Patent US5909923A successfully refreshed from Google Patents.
US3698598A
Expired / Lapsed
US
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Safety pressure relief device
Assignee: Black Sivalls and Bryson Inc
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Filing: 1971-07-26
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Granted: 1972-10-17
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Expires: 1991-07-26
Abstract
Abstract The present invention relates to an improved safety pressure relief device of the rupturable type comprising a rupture member which is of sufficient strength to rupture at a predetermined pressure having a concave-convex portion connected to an annular flat flange portion, a circular resilient sealing member positioned adjacent to and facing the concave side of said rupture member, the peripheral portion of said sealing member coinciding with the annular flat flange portion of said rupture member, and a flat circular support member positioned adjacent to the sealing member, the support member having slots radiating outwardly from a central portion and terminating short of the outer periphery thereof forming a plurality of sector shaped portions connected together at the central portion so that the support member provides support for the sealing member but readily ruptures and opens upon rupture of the rupture and sealing members. The outer peripheral edge of the support member is folded over the outer peripheral edges of the sealing and rupture members so that the members are rigidly held together.
Inventors
- 👤 Loren E Wood
- 👤 Marvin H Free
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:21
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/162; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714; Y10T137/1729; Y10T137/1744; Y10T137/1752
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
176 words
In a safety pressure relief device of the rupturable type supported between inlet and outlet supporting members, the improvement comprising: a rupture member which is of sufficient strength to rupture at a predetermined pressure having a concave-convex portion connected to annular flat flange portion; a circular resilient member positioned adjacent to and facing the concave side of said rupture member, the peripheral portion of said sealing member coinciding with said annular flat flange portion of said rupture member; a flat circular support member positioned adjacent to said sealing member, said support member having slots radiating outwardly from a central portion and terminating short of the outer periphery thereof forming a plurality of sector shaped portions therein connected together at said central portion so that said support member provides support for said sealing member but readily ruptures and opens upon rupture of said rupture and sealing members; and the outer peripheral edge of said support member being folded over the outer peripheral edges of said sealing and rupture members so that said members are rigidly held together.
Claim 2
Dependent Claim
176 words
In a safety pressure relief device of the rupturable type supported between inlet and outlet supporting members, the improvement comprising: a rupture member which is of sufficient strength to rupture at a predetermined pressure having a concave-convex portion connected to annular flat flange portion; a circular resilient member positioned adjacent to and facing the concave side of said rupture member, the peripheral portion of said sealing member coinciding with said annular flat flange portion of said rupture member; a flat circular support member positioned adjacent to said sealing member, said support member having slots radiating outwardly from a central portion and terminating short of the outer periphery thereof forming a plurality of sector shaped portions therein connected together at said central portion so that said support member provides support for said sealing member but readily ruptures and opens upon rupture of said rupture and sealing members; and the outer peripheral edge of said support member being folded over the outer peripheral edges of said sealing and rupture members so that said members are rigidly held together.
Claim 3
Dependent Claim
65 words
The apparatus of claim 1 wherein the concave-convex portion of said rupture member includes slits formed therein radiating outwardly from a central portion thereof to near said annular flat flange portion of said rupture member thereby defining a plurality of sector shaped portions so that upon rupture tearing takes place between the inner ends of said slits allowing said rupture member to open without fragmentation.
Claim 4
Dependent Claim
28 words
The apparatus of claim 2 wherein the concave-convex portion of said rupture member includes apertures formed therein positioned at each of the extremities of each of said slits.
Claim 5
Dependent Claim
84 words
The apparatus of claim 3 which is further characterized to include a circular positioning member having a central upstanding frusto-conical portion for positioning said member centrally between said supporting members connected to an annular flat flange portion, said positioning member positioned adjacent to the convex surface of said rupture member with the annular flat flange portion thereof coinciding with the annular flat flange portion of said rupture member and the outer peripheral edge thereof fitted under the folded peripheral edge of said support member.
Claim 6
Dependent Claim
240 words
A safety pressure relief device adapted to be clamped between a pair of suPporting flanges having opposed flat annular clamping surfaces which comprises: a circular positioning member having a central upstanding frusto-conical portion for positioning said member centrally between said supporting flanges, said frusto-conical portion being connected to an annular flat flange portion; a rupture member which is of sufficient strength to rupture at a predetermined pressure having a concave-convex portion connected to a flat annular flange portion, the annular flat flange portion of said rupture member lying adjacent to and coinciding with the annular flat flange portion of said positioning member; a circular resilient sealing member positioned facing the concave surface of said rupture member, the peripheral portion of said sealing member coinciding with the annular flat flange portion of said rupture member; a flat circular support member positioned adjacent to said sealing member, said support member having slots radiating outwardly from a central portion thereof and terminating short of the outer periphery thereof thereby forming a plurality of sector shaped portions in said support member connected together at said central portion so that said support member provides support for said sealing member but readily ruptures and opens upon rupture of said rupture and sealing members; and the outer peripheral edge of said support member being folded over the outer peripheral edges of said sealing member, rupture member and positioning member so that said members are rigidly held together.
Claim 7
Dependent Claim
240 words
A safety pressure relief device adapted to be clamped between a pair of suPporting flanges having opposed flat annular clamping surfaces which comprises: a circular positioning member having a central upstanding frusto-conical portion for positioning said member centrally between said supporting flanges, said frusto-conical portion being connected to an annular flat flange portion; a rupture member which is of sufficient strength to rupture at a predetermined pressure having a concave-convex portion connected to a flat annular flange portion, the annular flat flange portion of said rupture member lying adjacent to and coinciding with the annular flat flange portion of said positioning member; a circular resilient sealing member positioned facing the concave surface of said rupture member, the peripheral portion of said sealing member coinciding with the annular flat flange portion of said rupture member; a flat circular support member positioned adjacent to said sealing member, said support member having slots radiating outwardly from a central portion thereof and terminating short of the outer periphery thereof thereby forming a plurality of sector shaped portions in said support member connected together at said central portion so that said support member provides support for said sealing member but readily ruptures and opens upon rupture of said rupture and sealing members; and the outer peripheral edge of said support member being folded over the outer peripheral edges of said sealing member, rupture member and positioning member so that said members are rigidly held together.
Claim 8
Dependent Claim
65 words
The apparatus of claim 5 wherein the concave-convex portion of said rupture member includes slits formed therein radiating outwardly from a central portion thereof to near said annular flat flange portion of said rupture member thereby defining a plurality of sector shaped portions so that upon rupture tearing takes place between the inner ends of said slits allowing said rupture member to open without fragmentation.
Claim 9
Dependent Claim
28 words
The apparatus of claim 6 wherein the concave-convex portion of said rupture member includes apertures formed therein positioned at each of the extremities of each of said slits.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |