Indicators for valves
AssigneeCyrus Shank Corporation
InventorFrank P. Kruppe, III
Life of this patent
Estimating the term…
Abstract
An indicator adapted to provide a visual indication of an over pressure situation in a system. The indicator (also referred to as a pop indicator), includes a main body, a piston that is disposed in the main body, and one or more O-rings disposed around the piston. Initially, the piston is in a first position where the piston is retracted into the body. However, when an over pressure situation occurs, the pressure causes the piston to move in a direction out of the main body against a friction force created by the O-ring. When the piston is moved, i.e., popped, then end of the piston extending out of the body provides a visual indication.
Claims20
An indicator adapted to be coupled to a valve, the indicator comprising:
- a body having opposing first and second body ends, wherein the second body end is adapted to be coupled to the valve;
- a bore extending through the body between the first and second body ends;
- and
- a piston having opposing first and second piston ends, wherein the second piston end is disposed in the bore, and the piston is movable between a retracted position, wherein the first piston end is disposed proximal to the first body end, and an extended position, wherein the first piston end extends outwardly from the body.
An indicator adapted to be disposed in a pressurized system, the indicator comprising:
- a body having opposing first and second body ends, wherein the second body end is adapted to be coupled to the system;
- a bore extending through the body between the first and second body ends and in fluid communication with the system;
- and
- a piston having first and second piston ends, wherein the second piston end is disposed in the bore, and the piston is movable between a retracted position, wherein the first piston end is disposed proximal to the first body end, and an extended position, wherein the first piston end extends outwardly from the body.
Dependencies are inferred from the claim text.