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Patent No. 6711769

Pillow with retractable umbrella

A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.

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Class 137/906 - VALVES BIASED BY FLUID "SPRINGS"


Subclass of Class 137 - Fluid handling
Definition: Art collection drawn to valves biased by fluid "springs".
No. of patents: 71
Last issue date: 06/17/2008


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NumberTitleIssue Date
7387659Pneumatically operated automatic shutoff circuit for controlling the generation of gas
An automatic shut off circuit for controlling the flow of a gas through a gas separation system is disclosed. The gas separation system includes a gas separation module for separating nitrogen from air, and a non-electric automatic shut off circuit for controlling t...
06/17/2008
7370615Variable valve actuator
Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine ...
05/13/2008
7357150Safety shut-off device
A safety shut-off device for sections of fluid circuits, which in case of damage or the like, have to shut off from each other on safety considerations. The safety shut-off device includes at least two valves connected to each other via a control chamber. A first pr...
04/15/2008
7290509Variable valve actuator
Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine ...
11/06/2007
7258133Pressure reducing valve
A pressure reducing valve comprises a valve support member provided with a water passage, a valve seat fitting on the portion of the valve support member primary side relative to the secondary side end of the water passage, a cup-shaped valve body fitting on the sec...
08/21/2007
7213549Variable valve actuator
Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine ...
05/08/2007
7156058Variable valve actuator
Actuators, and corresponding methods and systems for controlling such actuators, provide independent lift and timing control with minimum energy consumption, while supplying sufficient supplemental energy to overcome friction. In an exemplary embodiment, an actuatio...
01/02/2007
7093605Pressure control device for a pipeline
A pipeline assembly for transporting a fluid such as oil, gas and water along a fluid path extending in the pipeline has a pressure control device incorporated therein. The pressure control device regulates the pressure of the fluid downstream the pressure control d...
08/22/2006
6978799Emergency pressure relief valve with enhanced reset
A pressure relief valve has a housing fluidly connected to a pressurized system line carrying a system fluid. The housing carries a moveable piston and a valve member that both move between closed and open positions. The piston defines an upper chamber and a lower c...
12/27/2005
6959797Piston-cylinder assembly with braking device
In a piston-cylinder assembly comprising a cylinder in which a piston rod is installed with freedom of axial movement and which is filled with a blocking medium, a braking device becomes active when the piston-cylinder assembly moves faster than a defined speed and ...
11/01/2005
6772791Directly operated pneumatic valve having an air assist return
A direct operated valve assembly is provided including a valve body having a pressurized inlet port in communication with a source of pressurized air, a cylinder port, a valve bore extending axially within the valve body, and a valve member supported within the valv...
08/10/2004
6675751Two-mass bi-directional hydraulic damper
A hydraulic damper for an automotive engine electromechanical cylinder valve 20 is provided. The hydraulic damper includes an inner piston 130 which is slidably mounted within an outer piston 110. The outer piston is slidably mounted within an interior hy...
01/13/2004
6601552Hydraulically controllable globe valve
A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end position in the direction of a second end position. Pressur...
08/05/2003
6589350Vacuum processing chamber with controlled gas supply valve
An apparatus for and a method of introducing a gas into a vacuum processing chamber are provided. In one aspect, a processing apparatus is provided that includes a vacuum processing chamber, a first source of gas coupled to the vacuum processing chamber, ...
07/08/2003
6502803Valve for controlling liquids
A valve for controlling fluids is embodied with a piezoelectric actuator (3) for actuating a valve member (2) that on one end has a valve head (7), forming a valve closing member, that cooperates with a seat (8) provided on the valve body (6) for opening ...
01/07/2003
6494231Valve device
A valve device for low-viscosity to high-viscosity fluids, especially for fluid plastic components of plastic mixtures consisting of one or more components, with a valve housing having a fluid inflow and a dosaging valve, which has a dosing nozzle that ca...
12/17/2002
6491007Hydraulically controllable globe valve
A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end position in the direction of a second end position. Pressur...
12/10/2002
6240956Remote controlled drinker system
A poultry drinker system includes a number of drinker lines each supplied from a common high pressure water supply through a water pressure regulator. Each regulator includes a reference spring establishing a default minimum water pressure. A centralized ...
06/05/2001
6161573Air pressure regulator
The present invention relates to an air pressure regulator, characterized in that a regulator made of a piston body connected with a return spring is disposed at the top of a main body, wherein the high-pressure gas flowing from the primary pressure chamb...
12/19/2000
6035889Low cost absolute pressure controller for plenum pressure regulation
A low cost diaphragm actuated absolute pressure regulator. The regulator comprises a housing having first and second sections that are secured together. The first section has a cavity and a diaphragm that seals the cavity and first section of the housing....
03/14/2000
6019121Pressure reducing valve
