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Class 251/66 - BIASED TRIP


Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter wherein the valve is provided with a biasing
No. of patents: 43
Last issue date: 04/01/2008


1    
NumberTitleIssue Date
7351127Liquid crystal dispensing apparatus
A liquid crystal dispensing apparatus having a multipart, separable needle that can be easily repaired should the needle becomes distorted or damaged. ...
04/01/2008
7163186Quick-closing valve for the interruption of a fluid flow
A valve housing 1 with valve seat 10 incorporated in a fluid line features a closing element 2 with a valve disk 11 and a valve stem 12 extending through and sealed in the housing wall which, on the outer side, is locked by means o...
01/16/2007
7140379Cross-over prevention valve
A valve mechanism which is resiliently biassed towards a first position but is normally retained in a second position by means of a linkage including a chemically sensitive device which is arranged to release in the presence of a contaminant. ...
11/28/2006
7048251Valve with removable actuator
A valve assembly includes a valve body and a valve actuator which is releasably engageable with the valve body. The valve body has an internal cavity within which a valve member is located, and a valve stem is interconnected with the valve body and is accessible fro...
05/23/2006
6837474Electrically operated remote trip mechanism and method
A mechanism and method for controlling an external member, such as the shut off valve of a steam turbine, from a remote location according to which latching and tripping devices are connected to the plunger of a solenoid so that the control of the external member is...
01/04/2005
6811459Liquid crystal dispensing apparatus
A liquid crystal dispensing apparatus having a multipart, separable needle that can be easily repaired should the needle becomes distorted or damaged. ...
11/02/2004
6789561Excess-flow valve
An automatically operating valve for use for example in a forecourt fuel pump has a body (10) defining a flow passage (20) within which is formed a valve seat (22), the body having a weakened zone (16) around the flow passage (20) ...
09/14/2004
6772992Memory cell structure integrated on semiconductor
This invention relates to a memory cell which comprises a capacitor having a first electrode and a second electrode separated by a dielectric layer. Such dielectric layer comprises a layer of a semi-insulating material which is fully enveloped by an insulating mater...
08/10/2004
6722623Multi-stage pedal valve structure
A multi-stage pedal valve structure relates to a flow regulator on the valve opening located between the two compartments inside the body of the one-way pedal valve. The device includes a valve jacket, a piston rod, a graduating disc and a spring, while the valve ja...
04/20/2004
6354320Acceleration sensitive shut off valve for firefighting equipment
A firefighting monitor having an acceleration sensitive shut off valve that responds to acceleration of the monitor to reduce water flow through the monitor. The acceleration sensitive shut off valve is self-contained and requires no contact with an exter...
03/12/2002
6274885Active matrix display device with TFTs of different refractive index
In producing a semiconductor device by annealing with laser light irradiation, while a linear laser light is scanned in a direction perpendicular to a line, the annealing is performed for a semiconductor material. In this state, since an anneal effect in ...
08/14/2001
6269830Extended area thermal activation device
A method for protection of a object subject to damage under thermally hazardous conditions having a triggerable safety appliance in which an elongated shaped memory alloy material having a first end and a second end is extended over an entire area to be p...
08/07/2001
6047731Pressure fitting, in particular a pressure relief and safety valve
The invention relates to a pressure fitting (1) having a flow channel (42), a valve cone (5), a sliding element (43), and a locking device (12). The sliding element (43) is disposed displaceably along a main axis (41) of the pressure fitting (1). The valv...
04/11/2000
5788212Pressure relief device with shaped memory alloy thermally activated trigger
A pressure relief device that is thermally triggered by a shaped memory alloy element. The pressure relief device has a valve body with a passageway that is exposed on one end to a high pressure fluid and on another end to a low pressure fluid. A closure ...
08/04/1998
5713387Conduit fluid containment system with automatic shut-off
This invention relates to a conduit that is at least partially encased within a containment housing. The containment housing provides structure for containment of fluids from a leaking or totally failed conduit and for automatically shutting off the flow ...
02/03/1998
5593092Monitor with safety valve
Apparatus including a monitor and a portable ground base comprising a liquid-carrying conduit having an inlet end and an outlet end. The inlet end is adapted to receive a liquid (such as water) from a supply, and the outlet end is attached to the intake o...
01/14/1997
5482074Safety cut-off device for piping systems and the like
A safety cut-off device, comprises a valve for controlling fluid flow. The valve has a body with a passageway therethrough and inlet and outlet communicating with the passageway. The valve includes a closure member disposed within the passageway, the clos...
01/09/1996
5184683Sprinkler head
A sprinkler head wherein an engagement face for engagement by a locking member is formed on the inner surface of an inwardly raised portion of a frame, and locking protrusions are formed on the upper and lower sides of the engagement face for preventing d...
02/09/1993
5119841Safety shut off apparatus
A shock or vibration activated safety shut off apparatus includes a housing, an ON/OFF member drive mechanism, a first member movable rectilinearly from a first position to a second position, a second member movable rectilinearly from a third position to ...
06/09/1992
5113891Water freeze guard valve
A water freeze guard valve having a water-filled actuator chamber and a linkage assembly for transmitting linear expansion movement, caused by ice formation within the actuator chamber, to force a poppet disc against the seat of the valve supply port and ...
05/19/1992
4971094Safety valve system
A valve includes a housing having an inlet, an outlet, and a passageway that connects the inlet and the outlet in fluid communication. A valve member on the housing for opens and closes the passageway and an actuator on the housing that is responsive to m...
11/20/1990
4940292Rapid release valve mechanism
A motor driven ball valve may be driven in two modes of operation; those modes are a normal or testing mode and an emergency mode. The ball valve, when in its full open position, has an air passage that allows for the rapid exhaust of air in the air pipe ...
07/10/1990
4911029Shock responsive actuator
A shock responsive device for automatically actuating a valve or other controlled unit in response to earthquake forces, including a weight which is displaceable from a pedestal or other support by shock forces, an element at a first side of the support a...
03/27/1990
4903720Safety shut off device
A shock activated shut-off device which can be used in any position includes a housing, a drive member rotatably mounted within the housing, a first member movable rectilinearly from a first position to a second position and a second member movable rectil...
02/27/1990
4887630Pneumatic control system for air handling system damper
A damper for an air handling system in which the blade or blades are normally positioned to permit air to flow through the damper by a pneumatic cylinder which, when pneumatically actuated, overcomes the force of a spring within the pneumatic cylinder whi...
12/19/1989
4878646Pinch valve mechanism for a parenteral infusion system
A pinch valve mechanism for a parenteral infusion system is provided which includes a spring-loaded pinch valve. The pinch valve is manually latched to its open position. A bobbin and cam mechanism includes a length of wire which contracts when a current ...
11/07/1989
4848388Emergency valve with test capability
Self actuating valve systems for fluid line networks comprising a main valving stem (3) with a driving-to-close bias spring (14) which is blocked by a detent ball (15) from closure against a valve seal (8), the ball itself being held by a removable pilot ...
07/18/1989
4688592Earthquake tremor responsive shut off valve
An earthquake tremor responsive valve closing assembly that includes a magnetically suspended pendulous weight adapted to be dropped upon a cocked trigger assembly for an internally spring biased gas line valve in response to a decrease in magnetic retent...
08/25/1987
4635670Heat sensitive valve
A heat sensitive valve including a body having an inlet, an outlet, a valve chamber and a valve seat surrounding the opening between the inlet and the outlet, a bonnet connected to the body with a bore therethrough in communication with the valve chamber,...
01/13/1987
4625762Auto-fill flow valve
An auto-fill flow valve for use in providing valving action in a conduit, the valve having a releasable locking mechanism which prevents the valving element from moving to seat against the valve seat until the locking mechanism is released. Also provided ...
12/02/1986
4587859Seismic trigger
An apparatus which is provided for closing a fluid valve in response to initial movement, as for example caused by a seismic disturbance, which is removably mountable to existing inline valves, such as gas valves. The apparatus includes a trigger which is...
05/13/1986
4537386Engine shutdown valve
An engine shutdown valve comprises a substantially circular gate valve movable about an axis between open and closed positions within a valve housing mounted in an engine induction manifold. A gate lever connects the gate valve with the axis and a movemen...
08/27/1985
4503675Fail-safe actuator with fusible link
An apparatus for moving a controlled member, as for example a valve, to a predetermined position in response to temperature conditions includes a bearing member which overcomes a force exerted by an energy storage device within a predetermined temperature...
03/12/1985
4448355Watering pistol
A pistol for dispensing a watering liquid to plants and the like has a crenellated pistol grip portion, the crenellations whereof are a latching member for a swinging pawl which is actuated by a handle, an upper projecting portion of said handle having al...
05/15/1984
4429704Shock responsive rotary actuator
A device for turning a valve stem or the like between two positions in response to earthquake forces or other shock forces, and including a member which is spring urged rotatively in a predetermined direction relative to a body structure and which has a l...
02/07/1984
4357972Water glass filler
A water glass filler allows single-handed operation for either flow-on-demand or continuous flow operation. Manual actuation of a control button, using the same hand which concurrently holds the glass against a swing arm, changes on-demand flow into conti...
11/09/1982
4289039Release mechanism for a valve of a fire extinguishing installation
A release mechanism for opening a valve of a fire extinguishing installation by means of a linearly movable release element, such as a release plunger or release pin upon releasing a pre-stressed helical spring. At one end of the helical spring there is a...
09/15/1981
4261379Vibration/temperature sensitive valve operating apparatus
A valve shutoff mechanism for automatically operating a gas valve, a liquid valve or the like to shut off the flow of fluid in a pipeline in response to an earthquake, temperature changes and/or an electrical or mechanical signal generated by an associate...
04/14/1981
4252143Actuator
There is disclosed a testing system employing a circulating tool, a cushion valve, a seal unit packer with a foot sleeve, and a landing nipple with a transducer fitting. This system permits running a packer with a foot sleeve and transducer fitting and la...
02/24/1981
4161183Vibration sensitive valve operating apparatus
A vibration sensitive valve operating device capable of being tuned to vibrations of predetermined magnitude, such as earthquake-type vibrations of a magnitude causing serious threshold structural damage, and incorporating a latch assembly and triggerable...
07/17/1979
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