Pressure release valve
OwnerHarold J. Ledbetterinventor
Life of this patent
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Abstract
A pressure release valve which includes a body having a cavity in the form of a frustum extending from a circular base and terminating in a circular opening at the top of the frustum. An annular lip extends perpendicularly from the circular opening toward the base of the body, the lip having a recessed annular shoulder. A central shaft extends axially through the circular opening in the body. A spindle head disc extends radially from the central shaft and has a circular edge seatable in the recessed annular shoulder. A top disc extends radially from the shaft, the top disc terminating in a downwardly extending flange spaced from the spindle head disc circular edge and spaced from the annular lip. Seals between the spindle head disc and the top disc provide a seal with the annular lip when the valve is in the closed position.
Claims5
A pressure release valve which comprises:
- a. a body having a cavity in the form of a frustum extending from a circular base and terminating in a circular opening at the top of said frustum;
- b. an annular lip extending from said circular opening into said cavity perpendicularly toward said base of said body, said lip having a recessed annular shoulder;
- c. a central shaft extending axially through said circular opening in said body;
- d. a spindle head disc extending radially from said central shaft and having a circular edge seatable in said recessed annular shoulder;
- e. a top disc extending radially from said shaft, said top disc terminating in a downwardly extending flange spaced from said spindle head disc circular edge and spaced from said annular lip wherein said top disc mates with said spindle head disc to form a pair of annular openings therebetween;
- and
- f. seal means including a pair of O-rings retained in said annular openings compressed between said spindle head disc and said top disc providing a seal with said annular lip.
Dependencies are inferred from the claim text.