Patent US3296952A successfully refreshed from Google Patents.
US3296952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blast closure
Assignee: Mosler Safe Co
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Filing: 1964-06-19
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Granted: 1967-01-10
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Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Harry J Lingal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:17
CPC Classifications
A; A62; A62B; A62B13/00; F; F16; F16K; F16K17/00; F16K17/006; Y; Y10; Y10S; Y10S454/00; Y10S454/902; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A BLAST CLOSURE COMPRISING, A FRAME HAVING AT LEAST ONE GRATING RECEIVING OPENING, AT LEAST ONE GRATING HAVING SPACED BARS WITH AIR PASSAGEWAYS THEREBETWEEN, EACH GRATING POSTIONED WITHIN A GRATING RECEIVING OPENING, MEANS ELASTICALLY SECURING EACH GRATING TO SAID FRAME IN SAID OPENING, SAID MEANS ALLOWING UNIDIRECTIONAL MOVEMENT OF EACH GRATING, AN ELASTOMERIC GRID SECURED TO EACH GRATING, SAID GRID HAVING SPACED STRIPS COEXTENSIVE WITH AND ENGAGING SAID BARS, A PLURALITY OF SPACED CLOSURE RODS ENGAGEABLE WITH THE EDGES OF ADJACENT STRIPS, SAID RODS PROVIDING A CLOSURE OF THE AIR PASSAGEWAYS BETWEEN SAID BARS, ALIGNING MEANS SECURED TO SAID FRAME FOR MAINTAINING THE SPACED RELATIONSHIP OF SAID RODS, YIELDABLE MEANS CONNECTED TO SAID RODS AND TO SAID FRAME FOR HOLDING SAID RODS AWAY FROM SAID GRID, AND MEANS SECURED TO SAID GRATING FOR MAINTAINING THE VERTICAL ALIGNMENT OF SAID RODS.
Claim 2
Dependent Claim
140 words
A BLAST CLOSURE COMPRISING, A FRAME HAVING AT LEAST ONE GRATING RECEIVING OPENING, AT LEAST ONE GRATING HAVING SPACED BARS WITH AIR PASSAGEWAYS THEREBETWEEN, EACH GRATING POSTIONED WITHIN A GRATING RECEIVING OPENING, MEANS ELASTICALLY SECURING EACH GRATING TO SAID FRAME IN SAID OPENING, SAID MEANS ALLOWING UNIDIRECTIONAL MOVEMENT OF EACH GRATING, AN ELASTOMERIC GRID SECURED TO EACH GRATING, SAID GRID HAVING SPACED STRIPS COEXTENSIVE WITH AND ENGAGING SAID BARS, A PLURALITY OF SPACED CLOSURE RODS ENGAGEABLE WITH THE EDGES OF ADJACENT STRIPS, SAID RODS PROVIDING A CLOSURE OF THE AIR PASSAGEWAYS BETWEEN SAID BARS, ALIGNING MEANS SECURED TO SAID FRAME FOR MAINTAINING THE SPACED RELATIONSHIP OF SAID RODS, YIELDABLE MEANS CONNECTED TO SAID RODS AND TO SAID FRAME FOR HOLDING SAID RODS AWAY FROM SAID GRID, AND MEANS SECURED TO SAID GRATING FOR MAINTAINING THE VERTICAL ALIGNMENT OF SAID RODS.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |