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Class 251/337 - Springs and spring retainers


Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter including valve springs and means for mounting
No. of patents: 333
Last issue date: 12/27/2011


1                  
NumberTitleIssue Date
8083209By-pass valve for heat exchanger
A valve that includes a housing defining first and second bores having a central axis, and a peripheral valve seat. An actuator is located in the first bore and has a reciprocating seal disposed for movement along the central axis for engaging the valve seat and clo...
12/27/2011
7722010Valve holding member
A valve holding member made of a sheet metal includes a hub part (33) having a guide hole (34) through which a valve stem (23) and a plurality of arm parts (32) formed at the peripheral edge of the hub part. The arm parts are extend from ...
05/25/2010
7575221Adjusting device and pressure relief valve
There is disclosed an adjusting device for a valve, especially a pressure control valve, comprising an axially displaceable control member on which a control spring acting on a valve body of the valve is supported. The control member is in rotational engagement with...
08/18/2009
7566046Valve spring plate with two supporting tongues
A spring plate for a valve spring of an internal combustion engine, which spring plate can be connected directly to the valve stem of a charge changing valve while engaging an annular groove in the valve stem. An annular disc is arranged on the valve spring and two ...
07/28/2009
7472888Valve holding member
There is provided a valve holding member for holding a valve of a pipe coupling. The valve holding member includes a hub part 33 having a guide hole 34 for a valve stem, two arm parts 32 diametrically opposing each other on the peripheral edge o...
01/06/2009
7458561Spool valve apparatus
A spring seat, which contacts a spool, is provided between a compression coil spring and the spool. The spring seat is shaped into a cup-shaped body, which includes a cup tubular section, a cup flange section and a cup bottom section and is fitted to a distal end sh...
12/02/2008
7422194Solenoid valve, e.g. a tank-vent valve for tank ventilation in motor vehicles
A solenoid valve, such as, for example, a tank-vent valve f or tank venting in motor vehicles, includes at least one valve orifice forming a sealing seat, and a valve member, which cooperates with the sealing seat for releasing and closing it, the valve member being...
09/09/2008
7367354Check valve
A check valve includes a housing formed with a valve hole through which fluid flows, a valve seat formed on the peripheral wall of the valve hole, a valve element disposed in the valve hole to be movable between a valve closed position where the valve element makes ...
05/06/2008
7353842Air fitting with an integral check valve
An air fitting with an integral check valve includes a housing having an inlet and at least one outlet, a passage extending between the inlet and the at least one outlet with a valve seat being formed in the passage adjacent the at least one outlet with a portion be...
04/08/2008
7341108Well downhole liquid dispenser
A well downhole liquid dispenser is disclosed in which an inlet/discharge port assembly is provided having an inlet port in fluid communication with the shoulders of a conical piston. The point of the conical piston is in physical contact with the discharge channel ...
03/11/2008
7337796Safety relief valve having a low blow-down value and spring therefore
A safety relief valve is provided that comprises a body comprising a chamber therein and an inlet and an outlet, the inlet comprising an inlet valve seat; a disk member closeable on the inlet valve seat; and a mechanism in the body biasing the disk member to rest on...
03/04/2008
7331361Pressure relief valve with direct hydraulic damping
To protect hydraulic assemblies, in particular to protect hydraulic brace systems, pressure relief valves 1 are used, the closing part 10 of which is formed by a piston 15, which is connected to the connection 4, and the valve spring reta...
02/19/2008
7331398Multi-drop flow control valve system
A multi-drop flow control valve system having a plurality of hydraulically actuated flow control valve, each valve set in an initial operating position. The flow control valves are connected to a hydraulic control line in sequence, wherein the second flow control va...
02/19/2008
7328883Damper assembly exploiting a crankshaft
A coupling release component for releasabley coupling a shaft of a motor to a further shaft for rotation of the further shaft by the motor shaft having a rotation lock component having an axially disposed first gripping device for connecting the lock to the shaft fo...
02/12/2008
7318913Fluid exchange in a chamber on a microscope slide
A sample chamber is formed by a housing sealed against a microscope slide. The housing has fluid ports, including a well formed over at least one port. In a rinse station, rinse solution is drawn from a reservoir through the chamber to a waste reservoir. At a fill s...
01/15/2008
7316240Exhaust system and mini-exhaust static pressure controlling apparatus thereof
An exhaust system and a mini-exhaust static pressure controlling apparatus thereof for controlling a process area. The mini-exhaust static pressure controlling apparatus has an exhaust chamber and an auto release damping device. The exhaust chamber has an air inlet ...
01/08/2008
7316383Valve mechanism, especially fuel injection valve for an internal combustion engine
A fuel injection valve for an internal combustion engine, includes a valve element whose switched position depends at least indirectly on the switched state of a piezoelectric actuator that is acted on by a tubular, largely cylindrical prestressing device, which is ...
01/08/2008
7316386Valve stem seal assembly
A valve stem seal assembly having a retainer body that includes an annular interior passageway defined by a wall is disclosed. At least one internal sprue extends between top and bottom ends of the retainer body and are formed within the wall. A channel is concentri...
01/08/2008
7309032Dosing device for fluids, especially a motor vehicle injection valve
An actuator (4) is connected, on one side, to a valve needle (3), and on the opposite side, to a hydraulic piston (6) pertaining to a hydraulic length compensator. A working chamber (5) is divided by a tight separating membrane (9)...
12/18/2007
7290562Non-return valve
What is disclosed is a non-return valve comprising a sealing piston which is biased against a valve seat in the basic position inside a valve housing, and which is manufactured by a plastics injection molding technique. ...
11/06/2007
7287546Simple structure of fuel pressure regulator designed to minimize pressure loss
A fuel pressure regulator for use in internal combustion engines. The fuel pressure regulator includes a valve seat and a vale body disposed downstream of the valve seat and is designed to move the valve body away from the valve seat through the pressure of fuel app...
10/30/2007
7284565Fluid flow regulator for swimming pool cleaning system
A fluid flow regulator useful with swimming pool suction cleaners includes a flow passage conduit for connection between a suction pump and the pool cleaner. A flow bypass conduit is connected to the flow passage conduit for injecting an ambient fluid into a bypass ...
10/23/2007
7275561Discharging valve assembly of reciprocating compressor
A discharging valve assembly for a reciprocating compressor includes a discharging cover coupled with a front frame so as to cover a cylinder in which a piston is inserted; a discharging valve inserted in the discharging cover, and opening/closing an inner space of ...
10/02/2007
7273026Roller follower body
The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i...
09/25/2007
7270147Adjustable variable flow fertilizer valve
A valve assembly comprising a body member forming a channel having first and second ends, forming a seat surface within and at the first end of the channel about an orifice that faces in the direction of the second end, the channel forming a first coupler at the sec...
09/18/2007
7258136Pressure regulator
A pressure regulator for regulating fuel pressure in an internal combustion engine, containing a valve including a closing member forced into a valve seat by the action of an angularly shaped valve leaf spring one arm of which is braced on the closing member and the...
08/21/2007
7258135Pressure regulator for a fuel supply system of an internal combustion engine
A pressure regulator for a fuel supply system of an internal combustion engine for regulating a fuel pressure, including a valve, having a valve ball forced against a valve seat into the closing position by the action of a valve leaf spring. With the valve open, at ...
08/21/2007
7240893Normally closed solenoid valve
A normally closed solenoid valve includes a fixed core, a valve portion including a valve seat and a valve body, a movable core disposed between the fixed core and the valve seat, a resilient biasing member for biasing the movable core in a valve-closing direction a...
07/10/2007
7204668Panel fastener with spring retaining ring
A fastener assembly having a bolt having a shaft and a nose portion at its terminal end. A ring is mounted on the bolt. The ring is an elongated piece of resilient material curving from a first end about the bolt shaft, then curving back around to a second end adjac...
04/17/2007
7201122Device for controlling valve kinematics
A device for controlling the variation of the opening and closing times and durations of a valve (8) comprises an elastic means (18) acting upon an assembly consisting of a lever device (1) and a valve stem (11) not in the closing directi...
04/10/2007
7195032Unidirectional, adjustable flap valves
The invention provides a flap valve for controlling the air pressure within a protected space defined by walls, the flap valve including a valve frame attachable to an opening made in the walls, a valve flap, articulated at least indirectly to the frame and being su...
03/27/2007
7178787Valve assembly
An improved valve assembly (100) includes a primary spring (142) which extends along a valve stem (144). A spring retainer (150) holds the primary spring (142) on the valve stem (144) and has a thread convolution (152...
02/20/2007
7168446High impact discharge valve
A check valve for use in a pump. The valve is arranged to be subjected to severe service conditions and high impact loads, yet be resistant to damage to its components. The check includes a body, a valve seat, a poppet and an impact cushion. The poppet is movably co...
01/30/2007
7163187Non-sliding valve
A solenoid valve moves an armature back and forth between valve open and valve closed positions without the armature having any sliding engagement with any fixed valve part. This is accomplished by supporting the armature with a spring having one periphery engaging ...
01/16/2007
7159843Non-sliding valve
A solenoid valve moves an armature back and forth translationally between valve open and valve closed positions without the armature having any sliding engagement with any fixed valve part. This is accomplished by supporting the armature with a spring having one per...
01/09/2007
7159613Pressure limiting valve in a hydraulic machine having a pressure limiting valve
In the housing 1 of a hydraulic machine, the pressure Pi acts in the chamber 2. For this purpose, a passage opening 4 is provided, which is formed as a valve seat 5. A valve body 6 can be displaced longitudinally in the housing ...
01/09/2007
7146872Micro manipulator
Provision of a 3-DOF micro manipulator easy to operate and capable of executing accurate positioning, wherein the link mechanisms of the micro manipulator whose main operation is parallel 3-DOF operation are implemented by cutting, folding, and moding a sheet of met...
12/12/2006
7140337Valve gear mechanism
In a valve gear mechanism of an internal combustion engine, there is provided a valve opening and closing a combustion chamber, a spring device which generates a force pressing the valve toward a valve seat, a drive mechanism driving the valve in an opening directio...
11/28/2006
7134410Detachable connection for coupling a gas exchange valve of an internal combustion engine to an actuator
Disclosed is a simple, easy-to-produce, and reliable connection between a shaft of a gas exchange valve and an actuator. This connection is detachable and, as a result, can be connected and disconnected multiple times. It is also possible to dispose the coupling pie...
11/14/2006
7121527Intercept valve for spray guns for water cleaner apparatus
The spray gun is subdivided into a first body (4), in ternally of which a cavity (6) is afforded, and a second body (5) which is perpendicular to the first body (4) and internally afforded a through hole (25) communicating with the...
10/17/2006
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