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Class 251/79 - Overload release


Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter wherein the lost motion between the actuator
No. of patents: 9
Last issue date: 10/03/2006


NumberTitleIssue Date
7114697Fast valve actuator and tool provided with same
The invention relates to a quick-acting valve actuator comprising: a driven member (31) driven by a drive device (35) suitable for causing the driven member (31) to travel along a stroke (C1) to a trigge...
10/03/2006
6138715One-piece ballkey
A valve wherein the stem and valve element are a unitary structure and the stem includes a weakened section adjacent the exterior of the body. Preferably, the unitary structure is a one-piece molded plastic structure. The weakened section is exterior of t...
10/31/2000
5152498Valve handle with overload protection
A valve has a housing, a valve spindle projecting outward from the housing and centered on and rotatable about an axis, and an actuating handle. Radially inwardly projecting and axially extending ridges are formed in the handle. An overload protecting cou...
10/06/1992
4853160Apparatus for adjusting a variable length valve member for a needle valve
A carburetor including a valve apparatus comprising a wall defining a chamber having an axis and having therein an inlet communicating with the chamber and an outlet communicable with the chamber and having a valve seat, a valve member having two opposite...
08/01/1989
4619437Adjustable torque limiting valve handle
Disclosed is a torque limiting valve handle having one more independently adjustable spring loaded balls urged in contact with depressions formed in the inside surface of a housing adapted for external manual engagement. The adjustment of the torque limit...
10/28/1986
4160484Surface control well safety valve
A well safety valve for controlling the fluid flow through a well tubing in which the valve is biased closed. When fluid control pressure is supplied from the well surface, the valve is opened, but the valve closes when the control pressure exceeds a pred...
07/10/1979
4077473Well safety valve
A well safety valve for controlling the fluid flow through a well tubing in which the valve closure member is controlled by a longitudinal movable tubular member which opens and closes the valve, can lock the valve in an open position, can telescopically ...
03/07/1978
4063707Valve protective mechanism for power operated valves
A protective mechanism is provided for valves having a nut through which a power-driven valve stem is threaded. The mechanism functions to protect the valve seat against the continuation of thrust of the valve-stem closure element against the valve seat a...
12/20/1977
3981358Well safety valve
In a well safety valve for controlling the fluid flow through a well tubing in which the valve closure means is controlled by a longitudinal movable tubular member, the improvement of a fail-safe mechanism for avoiding damage to the valve by avoiding exce...
09/21/1976
 
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