US3922767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing pre-mounted rupture discs
Assignee: Continental Disc Corp
•
Filing: 1973-09-17
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Granted: 1975-12-02
•
Expires: 1993-09-17
Abstract
Abstract In producing safety pressure relief devices of the pre-mounted reverse buckling disc type, the inlet mounting ring disc supporting radius is formed simultaneously with the inlet ring by punching a center circle from the disc blank instead of machining the radius.
Inventors
- 👤 Robert L Solter
- 👤 Franklin A Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:45
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/001; B21; B21D; B21D28/00; B21D28/02; F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/1606; F16K17/1613; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714; Y10T137/1729; Y10T137/1737; Y10T137/1752; Y10T137/1759; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49428; Y10T29/4943
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
The method of producing a safety pressure relief device disc unit having a reverse buckling rupture member including an annular flange portion and a central bulged portion, said disc unit having a metallic inlet seating ring positioned on said disc flange portion and secured with respect thereto, said seating ring having an inner ring diameter many times greater than the thickness thereof and including an inner edge radius supporting said rupture member between said flange portion and said bulged portion, said method including the steps of producing said inner ring diameter and inner edge radius together with the producing of said ring from a blank through stretching and deforming the metal thereof by shear punching through a square corner die a portion therefrom to form said ring diameter and inner edge radius without material bending adjacent thereto, said inner edge radius being caused by metal flow during said punching operation without causing any deformation at the lower inner edge, engaging the rupture member with said punched ring adjacent said inner edge radius, and bulging a portion of said disc through said ring against said radius.
Claim 2
Independent Claim
185 words
The method of producing a safety pressure relief device disc unit having a reverse buckling rupture member including an annular flange portion and a central bulged portion, said disc unit having a metallic inlet seating ring positioned on said disc flange portion and secured with respect thereto, said seating ring having an inner ring diameter many times greater than the thickness thereof and including an inner edge radius supporting said rupture member between said flange portion and said bulged portion, said method including the steps of producing said inner ring diameter and inner edge radius together with the producing of said ring from a blank through stretching and deforming the metal thereof by shear punching through a square corner die a portion therefrom to form said ring diameter and inner edge radius without material bending adjacent thereto, said inner edge radius being caused by metal flow during said punching operation without causing any deformation at the lower inner edge, engaging the rupture member with said punched ring adjacent said inner edge radius, and bulging a portion of said disc through said ring against said radius.
Claim 3
Dependent Claim
20 words
The method as set forth in claim 1 including the step of securing the rupture member to said punched ring.
Claim 4
Dependent Claim
25 words
The method as set forth in claim 1 wherein said inlet seating ring has a thickness in the range of about 0.05 to 0.10 inches.
Claim 5
Dependent Claim
40 words
The method as set forth in claim 1 wherein said inlet seating ring has a thickness in the range of about 0.062 to 0.093 inches and said rupture member has a thickness in the range of 0.0015 and 0.015 inches.
References Cited (Backward Citations)
US1665203A
Cited
US2224748A
Cited
US2225220A
Cited
US3022758A
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US2987218A
Cited
US3294277A
Cited
US3526336A
Cited
US3685686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |