Patent US3270757A successfully refreshed from Google Patents.
US3270757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual diaphragm pressure regulator
Assignee: Individual
•
Filing: 1963-10-01
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Granted: 1966-09-06
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Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Engler Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:02
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0672; B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2209; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7805; Y10T137/7809; Y10T137/781; Y10T137/7811; Y10T137/7822; Y10T137/7837; Y10T137/7838; Y10T137/7841; Y10T137/794; Y10T137/8122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A DEVICE FOR FIRST STAGE REGULATION OF THE PRESSURE OF A COMPRESSED AIR TANK, COMPRISING MEANS FORMING A HOLLOW HOUSING HAVING AN AXIS AND AN INLET ON SAID AXIS FOR CONNECTION TO SAID TANK, FIRST AND SECOND FLEXIBLE DIAPHRAGMS RESPECTIVELY EXTENDING IN SPACED PARALLEL RELATION ACROSS THE INTERIOR OF SAID HOUSING TRANSVERSELY TO SAID AXIS TO DIVIDE IT INTO A FIRST CHAMBER ON THE SIDE OF SAID FIRT DIAPHRAGM ADJACENT SAID INLET, A SECOND CHAMBER ON THE SIDE OF SAID SECOND DIAPHRAGM REMOTE SAID INLET, AND AN INTERMEDIATE CHAMBER BETWEEN SAID DIAPHRAGMS, SAID SECOND FLEXIBLE DIAPHRAGM BEING OF SUBSTANTIALLY GREATER FLEXIBLE AREA THAN SAID FIRST DIAPHRAGM, SAID FIRST CHAMBER HAVING AN OUTLET, AIR COMMUNICATION MEANS BETWEEN SAID FIRST AND SECOND CHAMBERS, SAID HOUSING HAVING A PASSAGE BETWEEN SAID INTERMEDIATE CHAMBER AND THE OUTSIDE OF SAID HOUSING, AN AXIAL PISTON IN SAID INTERMEDIATE CHAMBER CONNECTED TO SAID DIAPHRAGMS SO THAT THEIR AXIAL MOVEMENTS ARE IN UNISON, SAID INLET COMPRISING A POST
Claim 2
Independent Claim
160 words
A DEVICE FOR FIRST STAGE REGULATION OF THE PRESSURE OF A COMPRESSED AIR TANK, COMPRISING MEANS FORMING A HOLLOW HOUSING HAVING AN AXIS AND AN INLET ON SAID AXIS FOR CONNECTION TO SAID TANK, FIRST AND SECOND FLEXIBLE DIAPHRAGMS RESPECTIVELY EXTENDING IN SPACED PARALLEL RELATION ACROSS THE INTERIOR OF SAID HOUSING TRANSVERSELY TO SAID AXIS TO DIVIDE IT INTO A FIRST CHAMBER ON THE SIDE OF SAID FIRT DIAPHRAGM ADJACENT SAID INLET, A SECOND CHAMBER ON THE SIDE OF SAID SECOND DIAPHRAGM REMOTE SAID INLET, AND AN INTERMEDIATE CHAMBER BETWEEN SAID DIAPHRAGMS, SAID SECOND FLEXIBLE DIAPHRAGM BEING OF SUBSTANTIALLY GREATER FLEXIBLE AREA THAN SAID FIRST DIAPHRAGM, SAID FIRST CHAMBER HAVING AN OUTLET, AIR COMMUNICATION MEANS BETWEEN SAID FIRST AND SECOND CHAMBERS, SAID HOUSING HAVING A PASSAGE BETWEEN SAID INTERMEDIATE CHAMBER AND THE OUTSIDE OF SAID HOUSING, AN AXIAL PISTON IN SAID INTERMEDIATE CHAMBER CONNECTED TO SAID DIAPHRAGMS SO THAT THEIR AXIAL MOVEMENTS ARE IN UNISON, SAID INLET COMPRISING A POST
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |