Patent US3307597A successfully refreshed from Google Patents.
US3307597A
Expired / Lapsed
US
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First stage pressure regulators mounted within air cylinder plug
Assignee: WJ Voit Rubber Corp
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Filing: 1964-09-16
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Granted: 1967-03-07
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Expires: 1984-09-16
Abstract
No abstract record available.
Inventors
- 👤 Earl M Shugarman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:52
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2209; A; A62; A62B; A62B9/00; A62B9/02; G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN AN UNDERWATER BREATHING APPARATUS INCLUDING AN AIR CYLINDER HAVING AN APERTURE AT ONE END FOR SUPPLYING AIR TO SAID APPARATUS, THE COMBINATION COMPRISING: A PLUG MOUNTED IN THE APERTURE OF SAID CYLINDER AND HAVING A PLURALITY OF DUCTS LOCATED THEREIN AND AN APERTURE EXTENDING THROUGH A SIDE PORTION THEREOF, A PRESSURE REGULATOR MOUNTED WITHIN THE PLUG AND CONTROLLING THE FLOW OF AIR FROM THE CYLINDER, SAID REGULATOR BEING EXPOSED THROUGH THE PLUG APERTURE TO AN AMBIENT MEDIUM TO REGULATE THE PRESSURE OF THE AIR IN ACCORDANCE WITH THE PRESSURE OF THE MEDIUM, A FIRST CHECK VALVE MOUNTED WITHIN A FIRST DUCT LEADING FROM THE CYLINDER TO THE REGULATOR SAID DUCT PERMITTING A FLOW OF AIR FROM THE CYLINDER TO THE REGULATOR AND SAID REGULATOR PERMITTING A CONTROLLED FLOW OF AIR TO A SECOND DUCT, AND A SECOND CHECK VALVE BEING POSITIONED AT THE OUTLET OF THE SECOND DUCT WITHIN THE PLUG AND BEING NORMALLY CLOSED TO A FLOW OF AIR TO A THIRD DUCT WHICH LEADS INTO THE CYLINDER DUE TO THE CYLINDER PRESSURE ON SAID VALVE, SAID VALVE NORMALLY PERMITTING THE AIR TO FLOW TO A
Claim 2
Dependent Claim
188 words
IN AN UNDERWATER BREATHING APPARATUS INCLUDING AN AIR CYLINDER HAVING AN APERTURE AT ONE END FOR SUPPLYING AIR TO SAID APPARATUS, THE COMBINATION COMPRISING: A PLUG MOUNTED IN THE APERTURE OF SAID CYLINDER AND HAVING A PLURALITY OF DUCTS LOCATED THEREIN AND AN APERTURE EXTENDING THROUGH A SIDE PORTION THEREOF, A PRESSURE REGULATOR MOUNTED WITHIN THE PLUG AND CONTROLLING THE FLOW OF AIR FROM THE CYLINDER, SAID REGULATOR BEING EXPOSED THROUGH THE PLUG APERTURE TO AN AMBIENT MEDIUM TO REGULATE THE PRESSURE OF THE AIR IN ACCORDANCE WITH THE PRESSURE OF THE MEDIUM, A FIRST CHECK VALVE MOUNTED WITHIN A FIRST DUCT LEADING FROM THE CYLINDER TO THE REGULATOR SAID DUCT PERMITTING A FLOW OF AIR FROM THE CYLINDER TO THE REGULATOR AND SAID REGULATOR PERMITTING A CONTROLLED FLOW OF AIR TO A SECOND DUCT, AND A SECOND CHECK VALVE BEING POSITIONED AT THE OUTLET OF THE SECOND DUCT WITHIN THE PLUG AND BEING NORMALLY CLOSED TO A FLOW OF AIR TO A THIRD DUCT WHICH LEADS INTO THE CYLINDER DUE TO THE CYLINDER PRESSURE ON SAID VALVE, SAID VALVE NORMALLY PERMITTING THE AIR TO FLOW TO A
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |