US2558756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen generator
Assignee: MSA Safety Inc
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Filing: 1948-07-28
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Granted: 1951-07-03
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Expires: 1968-07-28
Abstract
No abstract record available.
Inventors
- 👤 Carey B Jackson
- 👤 Robert M Bovard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
A; A62; A62B; A62B21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN OXYGEN GENERATOR COMPRISING AN ELONGATE CANISTER CLOSED AT ITS ENDS AND PROVIDED AT ONE END WITH AN OXYGEN OUTLET, A CONSOLIDATED BODY OF A COMBUSTIBLE COMPOSITION WHICH UPON IGNITION UNDERGOES EXOTHERMIC REACTION WITH EVOLUTION OF OXYGEN DISPOSED IN SAID CANISTER, MEANS ASSOCIATED WITH SAID CANISTER FOR IGNITING SAID COMPOSION, AND A LAYER OF SUBSTANCE THAT IS DECOMPOSED ENDOTHERMICALLY WITH EVOLUTION OF OXYGEN UNDER THE HEAT OF REACTION OF SAID COMPOSITION SURROUNDING THE EXTERIOR OF SAID BODY BETWEEN IT AND THE CANISTER WALL.
Claim 2
Dependent Claim
83 words
AN OXYGEN GENERATOR COMPRISING AN ELONGATE CANISTER CLOSED AT ITS ENDS AND PROVIDED AT ONE END WITH AN OXYGEN OUTLET, A CONSOLIDATED BODY OF A COMBUSTIBLE COMPOSITION WHICH UPON IGNITION UNDERGOES EXOTHERMIC REACTION WITH EVOLUTION OF OXYGEN DISPOSED IN SAID CANISTER, MEANS ASSOCIATED WITH SAID CANISTER FOR IGNITING SAID COMPOSION, AND A LAYER OF SUBSTANCE THAT IS DECOMPOSED ENDOTHERMICALLY WITH EVOLUTION OF OXYGEN UNDER THE HEAT OF REACTION OF SAID COMPOSITION SURROUNDING THE EXTERIOR OF SAID BODY BETWEEN IT AND THE CANISTER WALL.
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |