Matches 101 - 150 out of 253 < 1 2 3 4 5 6 >


Match Document Document Title
4475444 Brake apparatus  
A brake apparatus 10 having a master cylinder 16 with a flange 24 connected to a first shell 56 of a booster 18 and a stationary firewall 71 of a vehicle. A first wall 70 located between the...
4443179 Rapid-action mold closer  
An apparatus for closing a mold in an injection-molding operation has a double-acting main piston that is connected to a mold-carrying plate and that move axially in a main cylinder. A...
4429618 Hydraulic roll-adjustment apparatus  
A hydraulic adjustment apparatus as is for instance used to adjust a roller of a rolling mill has a cylinder forming a first cylinder chamber and having a first cylinder surface directed...
4404892 Hydraulic operating apparatus  
A hydraulic operating apparatus including an actuating cylinder having a piston arranged therein and moved by a fluid under high pressure further includes a control valve having only one metallic...
4388806 Hydro-pneumatic operating device actuated with a pneumatic pressure-medium or servo-operation, in particular for motor-vehicle clutches  
A hydro-pneumatic operating device for motor vehicle clutches permits shifting into second or higher gears without operation of the clutch pedal, by manipulation of an electric switch that...
4380427 Compact hydraulic drive for die closing unit of injection molding machine  
A hydraulic actuator assembly for a push-type die closing unit of an injection molding machine capable of producing rapid die opening and closing movements with a small volume of pressurized fluid...
RE30934 Hydraulic drive for the die closing unit of an injection molding machine  
A hydraulic drive for the die closing unit of an injection molding machine in which at least one power cylinder and power piston with a coaxially attached auxiliary cylinder opens and closes the...
4325287 Hydraulic actuator for injection molding machine  
A hydraulic actuator assembly for use in the die closing unit of an injection molding machine, the actuator assembly having a large power cylinder and a smaller travel cylinder with a large power...
4319609 Five-position hydraulic actuating apparatus  
Hydraulic actuating apparatus with digital input comprising a movable output member spring biased to a neutral position and capable of moving to one or other of two working positions under the...
4296677 Tandem hydraulic actuator  
A linear fluid actuator having two pistons and two cylinder chambers in tandem to provide redundancy when supplied from independent pressure sources. The actuator is balanced in that the actuator...
4158327 Mold closing device of injection molding machine  
A mold closing device of an injection molding machine is disclosed which is reliable in operation and simple in structure. Both the opening and closing of the valve for hydraulic oil passage can...
4121501 Flow combining system for dual pumps  
A fluid circuit connects a first pump to a first motor and has a control valve for controlling fluid flow to the first motor. The control valve is movable between a first position at which the...
4089172 Position controller  
A device for infinitely controlling the position of a controlled member along its axis of movement. The device includes hydraulic actuators coaxially secured to the controlled member and a...
4072085 Combined hydraulic and vacuum booster  
A combined hydraulic and vacuum booster includes hydraulic and vacuum boosters coaxially mounted in series and having a common force output member. The combined booster includes common operating...
4057010 Vehicle mounted compactor apparatus  
Vehicle mounted compactor apparatus comprising multiple pressure actuated cylinders connected such that fluid is initially directed to a first cylinder to provide rapid reciprocating movement of a...
4046060 Hydraulic control systems for use with mining apparatus  
A hydraulic control system for use with double-acting shifting rams in a mine working.The system has a pump for supplying pressure fluid and main and return feed lines or conduits connected to the...
4037743 Material handling bucket dual cylinder system  
A material handling bucket dual cylinder system having two fluid valves and two fluid cylinder assemblies comprising a fluid system which controls the loading and dumping of a bucket. The system...
4033468 Hydraulic boom-lift system with selective speeds  
Greater overall speed of crane operation is made possible by using a plurality of hydraulic piston-cylinder sets together with valving which can direct the pumped hydraulic fluid selectively to...
4023364 Swing flow supplemental travel for an excavator  
Disclosed herein is a drive and swing control system for an excavator wherein the swing pump may selectively direct fluid to the drive motors of the vehicle when the swing motor of the vehicle is...
3990594 Fluid-actuated clamping apparatus and circuit  
A load-clamping apparatus wherein the loaded and unloaded condition of the clamping arms (respecting their contacting an external body) is automatically sensed, and used to determine the type of...
3977102 Load ejection improvement for auger scrapers  
A control system for the hydraulically powered auger of a self-loading auger scraper that has an ejector operated by a hydraulic cylinder. One manual control valve starts and stops the auger in...
3976097 Hydraulic control arrangement  
A hydraulic control arrangement for control of fluid flow to a consumer device and comprising a three-position valve having a valve member movable between a neutral position closing at least one...
3975909 Engine sensor hydraulic control system  
The disclosure relates to plural, motor driven hydraulic pump circuits, including circuits having the pumps in at least one circuit operated in pairs with all pumps being driven by a single prime...
3974990 Dual ejector stores attitude control system  
An aircraft stores suspension and release device including extendible ejers for forcibly ejecting an attached store. The extendible ejectors are hydraulically actuated and dependently connected...
3972185 Hydraulic system for a pipelayer  
A hydraulic system for pipelayers includes a first circuit with a pump and a motor for controlling a boom and a second pump and motor for controlling a hoist with pressure-responsive control means...
3961559 Actuator  
The actuator comprises a cylinder of non-circular cross section, two types of pistons and a piston rod which is provided with at least one spiral male thread having a pre-determined helical angle...
3960284 Hydraulic backhoe circuitry  
A hydraulic backhoe utilizes two pairs of hydraulic pumps to power independent crawler track drives in any forward or reverse direction, and high or low speed ranges; allowing, for example, a wide...
3958494 Multiple displacement hydraulic motor drive apparatus  
A rotary power drive is provided for delivering a substantially constant horsepower over a wide speed range in one direction of rotation comprising two or more constant displacement hydraulic...
3955474 Fluid pressure system having pumps and valves  
A fluid pressure system having a plurality of pumps, valves, and fluid-pressure responsive units. These items are interconnected by fluid lines, and check valves are arranged to control the fluid...
3952432 Mechanism for moving scraper bowl ejector blade  
A motor scraper has a dozer-type ejector blade which is forwardly movable to eject earth from the scraper bowl by an operating mechanism which includes a movable carriage having three hydraulic...
3952825 Hydraulic steering system for articulated vehicles  
A wheeled vehicle which has two members connected by an upright joint has a pair of hydraulic steering jacks coupled between the members on opposite sides of the joint, and the vehicle is steered...
3948145 Fluid control mechanism  
This invention relates to a fluid control system adapted to be used in a rock or roof drill to control the drill feed rate automatically with respect to the resistance of the strata material to...
3945138 Hydraulically controlled and driven bucket wheel dredge  
A hydraulically controlled and driven dredge, in which the pumps for delivering the driving fluid for the bucket wheel drive are equipped with output controls for controlling the fluid delivery in...
3941549 Reciprocating screw injection molding machine with hydraulic actuating mechanism with prefill valve  
A reciprocating screw injection molding machine characterized in that the screw is actuated by coaxial hydraulic rotary and linear motors, and in that a movable mold supporting platen has a...
3916767 Hydraulic control circuit for vehicles  
A hydraulic control circuit for a front end loader is disclosed in this application. A device is used to interconnect a main and an auxiliary circuit so that additional fluid may be supplied to...
3916766 Control valve means for hydraulic press  
A hydraulic molding press comprising a main cylinder in which a main ram is mounted for forward and reverse movement and the main ram has a booster cylinder therein into which a hollow stationary...
3913450 Hydraulic Control system for press brakes or the like  
A control and actuator system for a press brake having a frame, a bed, a ram, and a pair of hydraulic cylinders for reciprocating the ram, utilizes a jackscrew arrangement in conjunction with...
3901395 Implement stabilization method and apparatus  
The fluid pressure supplied to the hydraulic cylinders which extend the stabilizing arms of a backhoe is replenished by pressure from the bucket-controlling cylinder whenever the arm-extending...
3889586 Control for fluid pressure actuators  
A control for hydraulic actuators preferably relatively moving platens of a press toward each other has means for coordinating the operation of the actuators. Preferably, the coordinating means...
3842714 COMBINE HYDRAULIC VALVE  
A control valve consisting of two-way normally closed solenoid poppet valves and two stage normally open solenoid poppet valves. The normally closed solenoid valves are arranged to direct flow to...
3841096 CONTROL AND REGULATOR DEVICE FOR A LOAD-INDEPENDENT REGULATED HYDRAULIC SYSTEM  
A control device for the control and load-independent regulation of hydraulic consumers of hydraulically driven installations, a pressure-influencing valve with a pressure reducing piston being...
3832849 SERVO STEERING DEVICE, ESPECIALLY FOR AUTOMOBILES  
A hydrostatic servo operated steering system having primary and shunt motors connected to the steering linkage under control of steering wheel and pressure operated valves to effect a change in...
3828650 MULTISPEED HYDRAULIC OR PNEUMATIC DEVICE  
A hydraulic or pneumatic device is provided with a cylinder and piston system for providing a rapid stroke and a power stroke. The piston part of said system comprises a piston-rod like plunger...
3828875 HYDRAULIC CONTROL APPARATUS FOR A MOBILE SLURRY HANDLING SYSTEM  
A hydraulic control apparatus for a slurry hose transportation system consisting of one or more powered carts and one or more unpowered carts where the powered carts include a propulsion system...
3818801 FLUID ACTUATING MECHANISM HAVING ALTERNATIVELY SELECTABLE FAST AND SLOW MODES OF OPERATION  
A fluid actuating mechanism is provided having mechanically intercoupled first and second piston and cylinder units coupled with a fluid source and control circuit to selectively enable fast or...
3817152 HYDRAULIC JACK  
Fluid pressure system comprises a piston which is slidably mounted in a cylinder and divides said cylinder into two variable chambers, said chambers being interconnected through a by-pass, and...
3811667 PNEUMATIC HOLDING DEVICE  
A holding or clamping device of the type comprising two pressure cylinders adapted to produce a first preliminary weak holding force and subsequently a greater holding force is provided with a...
3800669 CONTROL VALVE ARRANGEMENT FOR A HYDRAULIC DRIVE  
First and second control units, having first and second control valves, are provided for connecting first and second pumps with a plurality of hydraulic first and second consumer motors,...
3793831 ELECTROLIC CONTROL VALVE  
A control valve consisting of two-way normally closed solenoid operated poppet valves and two-way normally open solenoid operated poppet valves. The normally closed solenoid operated valves are...
3789739 REMOTE HYDRAULIC CONTROL  
A closed center remote control system selectively modulating pressure at either end of a reciprocal spool control valve so as to incrementally position the valve spool with such precision to...

Matches 101 - 150 out of 253 < 1 2 3 4 5 6 >