control system by...
|
|
|
3739165 |
FLUID PRESSURE OPERATED DIGITAL DISPLAY
A digital display device is disclosed for displaying increments of mechanical movement, which includes a movable piston member having an ordered series of numerals inscribed thereon along its...
|
|
|
3645167 |
CONTROL ARRANGEMENT FOR HYDRAULIC MOTORS
A hydraulic control arrangement for controlling the operation of a hydraulic motor equipped with a piston which may be subjected on both sides with fluid pressure. A control valve controls the flow...
|
|
|
3643547 |
HYDRAULIC RECIPROCATING ENGINE
A hydraulic reciprocating engine having a piston which is movable in a cylinder, at least one piston rod is secured to the piston. On one side of the piston a supply pressure prevails, and on the...
|
|
|
3516332 |
HYDRAULIC SYSTEM
|
|
|
3498183 |
FLOW CONTROL FOR FLUID SYSTEM
|
|
|
3448658 |
RESTRICTOR FOR HYDRAULIC PUMP
|
|
|
3410361 |
Vehicle speed control device
|
|
|
3407708 |
Fluid control system
|
|
|
3283667 |
Combination fluid actuated means and control valve
|
|
|
3279483 |
Hydraulic isochronous-droop governor
|
|
|
3266239 |
Apparatus for controlling the position of a part or parts
|
|
|
3257911 |
Fluid powered servomechanism of a redundant, majority voting type
|
|
|
3246572 |
Fluid control apparatus
|
|
|
3218804 |
Electro-hydraulic lift for human support
|
|
|
3189050 |
Pressure fluid operable control valve
|
|
|
3187772 |
Fluid control device
|
|
|
3156157 |
Positioning control system and apparatus
|
|
|
3132485 |
Hydraulic motor control
|
|
|
3128673 |
Positioning apparatus
|
|
|
3110228 |
Oscillatory actuator system
|
|
|
3110321 |
Servo operated actuating devices
|
|
|
3103785 |
Fuel feed and power control system for gas turbine engines
|
|
|
3103853 |
Hydraulic servo control mechanism
|
|
|
3095030 |
Hydro-mechanical governor
|
|
|
3087471 |
Proportional positioning using hydraulic jet
|
|
|
3085556 |
Rate signal generator
|
|
|
3072210 |
Automobile speed control system
|
|
|
3065145 |
Straddle flapper controlled hydraulic valve
|
|
|
3045983 |
Ram air control for aircraft air conditioning system
|
|
|
3020892 |
Constant flow valve assembly
|
|
|
3013538 |
Pumping unit with reversing method
|
|
|
3006595 |
Tracer mechanisms
|