Patent US4655070A successfully refreshed from Google Patents.
US4655070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scored concave-convex rupture disk and method of manufacture
Assignee: Individual
•
Filing: 1984-09-26
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Granted: 1987-04-07
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Expires: 2004-09-26
Abstract
Abstract The present invention relates to methods of manufacturing scored concave-convex rupture disks wherein the disks are score after forming on the convex side, away from the pressure vessel or "process" of which the disk controls pressure so that product cannot build-up in the score and speed corrosion and/or alter burst pressure.
Inventors
- 👤 Miner E. Clift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:10
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/80
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
A method of manufacturing a scored concave-convex rupture disk having a known rupture pressure from a section of sheet metal comprising the following steps: a. sectioning a portion of sheet metal into a disk shaped blank; b. forming a concave-convex dome on the sheet metal disk blank to a pressure value slightly lower than the disk burst pressure; and c. forming a score on the convex surface of the concave-convex dome and after forming the concave-convex dome to a pressure value near disk burst pressure.
Claim 2
Independent Claim
85 words
A method of manufacturing a scored concave-convex rupture disk having a known rupture pressure from a section of sheet metal comprising the following steps: a. sectioning a portion of sheet metal into a disk shaped blank; b. forming a concave-convex dome on the sheet metal disk blank to a pressure value slightly lower than the disk burst pressure; and c. forming a score on the convex surface of the concave-convex dome and after forming the concave-convex dome to a pressure value near disk burst pressure.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the score has a cross-sectional angle of sixty degrees (60°).
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein in step "b," the concave-convex dome is formed on the disk with a pressure at or near the actual burst pressure.
Claim 5
Dependent Claim
22 words
The method of claim 3 wherein the disk is formed with a pressure of ninety percent (90%) of its actual burst pressure.
Claim 6
Independent Claim
69 words
A method of forming a scored concave-convex type rupture disk, comprising: a. sectioning a blank of sheet metal base disk material; b. determining the burst pressure on the disk base material; c. forming a concave-convex dome on the disk blank using a pressure of ninety percent (90%) of the disk burst pressure; and d. scoring the disk on one of its curved surfaces after the concave-convex surface is formed.
Claim 7
Independent Claim
69 words
A method of forming a scored concave-convex type rupture disk, comprising: a. sectioning a blank of sheet metal base disk material; b. determining the burst pressure on the disk base material; c. forming a concave-convex dome on the disk blank using a pressure of ninety percent (90%) of the disk burst pressure; and d. scoring the disk on one of its curved surfaces after the concave-convex surface is formed.
References Cited (Backward Citations)
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US2656950A
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US3921556A
Cited
US4122595A
Cited
US4139005A
Cited
US4492103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |