COCK VALVE

• US 3,582,040 A
• Filed: 07/18/1967
• Issued: 06/01/1971
• Est. Priority Date: 07/19/1966
• Status: Expired due to Term

• Current Assignee: Daniel Gutierrez
• Original Assignee: Daniel Gutierrez
• Inventors: Gutierrez, Daniel
• Application Number:
  US04/654,149
• Time in Patent Office: 1,414 Days
• US Class Current: 251/287
• CPC Class Codes: F16K 3/18 by movement of the closure members

Abstract

A cock valve comprising a cylindrical valve chamber completely closed at one end, and a composite plug within said chamber, said composite plug being provided with yieldable sealing means to seal against the cylindrical wall of the valve chamber, said plug having a diametral bore transverse to the length of said yieldable means to permit the flow of fluid through the valve in one position and to obstruct said flow in another position. The open end of the valve chamber is sealed by a valve cap forming a packing gland with the upper portion of the plug which is provided with a stem extending outwardly of said valve cap to enable the operation of the valve by turning it to the proper position. The yieldable sealing means comprise a solid body of an elastomeric material forming an insert in the plug, or a pair of elastomeric members biased outwardly of the plug by means of a spring device, or a hollow cylindrical member of an elastomeric material surrounding the plug and biased outwardly at a portion thereof by the spring means.

Claims

1. A cock valve comprising a valve body;

inlet and outlet ducts extending outwardly of said body;

a cylindrical valve chamber within said valve body;

a cylindrical valve plug within said valve chamber;

a valve stem for actuating said valve plug;

a valve cap closing said valve chamber;

a packing member within said valve cap such that said valve cap will act as a packing gland in cooperation with said valve plug and the valve stem, the latter extending outwardly of said valve cap through an opening thereof, said valve plug being a cylinder having an undercut at its lower end so as to form a bifurcated portion and a cavity within said plug bounded by the thus formed bifurcated portion of the plug and by the inner walls of said valve chamber; and

yieldable sealing means within said cavity, said yieldable sealing means comprising a solid elastomeric member filling the cavity of said plug, said member having free ends with a contour with a radius of curvature identical to that of the valve chamber, said elastomeric member being of a length slightly larger than the diameter of said valve chamber so as to exert pressure against the inner wall of the valve chamber to effect a sealing action thereagainst, said cylinder and elastomeric member having aligned diametral bores extending perpendicular to the axis of the cylinder such that, when the valve is in the open position, said bores will provide unobstructed communication between the inlet and outlet ducts and, when in the closed position, said bores will be isolated from said ducts and said elastomeric member will yieldably seal at least one of the inlet and outlet ducts to prevent passage of the fluid through the valve.

2. A cock valve according to claim 1 wherein said solid elastomeric member is provided with a centrally arranged depressed portion intermediate the free ends thereof and through which said bore in the elastomeric member passes.

3. A cock valve according to claim 1 comprising a device for indexing and fixing the open and closed positions of the valve, said device comprising an incomplete metal ring having an outer diameter slightly larger than the diameter of said valve chamber and introduced therewithin under pressure to lay directly over the bottom of said valve chamber, said ring spanning an angle slightly less than 270*, the bifurcated portion of said cylindrical plug including a downwardly extending tab to enter into the cavity foRmed between the incomplete ring and the bottom of the valve chamber, thus serving as a stop for the closing and opening positions of the valve.