Patent US3129784A successfully refreshed from Google Patents.
US3129784A
Expired / Lapsed
US
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Safety valves
Assignee: Nuquip Ltd
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Filing: 1960-10-31
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Granted: 1964-04-21
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Cosby D P Smallpeice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:42
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; F16K15/142; F16K17/00; F16K17/02; F16K17/04; F16K17/0446; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
161 words
A SILENCER FOR A GAS EXHAUST COMPRISING A CYLINDRICAL POROUS BODY PROVIDED WITH AN INLET FOR THE GAS, SAID BODY PERVIOUS TO THE GAS, SAID BODY HAVING AT LEAST ONE OUTLET PORT IN ITS CYLINDRICAL WALL, AND A CIRCUMFERENTIALLY CONTRACTILE MEMBER ENGAGED AROUND THE EXTERIOR OF SAID CYLINDRICAL WALL AND POSITIONED OVER SAID OUTLET PORT TO SEAL SAID OUTLET PORT, THE CONTRACTILE EFFORT OF SAID CONTRACTILE MEMBER ADAPTED TO BE OVERCOME WHEN MATTER SUSPENDED IN SAID GAS CLOGS THE PORES OF SAID POROUS BODY TO AN EXTENT WHICH WILL CAUSE THE GAS PRESSURE WITHIN SAID BODY TO RISE TO A VALUE AT WHICH IT WILL ACT THROUGH SAID PORT TO DISPLACE SAID CONTRACTILE MEMBER OUT OF ITS SEALING POSITION, AND SAID CONTRACTILE MEMBER FREE TO MOVE AXIALLY ON SAID CYLINDRICAL BODY SO THAT SAID CONTRACTILE MEMBER IS ADAPTED TO BE DISPLACED AXIALLY OF SAID BODY BY FLUID ESCAPING FROM SAID OUTLET PORT WHEREBY AFTERWARDS TO LEAVE IT AT LEAST PARTIALLY UNCOVERED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |