US3854522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High service temperature pressure sensitive device
Assignee: Braskem America Inc
•
Filing: 1973-04-25
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Granted: 1974-12-17
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Expires: 1993-04-25
Abstract
Abstract Rupture discs are combined with cooling means to provide high service temperature pressure sensitive devices.
Inventors
- 👤 W Didycz
- 👤 A Seabury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:59
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; F16K17/162; F16K17/36; F16K17/38; B; B01; B01J; B01J2219/00; B01J2219/00049; B01J2219/00245; B01J2219/0027; Y; Y10; Y10S; Y10S137/00; Y10S137/91; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714; Y10T137/8811
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
27 words
A method of increasing the service temperature of vented rupture discs comprising maintaining a body of cooling liquid on the outer surface of said vented rupture disc.
Claim 2
Independent Claim
27 words
A method of increasing the service temperature of vented rupture discs comprising maintaining a body of cooling liquid on the outer surface of said vented rupture disc.
Claim 3
Independent Claim
25 words
A method of increasing the service temperature of vented rupture discs comprising flowing a cooling liquid across the outer surface of said vented rupture disc.
Claim 4
Independent Claim
25 words
A method of increasing the service temperature of vented rupture discs comprising flowing a cooling liquid across the outer surface of said vented rupture disc.
Claim 5
Dependent Claim
11 words
The method of claim 2 wherein the cooling liquid is water.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |