Patent US2687449A successfully refreshed from Google Patents.
US2687449A
Expired / Lapsed
US
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Battery cap apparatus
Assignee: IND RES Inc
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Filing: 1953-08-17
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Granted: 1954-08-24
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Expires: 1973-08-17
Abstract
No abstract record available.
Inventors
- 👤 Harold M Gulick
- 👤 Cresswell E Stedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:10
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
136 words
A CATALYST UNIT FOR CATALYZING THE WATERFORMING REACTION BETWEEN HYDROGEN AND OXYGEN COMPRISING, A HOLLOW POROUS HOLDER HAVING ONE END THEREOFF OPEN, A MASS OF FINELY DIVIDED HEAT INSULATING MATERIAL PACKED INTO THE INTERIOR OF SAID HOLDER, A CATALYST OF A TYPE FOR CATALYZING THE WATER-FORMING REACTION BETWEEN HYDROGEN AND OXYGEN DISTRIBUTED THROUGHOUT THE INSULATOR MATERIAL WHEREBY THE CATALYST IS HEAT INSULATED WITH THE FINELY DIVIDED INSULATION SERVING TO METER THE FLOW OF HYDROGEN AND OXYGEN UNIFORMLY TO THE CATALYST, AND A ROUNDED CORROSIVE RESISTANT ONEPIECE METAL CAP ARRANGED OVER THE OPEN END OF SAID HOLDER, SAID CAP BEING PROVIDED WITH OPENINGS TO PERMIT WATER VAPOR TO PASS THERETHROUGH FROM THE INTERIOR OF SAID HOLDER BUT EACH HAVING A DIAMETER SUFFICIENTLY SMALL TO PREVENT THE RETURN OF CONDENSED WATER BACK INTO THE INTERIOR OF SAID HOLDER.
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) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |