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A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
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| Number | Title | Issue Date |
| 7971519 | Apparatus for hydraulically adjusting the blades of an impeller of an axial-flow fan An apparatus for hydraulically adjusting the blades of an impeller of an axial-flow fan, comprising an adjustment cylinder that on both sides of a piston displaceably disposed in the cylinder has a first chamber and a second chamber respectively provided with a conn... | 07/05/2011 |
| 7870817 | Actuator using fluid cylinder and method of controlling the same An actuator using a fluid cylinder in which rigidity may be attained with a simple configuration, includes a fluid cylinder, a first choke valve device, and a second choke valve device. The first choke valve device is disposed between a fluid pressure source and a f... | 01/18/2011 |
| 7631590 | Hydraulic steering arrangement The invention concerns a hydraulic steering arrangement (1) with a supply connection arrangement (P, T), a working connection arrangement (A, B) connectable to a steering motor (5), a steering unit (6) located between the supply connection arran... | 12/15/2009 |
| 7107766 | Hydraulic pressurization system The present invention relates to a hydraulic pressurization system, in particular for application to pressurization devices operating in accordance with the high hydrostatic pressure principle. In particular, the present invention provides a pressurization system fo... | 09/19/2006 |
| 7048005 | Throttle valve device for a pneumatic power tool A throttle valve device for a pneumatic power tool comprises a casing (10) with an air inlet passage (11), an air outlet passage (12), a valve chamber (13) with a main valve seat (14) and a main valve element (15), and a man... | 05/23/2006 |
| 7036421 | Driving device, particularly lifting device for a working vehicle The invention concerns a driving device, particularly a lifting device for a working vehicle, with a drive in the form of a hydraulic motor, the drive having a first connection and a second connection, a pump and a control valve arrangement between the drive and the... | 05/02/2006 |
| 7011010 | Free piston device with time varying clearance seal A free piston device which is particularly applicable for use with a linear motor for providing acoustic energy to a cryocooler for generating refrigeration at cryogenic temperatures which comprises a time varying clearance seal to counteract piston drift. ... | 03/14/2006 |
| 6997098 | Method and apparatus for driving hydraulic motors with agricultural tractors For connection to a hydraulic power supply of a tractor, wherein the tractor comprises a plurality of hydraulic supply circuits, and wherein each hydraulic supply circuit comprises a pair of quick couplers for connecting the hydraulic supply circuit to a hydraulic d... | 02/14/2006 |
| 6577039 | Driving system and actuator A driving system using an intercalation substance as a novel mechanochemical system includes an actuator using the intercalation substance and driven by exchange of solutions or by changing concentration of a solution, and a solution supplier that supplie... | 06/10/2003 |
| 6415703 | Method for controlling the motion velocity of a hydraulically driven machine, a drive system for a hydraulically driven machine The present invention concerns a method for controlling the speed of motion of a hydraulically operated machine, an operating system and a control device of the machine. The flow line (3) of the medium from the pump (2) to the machine (1) is divided into ... | 07/09/2002 |
| 6357475 | Pneumatic sequential control valve A pneumatic sequential control valve for successive aeration and deaeration of two consumers, wherein for purposes of aeration compressed air is initially applied to the first consumer and only subsequently to the second consumer, and for deaeration the c... | 03/19/2002 |
| 6298767 | Undersea control and actuation system A system for remotely controlling an undersea device. The system employs a gas-pressurized liquid reservoir that can be recharged from at least one replaceable gas bottle. A pressure-regulating valve is employed to control the pressure of the liquid leavi... | 10/09/2001 |
| 6276135 | Self-contained hydraulic ESD system A hydraulic control circuit for a hydraulic actuator, including a high-low pilot valve having a sensing port for connection to a flow line. A single pressure line connects the high-low pilot to a hydraulic actuator. A second line connects the high-low pil... | 08/21/2001 |
| 6041673 | Dual function throttle control system for heavy construction equipment machines A dual function throttle control system is disclosed for earthmoving machines. The throttle control system includes a hand lever that is electrically connected to a proportional directional hydraulic valve. Rotation of the hand lever controls actuation of... | 03/28/2000 |
| 5692427 | Flow reinforcement directional control valve for a hydraulic circuit A flow reinforcement directional control valve that is capable of reinforcing a pressure fluid to two actuators, can be formed as compact and yet is capable of flowing a return fluid out of a single actuator into a tank is provided, wherein a valve block ... | 12/02/1997 |
| 5653514 | Automatically controlled boosted braking system with monitored reserve An automatically controlled braking system comprising a pneumatic vacuum servo and a pneumatic solenoid valve capable of selectively connecting the serov to first or second sources of pressure. The solenoid valve includes a flap valve which is subjected t... | 08/05/1997 |
| 5511457 | Steering control system for an autonomous machine A steering control system for an autonomous machine has a manual steering control valve for directing fluid from a pump to either a head end chamber or a rod end chamber of a hydraulic steering actuator. In one embodiment, an electrically actuated steerin... | 04/30/1996 |
| 5481874 | Exhaust pressurizing circuit including flow amplification An exhaust manifold (25) of a fluid power and control system, the pressure of which is varied when the fluid motor (10) is subjected to a bidirectional positive or negative type load (W). This exhaust manifold (25) is also supplied from a source of exhaus... | 01/09/1996 |
| 5193429 | Vacuum type brake booster A vacuum type brake booster includes a housing including a front shell and a rear shell in which a constant negative pressure chamber and a variable pressure chamber are defined by a power piston and a diaphragm, a partition for dividing the variable pres... | 03/16/1993 |
| 5188014 | Hydraulic cylinder with pressure transmission The hydraulic cylinder comprises a cylinder jacket (1), a piston-rod guide flange (2), and a cylinder bottom (3). Disposed within the cylinder are a primary piston (4) provided with a piston rod (6) and a secondary piston (11) connected to two plungers (7... | 02/23/1993 |
| 5163542 | Clutch actuating hydraulic circuit A switch-over valve 6 is provided in a pressure circuit 31 between a hydraulic pump 2a and a clutch 7, and a pressure limiting valve 5 is provided between a reflux circuit 9 for the valve 6 and the pressure circuit 31. The clutch actuating hydraulic circu... | 11/17/1992 |
| 5115835 | Stacked type hydraulic control valve system A hydraulic control valve which is equipped with two direction change-over valve groups individually having traveling change-over valves, and first and second hydraulic pumps corresponding to those direction change-over valve groups. The traveling section... | 05/26/1992 |
| 5076141 | Liquid pressure booster A liquid pressure booster which may be used in a brake booster or the like is disclosed. A second supply passage is provided which allows a power chamber of the liquid pressure booster to communicate with an external source of pressure fluid without passi... | 12/31/1991 |
| 5050380 | Means for receiving and subsequently emptying hydraulic fluid from a hydraulic system A means for receiving and subsequently emptying hydraulic fluid from a hydraulic system is described. It comprises a working cylinder (1) and a supply conduit (8) disposed between a pump and the working cylinder for supplying hydraulic fluid at high press... | 09/24/1991 |
| 5014596 | Remote control modification for manually controlled hydraulic systems A remote control modification (11) for a hydraulic steering system (13) of the type used to steer underground loaders and the like is disclosed. The remote control modification comprises a bidirectional, spring-loaded remote control valve (51) connected i... | 05/14/1991 |
| 5005464 | Brake booster An open/close valve which opens or closes a passage providing a communication between a valve mechanism and a constant pressure chamber of a brake booster is disclosed. The valve comprises a valve seat formed in surrounding relationship with a passage, a ... | 04/09/1991 |
| 4989495 | Hydraulic positioning system with normal and high supply and exhaust flow paths The hydraulic piston cylinder assembly which operates the governor of a turbine which powers a hydropower generator has a servo valve capable of flowing only a portion of its flow requirements during normal low power fluctuation conditions of the turbine'... | 02/05/1991 |
| 4947894 | Flow amplifier in hydraulic steering system of a transport vehicle A flow amplifier in the hydraulic steering system of a transport vehicle comprises a three-position hydraulically operated hydraulic directional control valve having a single sliding spool valve and internal hydraulic pilot lines connected, when in the cr... | 08/14/1990 |
| 4921009 | Torque control system A system for controlling the amount of torque applied by a hand-held power tool to fasteners during an assembly of parts. In the preferred embodiment, a torque control circuit is operated by air to deliver a selected volume of air under selected pressure ... | 05/01/1990 |
| 4914917 | Brake actuating device for automotive vehicles A brake actuating device for automotive vehicles comprises a hydraulic brake force booster and a hydraulic tandem master cylinder to which pressure is applied by the brake force booster and which is in communication with the hydraulic wheel brake circuits... | 04/10/1990 |
| 4889033 | Pneumatic actuator In a pneumatic actuator wherein air pressure in a diaphragm compartment (38) is changed by controlling solenoid valves (39, 39 and 41) thereby to output a displacement; an intake solenoid valve (39) has a spring (30h) which penetrates a center part of a f... | 12/26/1989 |
| 4867041 | Vortex amplifier driven actuator spool A hollow cylindrical amplifier driven actuator spool has first and second vortex chambers divided by an internal piston. A shaft is attached to the pistion and extends out the cylinder. Fluid logic controls the fluid flow in the vortex chambers so that th... | 09/19/1989 |
| 4835967 | Hydraulic booster equipped with emergency accumulator A hydraulic booster equipped with an emergency accumulator, wherein reaction and power pistons are slidably fitted in a housing such that the two pistons define a power chamber therebetween. The booster includes a control valve having a normally closed po... | 06/06/1989 |
| 4819541 | Control of a double-action pneumatic drive The drive is controlled such that reduced pressure is applied during a forward motion phase and venting flow from the drive is used as dynamic control pressure to hold off application of full driving pressure until, through physical impediment, piston mov... | 04/11/1989 |
| 4809586 | Hydraulic system for a work vehicle The present invention is directed to a hybrid hydraulic system for a work vehicle having both an open center hydraulic circuit and a close center hydraulic circuit. An internal combustion engine drives a fixed displacement pump and a variable displacement... | 03/07/1989 |
| 4768339 | Hydraulic drive system A hydraulic drive system for a construction machine in which a hydraulic circuit has at least one hydraulic pump, at least first and second hydraulic actuators driven by a hydraulic fluid discharged from the pump, and at least first and second directional... | 09/06/1988 |
| 4763560 | Method and apparatus of controlling and positioning fluid actuator Method and apparatus of controlling and positioning a fluid actuator by supplying pressurized fluid to right and left actuating chambers of the actuator through an on-off control valves. To drive and position the actuator rapidly and accurately, the actua... | 08/16/1988 |
| 4759255 | Brake booster with solenoid valves A brake booster includes a solenoid valve which enables the opening or closing of a passage which provides a communication between a constant and a variable pressure chamber through a valve mechanism. The invention utilizes an empty space left within the ... | 07/26/1988 |
| 4745844 | Control block comprising a plurality of valve units for a plurality of hydraulic drives, in particular fork lift trucks A control block is made up of a plurality of directional valves which serve to actuate a plurality of hydraulic drives to which in some cases a different pressure is to be supplied. For this purpose two pressure-limiting valves adjustable to different pre... | 05/24/1988 |
| 4736811 | Steering control system The steering system of some lightweight vehicles are electronically controlled and have a manually operated mechanical control as a backup. Such manual backup control would not be adequate for large earthmoving, construction and industrial type vehicles. ... | 04/12/1988 |
