Patent US3147499A successfully refreshed from Google Patents.
US3147499A
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Automatic life jacket inflator for selfcontained underwater breathing apparatus
Assignee: BUTKIN TOOL AND Manufacturing CORP
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Filing: 1961-10-04
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Granted: 1964-09-08
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Nelson
- 👤 Butka John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:45
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C11/2245; B63C11/30; B63C9/00; B63C9/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN UNDERWATER BREATHING APPARATUS COMPRISING: A BREATHING DEVICE THROUGH WHICH A DIVER BREATHES; MEANS FOR SUPPLYING AIR UNDER REGULATED PRESSURE TO SAID BREATHING DEVICE; MEANS FOR EXHAUSTING EXHALED BREATHS OF AIR FROM SAID BREATHING DEVICE; AN INFLATABLE LIFE JACKET FOR THE DIVER; INFLATING MEANS RESPONSIVE TO THE TERMINATION OF THE DIVER''S BREATHING FOR AUTOMATICALLY INFLATING SAID LIFE JACKET; AND INTERLOCKING MEANS RESPONSIVE TO AMBIENT WATER PRESSURE TO DISARM SAID INFLATING MEANS TO PREVENT INFLATION OF SAID LIFE JACKET WHENEVER THE AMBIENT WATER PRESSURE IS LESS THAN THAT AT A DEPTH OF APPROXIMATELY THREE FEET, WHEREBY SAID INFLATING MEANS DOES NOT OP-
Claim 2
Dependent Claim
101 words
AN UNDERWATER BREATHING APPARATUS COMPRISING: A BREATHING DEVICE THROUGH WHICH A DIVER BREATHES; MEANS FOR SUPPLYING AIR UNDER REGULATED PRESSURE TO SAID BREATHING DEVICE; MEANS FOR EXHAUSTING EXHALED BREATHS OF AIR FROM SAID BREATHING DEVICE; AN INFLATABLE LIFE JACKET FOR THE DIVER; INFLATING MEANS RESPONSIVE TO THE TERMINATION OF THE DIVER''S BREATHING FOR AUTOMATICALLY INFLATING SAID LIFE JACKET; AND INTERLOCKING MEANS RESPONSIVE TO AMBIENT WATER PRESSURE TO DISARM SAID INFLATING MEANS TO PREVENT INFLATION OF SAID LIFE JACKET WHENEVER THE AMBIENT WATER PRESSURE IS LESS THAN THAT AT A DEPTH OF APPROXIMATELY THREE FEET, WHEREBY SAID INFLATING MEANS DOES NOT OP-
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |