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Patent No. 6295668

Maternity Beach Chair

A beach chair which can be adapted for a woman who is pregnant and wishes to sunbathe in the prone position.

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Class 137/625.2 - Supply and exhaust


Subclass of Class 137 - Fluid handling
Definition: Devices comprising a flow line controlled by a valve unit
No. of patents: 33
Last issue date: 02/05/2008


NumberTitleIssue Date
7325752Single valve ready to use hose end sprayer
Disclosed herein are various embodiments related to a chemical sprayer that includes a sprayer head assembly and a container. The container defines a cavity for storing a chemical to be sprayed. The sprayer head assembly includes a chemical passage, a carrier fluid ...
02/05/2008
7306462Gas operating system for firearm simulators
A removable gas supply for a weapon simulator, wherein the gas system cycles the bolt or slide of the firearm to provide recoil, actuate a hammer/trigger mechanism and provide realism of the original weapon functions. The weapon simulator has a housing defining a pi...
12/11/2007
7037087Capacity control valve and control method therefor
An object of the capacity control valve is to provide a constant, stable control of the pressure load without fluctuations. Also another object is to improve an energy efficiency of the drive torque of the rotary shaft by means of a control of the pressure load. In ...
05/02/2006
6520208Fluidic device
In a fluidic device, a space (35) is formed in a passage block (26) to which a plurality of fluidic modules are connected and which is provided, in its inside, with fluid passages (43, 47, 51) for connecting the plurality of fluidic modules to one another...
02/18/2003
6269839Control member for a valve and method for determining fluid flow rate through a valve
A control member is rotatable to alter a control flow area of a primary flow path of a valve, with the control flow area being of a rectangular shape having a side defined by a wall of a valve interior, a side defined by a wall of a control member exterio...
08/07/2001
5609124Hot water tank cleaning device
A cleaning device is proposed for hot water tanks which each include near a bottom end thereof a drain pipe for allowing water contained in the tank to be flushed out therefrom. The present cleaning device comprises a first conduit adapted to be permanent...
03/11/1997
5591086Toy motion simulator and hydraulic control valve for use therein
A hydraulic control slide valve and toy motion simulating apparatus for imparting motion to an operator controlled by the hydraulic control slide valve to proportionally direct hydraulic fluid from pitch, roll, and yaw fluid nozzles to respective pitch, r...
01/07/1997
5499650Fluid control valve for a hydraulic system operating with variable viscosity, contaminated, fluid
Problems such as slow frequency response and low reliability when operating with contaminated fluids of variable viscosity are alleviated in a low pressure hydraulic system (10) which utilizes a single stage, electro-hydraulic, clevis-type pressure contro...
03/19/1996
5135369Device with orbiting valve having a seal piston
A closed center gerotor device wherein the sealing between the commutator for the device and the surrounding body is provided by a wave spring biased "O" ring sealed pressure operated piston....
08/04/1992
5133386Balanced, pressure-flow-compensated, single-stage servovalve
A hydraulic servovalve is controlled electrically through electromagnetic means. Electrical currents applied to force motors determine the relative position of a single, displaceable control assembly within the valve. Displacive movement of the control as...
07/28/1992
5108473Dust collector with atmospheric backflush
A dust collector based on filtration of dirty air in which the periodic backflushing of filtration elements is done by admitting atmospheric air at the filtration element exit port. The air is sucked backwards through the filtration element by the dust co...
04/28/1992
4924926Central tire inflation system
An air circuit for a central tire inflation system having a relief valve (158) in the air circuit to provide the necessary pressure drop for deflation and having make up air from a source (S) bleed into the air circuit via one of two normally closed solen...
05/15/1990
4917585Gerotor motor or pump having sealing rings in commutator members
A rotary valve for changing the connections of the fluid inlet passages and the fluid outlet passages of a Gerotor type fluid rotary machine in which the fluid is contracted and expanded by a plurality of cavities defined by the teeth formed on a stator a...
04/17/1990
4877383Device having a sealed control opening and an orbiting valve
A gerotor device is disclosed wherein the pressurized fluid is segregated to the area of the device near the orbiting valve by the sealing of the wobblestick drive connection to the valve. In the preferred embodiment shown this sealing is accomplished by ...
10/31/1989
4773439Changeover valve
There is described a valve having three ports (3,4,5) one of which (3 or 4) is selectively closed by a bistable toggle-action valve member (6). An actuating member (17) driven by a pressure sensor (23) operates the valve member via cooperating abutments (...
09/27/1988
4767294Power conversion device
A power conversion device which can efficiently convert between fluid pressure and rotary motion. The device includes a piston plate, which is surrounded by an array of pressure chambers and engageable with a shaft and its accompanying gear assembly. Mani...
08/30/1988
4754792Tire valve assembly for central tire inflation system
A tire valve assembly (56, 58) for a central tire inflation system (10) effective to automatically isolate a tire (12) pressurized to less than a predetermined minimum pressure from the remainder of the system is provided. The tire valve assembly includes...
07/05/1988
4715405Solenoid valve, particularly for apparatus for removing a milking set
This valve may be used for operating a removing apparatus for a milking set. It has such low energy comnsumption, that simple batteries may be used so that a cow-shed need not be provided with electric current conduits. It is characterized in that the val...
12/29/1987
4672989Flow conditioned nutation valving apparatus and method of operation
Structure and method are disclosed for providing timed valving in which a nutating plate having an opening defined therethrough moves relative to at least one other nominally static plate having a complementary opening defined therethrough, the nutating p...
06/16/1987
4665947Transfer switch for differential type actuators
A transfer switch for differential type actuators which includes a body having an internal space, a plurality of pairs of output ports connected with the internal space for supplying pressure to a plurality of differential type actuators, a flat control p...
05/19/1987
4640331Central tire inflation system
A central tire inflation system (10) comprising a pressure relief valve (180) fluidly interposed control means (142, 156, 164, 154, 172) and a tire valve assembly (56, 58) is provided. The control valve assembly is effective to selectively pressurize or e...
02/03/1987
4597403Nutation valving apparatus and method of operation
Structure and method for providing timed valving in which a nutating plate having an opening defined therethrough moves relative to at least one other nominally static plate having a complementary opening defined therethrough, the nutating plate at one po...
07/01/1986
4545563Pressure regulator valve
A pressure regulator valve having a housing defining an inner chamber with at least one inlet port and one outlet port disposed in communication with the chamber is provided with a solenoid operated valve arrangement within the chamber for alternately mov...
10/08/1985
4522233Multi-position plug valve
An improved multi-position plug valve is disclosed which greatly facilitates fluid flow control. In the preferred embodiment, the valve is adapted for connection with three individual pipes or conduits, and another main pipe or conduit. The valve includes...
06/11/1985
4466460Valve apparatus with improved means to prevent cross-venting
This invention relates to improved components for an automatic temperature control system for automobiles. The control system operates on the proportional stroke principle and comprises an in-car air sensing tube biased with ambient air; a sensor in an as...
08/21/1984
4449898Power transmission
A rotary valve for changing the connections of the fluid inlet passages and the fluid outlet passages of a Gerotor type fluid rotary machine in which the fluid is contracted and expanded by a plurality of cavities defined by the teeth formed on a stator a...
05/22/1984
4411190Energy translation device having individually compensated sliding valves and counterbalancing mechanism
Improved energy translation devices, such as fluid motors or pumps of the type including an orbiter member operatively coupled between a stator and a rotor, are disclosed which include an individually pressure compensated valving arrangement, telescopical...
10/25/1983
4381050Vacuum modulator arrangement for an automatic transmission
A vacuum modulator arrangement for an automatic transmission of a motor vehicle for use in conjunction with a diesel engine or other fuel-injection engine, includes a vacuum source, a brake booster, a vacuum modulator, a throttle modulator for controlling...
04/26/1983
4333390Balanced pivoted vane valve
A control member for supplying a pressure responsive device with pressurized fluid in response to an input signal. The control member has a housing with a chamber therein. The chamber is connected to a source of pressurized fluid through an entrance port,...
06/08/1982
4289126Pressure regulator for breathing apparatus
A pressure regulator for breathing apparatus which utilizes a low pressure control signal to control the inhalation of gases through the regulator. A first low pressure control valve is actuated by the diver's inhalation effort to provide a pressure signa...
09/15/1981
4126153Combined electrical switch and fluid power control device
The disclosed combined fluid power and electrical control device comprises a casing having an operating lever extending through an opening in the casing between the front and rear sides thereof, means at the rear of the casing pivotally supporting the rea...
11/21/1978
4057078Vacuum slide valve
A cam operated slide valve in which a metal plate lies on top of a horizontal stationary metal plate and is moved relative thereto by a two piece adjustable cam wheel. The moveable plate is pivoted to the stationary plate and is formed with a recess in it...
11/08/1977
3942555Electrical switch and fluid control device
A combined electrical switch and fluid control device is disclosed, for simultaneously performing electrical and fluid power control functions. For example, the device may be employed on an automotive vehicle for controlling the operation of electrical co...
03/09/1976
 
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