US3126744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hermanns
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:25
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01L; G01L13/00; G01L13/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
A DEVICE RESPONSIVE TO THE DIFFERENCE BETWEEN TWO PRESSURES, INCLUDING, A RIGID CASE HAVING A PAIR OF INLET CONNECTIONS PASSING THROUGH THE WALL THEREOF, AN ACTIVE ELEMENT SECURED AT ITS RIM TO SAID CASE AND LOCATED BETWEEN SAID INLET CONNECTIONS SO AS TO MOVE IN RESPONSE TO ANY DIFFERENCE BETWEEN THE PRESSURES APPLIED BY SAID INLET CONNECTIONS, AND A RANGE SPRING DEVICE CONNECTED AT ONE END TO SAID CASE AND CONNECTED AT ITS OTHER END TO SAID ACTIVE ELEMENT, SAID RANGE SPRING DEVICE COMPRISING, A HELICAL SPRING SECURED AT ONE END TO SAID CASE, A DISC SECURED TO THE FREE END OF SAID SPRING, MEANS FOR RENDERING A PORTION OF THE FREE END OF SAID HELICAL SPRING INOPERATIVE, A FLAT LEAF
References Cited (Backward Citations)
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US1436344A
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US2421222A
Cited
US2664749A
Cited
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Cited
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Cited
FR1120229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |