Patent US3269170A successfully refreshed from Google Patents.
US3269170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure relief valve testing apparatus
Assignee: Individual
•
Filing: 1964-09-28
•
Granted: 1966-08-30
•
Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Edward H Sebring
- 👤 James J Hackett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
F; F16; F16K; F16K37/00; F16K37/0075; F16K37/0083; F16K17/00; F16K17/02; F16K17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
APPARATUS FOR DETERMINING THE PRESSURE SETTING OF A VARIABLE SPRING HELD SEAT ENGAGING VALVE DISC HAVING A SPINDLE EXTENDING FROM THE VALVE DISC AND ON WHICH THE SPRING IS MOUNTED COMPRISING PRESSURE RESPONSIVE MEANS CONNECTED TO SAID SPINDLE FOR EXERTING A FORCE ON SAID SPINDLE IN OPPOSITION TO THE FORCE OF THE SPRING, A MEMBER FOR MEASURING THE FORCE APPLIED AT SAID PRESSURE RESPONSIVE MEANS, A FIXEDLY MOUNTED REFERENCE MEMBER, A REFERENCE MEMBER BETWEEN SAID VALVE DISC AND SAID SPRING AND MOVABLE WITH SAID SPINDLE AND WITH RESPECT TO SAID FIXEDLY MOUNTED REFERENCE MEMBER, AND MOVEMENT RESPONSIVE MEANS RESPONSIVE TO RELATIVE MOVEMENT OF SAID REFERENCE MEMBERS FOR INDICATING MOVEMENT IMMEDIATELY PRIOR TO SEPARATION OF THE VALVE DISC FROM ITS SEAT.
Claim 2
Dependent Claim
120 words
APPARATUS FOR DETERMINING THE PRESSURE SETTING OF A VARIABLE SPRING HELD SEAT ENGAGING VALVE DISC HAVING A SPINDLE EXTENDING FROM THE VALVE DISC AND ON WHICH THE SPRING IS MOUNTED COMPRISING PRESSURE RESPONSIVE MEANS CONNECTED TO SAID SPINDLE FOR EXERTING A FORCE ON SAID SPINDLE IN OPPOSITION TO THE FORCE OF THE SPRING, A MEMBER FOR MEASURING THE FORCE APPLIED AT SAID PRESSURE RESPONSIVE MEANS, A FIXEDLY MOUNTED REFERENCE MEMBER, A REFERENCE MEMBER BETWEEN SAID VALVE DISC AND SAID SPRING AND MOVABLE WITH SAID SPINDLE AND WITH RESPECT TO SAID FIXEDLY MOUNTED REFERENCE MEMBER, AND MOVEMENT RESPONSIVE MEANS RESPONSIVE TO RELATIVE MOVEMENT OF SAID REFERENCE MEMBERS FOR INDICATING MOVEMENT IMMEDIATELY PRIOR TO SEPARATION OF THE VALVE DISC FROM ITS SEAT.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |