US3677289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure relief valve
Assignee: American Air Filter Co Inc
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Filing: 1970-09-09
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Granted: 1972-07-18
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Expires: 1990-09-09
Abstract
Abstract A pressure relief valve assembly for a plenum chamber including a ported valve seat communicating with an outlet of the chamber and a weighted relief valve cooperating with the ported valve seat, the extreme edge of the valve engaging in sharp-line contact with the ported valve seat.
Inventors
- 👤 Richard D Rivers
- 👤 Thomas W Byers
- 👤 Edward J Fortener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:36
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K17/00; F16K17/02; F16K17/12; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7901; Y10T137/7903
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
A pressure relief valve assembly for a plenum chamber comprising a ported resilient valve seat communicating with an outlet of said chamber; a fluid impervious body portion in covering relation with said outlet of said chamber, said body portion having a peripheral portion extending at an angle of about 135* to said body with an extreme 90* edge thereof resting in a plane extending substantially at a 45* angle to the surface of said ported resilient valve seat and engaging in sharp-line contact therewith; a weight positioned on top of and overhanging said body portion to provide a sealing pressure transmitted to said resilient valve seat through said peripheral portion to resiliently deflect, without cutting, said valve seat, thereby providing that when sufficient pressure occurs within said plenum chamber said sealing pressure is readily overcome with the aid of an upward force due to the resiliency of said ported resilient valve seat.
Claim 2
Dependent Claim
152 words
A pressure relief valve assembly for a plenum chamber comprising a ported resilient valve seat communicating with an outlet of said chamber; a fluid impervious body portion in covering relation with said outlet of said chamber, said body portion having a peripheral portion extending at an angle of about 135* to said body with an extreme 90* edge thereof resting in a plane extending substantially at a 45* angle to the surface of said ported resilient valve seat and engaging in sharp-line contact therewith; a weight positioned on top of and overhanging said body portion to provide a sealing pressure transmitted to said resilient valve seat through said peripheral portion to resiliently deflect, without cutting, said valve seat, thereby providing that when sufficient pressure occurs within said plenum chamber said sealing pressure is readily overcome with the aid of an upward force due to the resiliency of said ported resilient valve seat.
Claim 3
Dependent Claim
17 words
The apparatus of claim 1, said body portion and said peripheral portion being an integrally stamped unit.
Claim 4
Dependent Claim
34 words
The apparatus of claim 1, said weight including a pintle mounted on one end thereof for limited free movement in a fixed place sleeve to permit vertical and pivotal movement of said valve member.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |