Fluid relief device

Details Fluid relief device Fluid relief device

1993-12-03

1996-05-28

Walton, George L.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Liquid supplied at valve interface

73 232, 73 492, 13724622, 137312, 137469, 137534, 137557, 22020301, 22020329, F16K 2404, F16K 3700, F16K 5100

Patent

active

055202098

ABSTRACT:
The present invention discloses a fluid relief device for relieving pressure of a fluid stored in a container or tank, or fluid used in a piece of equipment. In one aspect such a device has a body member with a primary channel therethrough in communication with a container of a contained fluid under pressure. When the pressure of the contained fluid under pressure exceeds a predetermined level, the pressure of the contained fluid moves a cover which is sealingly in place to close off the primary channel. During normal conditions the force of the contained fluid is insufficient to move the cover and leakage of the contained fluid past the cover is inhibited by the provision of a barrier fluid supplied into a barrier fluid chamber to oppose the contained fluid, the barrier fluid at a pressure greater than the normal pressure of the contained fluid. Seals may be provided on one or two sides of the barrier fluid chamber--a first seal to seal the primary channel-chamber interface and a second seal to seal the chamber-exterior interface. Fluid under pressure supplied to the chamber may leak past the first seal into the container. In one aspect an inert barrier fluid, e.g. nitrogen is used. Devices according to this invention may be used with pressure relief devices and vacuum relief devices.

REFERENCES:
patent: 1826941 (1931-10-01), La Mont
patent: 2918938 (1959-12-01), Kimball
patent: 3100502 (1963-08-01), Ford et al.
patent: 3175566 (1965-03-01), Daniels
patent: 3217082 (1965-11-01), King et al.
patent: 3426581 (1969-02-01), Briggs
patent: 3665952 (1972-05-01), Chronister
patent: 3713461 (1973-01-01), Notelteirs
patent: 3848765 (1974-11-01), Durkop
patent: 3902356 (1975-09-01), Rupf-Bolz
patent: 4091837 (1978-05-01), Edmunds et al.
patent: 4144902 (1979-03-01), Mahr et al.
patent: 4188174 (1980-02-01), Perkins
patent: 4431161 (1984-02-01), Miller et al.
patent: 4444219 (1984-04-01), Hollenstein
patent: 4478178 (1984-10-01), Pernet
patent: 4676266 (1987-06-01), Johnson
patent: 4912966 (1990-04-01), Sharp
patent: 5046354 (1991-09-01), Munguia et al.
patent: 5048555 (1991-09-01), Mieth et al.
patent: 5203372 (1993-04-01), Freiler
patent: 5249593 (1993-10-01), Higgins et al.

Affiliated with

Also associated with

Rating

Fluid relief device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid relief device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid relief device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-780504