US3288167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relife valve
Assignee: Textron Inc
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Filing: 1964-02-05
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Granted: 1966-11-29
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Expires: 1984-02-05
Abstract
No abstract record available.
Inventors
- 👤 Willard C Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:49
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; F16K27/0209; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/065; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931; Y10T137/7938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A RELIEF VALVE COMPRISING A BODY HAVING A FLUID PASSAGE BORE EXTENDING AXIALLY THERETHROUGH, A VALVE SEAT AT THE OUTER END OF SAID BORE, A POPPET ADAPTED TO MAKE SEALING ENGAGEMENT WITH SAID VALVE SEAT, A STEM SECURED TO SAID POPPET AND EXTENDING AXIALLY THROUGH SAID BORE BEYOND THE INNER END THEREOF, A FIRST SPRING ABUTMENT ON SAID STEM SPACED FROM THE INNER END OF SAID BORE, A COMPRESSION SPRING AROUND SAID STEM HAVING ONE END ENGAGEABLE WITH SAID FIRST ABUTMENT, AND SPACER MEANS PROVIDING A SECOND SPRING ABUTMENT FOR THE OTHER END OF SAID SPRING A SPACED DISTANCE FROM SAID BODY, SAID SPACER MEANS COMPRISING THREE SEPARATE IDENTICAL MEMBERS HAVING SUBSTANTIALLY FLAT CENTER SECTIONS ADAPTED TO FIT TOGETHER IN EDGE ABUTTING RELATIONSHIP IN LONGITUDINAL ALIGNMENT TO FORM A RIGID TRIANGULAR BOX AROUND SAID STEM, EACH OF SAID MEMBERS EXTENDING FROM SAID BODY TO A POINT ADJACENT THE OTHER END OF SAID SPRING.
Claim 2
Dependent Claim
153 words
A RELIEF VALVE COMPRISING A BODY HAVING A FLUID PASSAGE BORE EXTENDING AXIALLY THERETHROUGH, A VALVE SEAT AT THE OUTER END OF SAID BORE, A POPPET ADAPTED TO MAKE SEALING ENGAGEMENT WITH SAID VALVE SEAT, A STEM SECURED TO SAID POPPET AND EXTENDING AXIALLY THROUGH SAID BORE BEYOND THE INNER END THEREOF, A FIRST SPRING ABUTMENT ON SAID STEM SPACED FROM THE INNER END OF SAID BORE, A COMPRESSION SPRING AROUND SAID STEM HAVING ONE END ENGAGEABLE WITH SAID FIRST ABUTMENT, AND SPACER MEANS PROVIDING A SECOND SPRING ABUTMENT FOR THE OTHER END OF SAID SPRING A SPACED DISTANCE FROM SAID BODY, SAID SPACER MEANS COMPRISING THREE SEPARATE IDENTICAL MEMBERS HAVING SUBSTANTIALLY FLAT CENTER SECTIONS ADAPTED TO FIT TOGETHER IN EDGE ABUTTING RELATIONSHIP IN LONGITUDINAL ALIGNMENT TO FORM A RIGID TRIANGULAR BOX AROUND SAID STEM, EACH OF SAID MEMBERS EXTENDING FROM SAID BODY TO A POINT ADJACENT THE OTHER END OF SAID SPRING.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |