Pressure actuated safety device

Details Pressure actuated safety device Pressure actuated safety device

1979-06-28

1981-06-02

Cline, William R.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

13750547, G05D 1100

Patent

active

042705630

ABSTRACT:
A safety device for preventing overpressures in low pressure reservoirs receiving compressed gas through a feedline connected to a high pressure source is disclosed including a spherical stopcock in the feedline. A cylinder is provided in pressure communication with the low pressure reservoir with a spring-biased piston arranged within the cylinder. Connected to the piston and projecting from the cylinder is a toothed rack having teeth which intermesh with teeth of a rotatable, toothed segment connected to the stopcock. Motion of the piston, in response to pressure changes in the low pressure reservoir, causes the toothed rack to open or close the stopcock. A hole in the wall of the cylinder allows excess compressed air or gas to escape to the atmosphere in the event that the maximum allowable pressure within the low pressure reservoir is exceeded.

REFERENCES:
patent: 370715 (1887-09-01), Smith
patent: 1361636 (1920-12-01), Stage
patent: 2026249 (1935-12-01), Pierson
patent: 2854990 (1958-10-01), Granberg

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