A pressure reducing valve 30 comprises a body unit 32, a bonnet unit 36, and an operating unit 38 having a handle 126. The pressure reducing valve 30 further comprises a first diaphragm 84, a second diaphragm 86, a third diaphragm 100, and a fourth diaphr...
02/01/2000
5954484Sewage lifting station
A sewage lifting station having at least two solid waste collection chambers for receiving pumped solid waste-contaminated sewage. The station has a collection tank for receiving pre-treated waste water flowing from the solid waste collection chambers via...
09/21/1999
5937895Fail-safe delivery valve for pressurized tanks
The present invention uses a regulator in the form of dispensing check valve and a flow restriction arrangement to provide a virtually fail safe system for preventing hazardous discharge of fluid from a pressurized cylinder or tank. A diaphragm controls t...
08/17/1999
5934318Valve system
The invention relates to a valve system for a space (1) which is under vacuum in relation to its surroundings (3), which valve system comprises a valve unit (7) which is intended to be arranged in association with a wall (2) which delimits the said space ...
08/10/1999
5819778Flow control device of power steering system
In a power steering system which has a fluid pump and a hydraulic actuator, there is used a flow control device which comprises a spool unit slidably received in a spool receiving bore in a manner to partition the bore into first and second pressure chamb...
10/13/1998
5819777Flow control device
A flow control device or valve used in a power steering system of an automotive vehicle. The flow control device comprises a housing formed with an axially extending hole in which a spool valve is movably disposed. A first pressure chamber is defined in t...
10/13/1998
5809950Hydraulic valve control arrangement
In a hydraulic valve control arrangement particularly of an internal combustion engine wherein the valve has a valve stem by which it is supported so as to be slideable between a closed and an open position and first there are provided first spring means ...
09/22/1998
5765515Controllable hydraulic valve operating mechanism
In a hydraulic operating mechanism for a valve which comprises a valve stem with first spring means acting on the valve stem in the valve closing direction, and second spring means acting at least intermittently on the valve stem in a valve opening direct...
06/16/1998
5730182Pressure compensation valve
A pressure compensation valve is constructed with a valve establishing and blocking a communication between an inlet port and an outlet port, a pressure receiving chamber, a piston driven by a load pressure within the pressure receiving chamber and shifti...
03/24/1998
5694975Pressure regulator
A pressure regulator includes a housing having a chamber that receives a pressure responsive member 30. The pressure responsive member 30 includes an internal charge 90 that allows a movable portion 68 of the regulator to react in response to pressure dif...
12/09/1997
5595148Hydraulic valve control device
The invention relates to a freely activatable hydraulic valve control device for a stroke valve, which valve control device is arranged particularly in an internal-combustion engine. The stroke valve includes a valve stem and a first spring acting on the ...
01/21/1997
5549107Second stage scuba diving regulator
An improved second stage regulator employs a pneumatically-activated anti-set poppet and inhalation resistance adjustment control knob accessible externally of the regulator. The anti-set poppet utilizes a pressure-activated compression spring to seal the...
08/27/1996
5409040Springless pilot operated sequence valve
A two-position, three-way pilot valve having a hollow spool valve element connected to a valve stem having first and second ends of equal diameter for pressure balancing the valve. A biasing piston engages one end of the valve stem and a pilot piston enga...
04/25/1995
5323807Stop drop valve
A check valve having a reduced or zero pressure drop and more particularly such a valve in combination with a spray nozzle. The check valve includes a sealed gas chamber which has within it a closed-cell foam element which insures that some gas remains in...
06/28/1994
5280804Control valve
This invention is intended to control the flow rate and pressure in a valve body by operating a throttling valve connected to the opening of the valve body by a remote pipe. The construction of the control valve is as follows: A spool type pressure compen...
01/25/1994
5271428Adjustable differential pressure valve
An adjustable differential pressure valve that controls the pressure of a input fluid by maintaining a pressure differential between the fluid and another fluid, or fluids, of reference pressure, acts as a bypass valve and allows the pressure differential...
12/21/1993
5265645Surge reliever relief valve
A surge reliever relief valve is provided in which a flexible membrane is maintained in a peripherally sealed relationship across a rigid grid. The grid bounds the laterally adjacent intake and output regions of the valve. Intake pressure extends the memb...
11/30/1993
5253619Hydraulically powered actuator with pneumatic spring and hydraulic latching
A hydraulic actuator includes a pneumatic piston, a hydraulic piston, and an engine valve on a common shaft. The pneumatic piston is urged between first and second stable positions primarily by a double acting pneumatic spring, with high pressure hydrauli...
10/19/1993
5253669Controlling process gas flow
A method and apparatus for controlling the pressure to the bonnet of a pressure regulator, wherein two solenoid valves in combination with a buffer tank and a microprocessor to control the solenoid valves. When the pressure within the regulator bonnet exc...
10/19/1993
5193575Adjustable differential pressure valve
An adjustable differential pressure valve that controls the pressure of a input fluid by maintaining a pressure differential between the fluid and another fluid, or fluids, of reference pressure, acts as a bypass valve and allows the pressure differential...
03/16/1993
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