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Class 137/506 - Plural valves biased closed


Subclass of Class 137 - Fluid handling
Definition: Apparatus which include a plurality of biased closed valves
No. of patents: 17
Last issue date: 10/10/2006


NumberTitleIssue Date
7118088Fluid control valve
To provide a fluid control valve which is capable of preventing or suppressing degradation of the accuracy of flow rate control dependent on the lift amount of a valve element from a valve seat. An expansion valve is configured such that a valve portion and a valve ...
10/10/2006
6622743Surge prevention device
A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure oxygen cylinder and a medical pressure regulator. The valve also may be used for other purpo...
09/23/2003
6325088Buckling pin actuated, pilot operated pressure relief valve
The present invention provides a method, apparatus and system for using sacrificial buckling pin technology for a reliable actuated safety relief valve and for a pilot valve system. The buckling pin fails at a predicted, predetermined system pressure thro...
12/04/2001
6237623Nonsurgical intraurethral bladder control device
An improved self contained automatic bladder control device includes a valve assembly mount for releasibly receiving a valve assembly. The preferably cylindrical mount has a textured outer surface designed to interact with urethral tissue. Thus the mount ...
05/29/2001
5491976Vehicle emission air injection
A valve for an automotive vehicle emission system is provided which includes a valve housing with an inlet communicating the valve housing with an air pump; an outlet fluidly communicating the valve with a catalytic converter, the outlet having a check va...
02/20/1996
5301504Combination valve
A combination valve assembly, particularly for a secondary air blower in internal combustion engines with controlled three-way catalyzer, the combination valve assembly comprises a valve housing having a valve inlet and a valve outlet, a pneumatically act...
04/12/1994
4889154Automatic shut-off valve
An automatic shut-off valve having a lower closing pressure than an opening pressure comprises a housing having a partition formed with a valve opening connecting the inlet to the outlet, a valve member movable in the outlet side of the partition to an op...
12/26/1989
4699171Multiple port relief valve
In order to provide a multiple port relief valve which is pressure responsive in a highly effective manner so as to control communication between an inlet and a given outlet as a function of the prevailing fluid pressure, where the relief valve functions ...
10/13/1987
4648421Valve device for controlling liquid flow
A valve device for use in filling cartons includes a tubular housing containing a valve member comprising a closure part co-operating with a valve seat at the lower extremity of the housing, and a driving part movably received with clearance in the housin...
03/10/1987
4630642Check valve and water injection systems and fuel systems utilizing the same
For use in a turbocharger system wherein exhaust flow from the engine is caused to rotate an impeller and charge the intake of the engine with compressed air, a water injection system comprising a water reservoir, a first line connecting the reservoir to ...
12/23/1986
4566635Fuel injection nozzle for internal combustion engines
A fuel injection nozzle for internal combustion engines, having a valve needle, which at the end of a pre-stroke directly or indirectly opens an auxiliary conduit, by way of which the fuel pressure acts upon a reservoir piston and a pressure shoulder whic...
01/28/1986
4370102Fluid pumping device
A device for pumping fluid includes a main pump device and an auxiliary device integrally fixed thereto. The auxiliary device can function as a damper, cut-off valve, check valve and relief valve. The auxiliary device includes a first and second room sepa...
01/25/1983
4346734Locking device
A locking device to keep two spaced apart positionable heads in place. The disclosed locking device can keep two hex shaped adjustable relief valve heads (34,44) in place. The locking device (10) is punched out of a flat thin sheet metal plate. An elongat...
08/31/1982
4235211Fuel pressure regulator
A fuel pressure regulator for use in a fuel injection system for an internal combustion engine has a housing defining therein a fuel passage having upstream and downstream ends connected to a main fuel supply conduit and a fuel return pipeline, respective...
11/25/1980
4193418Arrangement for preventing excess pressure in the housing of shut-off valves
An arrangement for the prevention of excess pressure in housings of shut-off valves with varying pressure loads, in which an independent chamber is provided with two facing openings. These are connected by pressure lines to pipe sockets connected to the s...
03/18/1980
3993361Pressure protection valve and system
A pressure protection valve includes a housing having first and second ends. A passageway is formed in the housing for interconnecting the ends to permit fluid to flow from the first to the second end. Also, the housing includes a first portion of the pas...
11/23/1976
3976099Multiple-passage, quick-disconnect coupling
A rigid, multiple-passage, quick-disconnect coupling in which valves of a supply section of the assembly are moved to mechanically open valves in a receiver section for enabling pressurization of telescopic cylinder sections. Energization of the innermost...
08/24/1976
 
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