US3145642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-louver grill
Assignee: AIR GUIDE PLASTICS CORP
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Filing: 1960-06-08
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Granted: 1964-08-25
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Expires: 1980-06-08
Abstract
No abstract record available.
Inventors
- 👤 Alan L Radcliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A DIFFUSER APPARATUS COMPRISING A FRAME, A PLURALITY OF SUBSTANTIALLY PARALLEL LOUVERS ROTATABLY SUPPORTED AT THEIR ENDS BY SAID FRAME, EACH LOUVER INCLUDING AN APERTURE THEREIN, AN ARM EXTENDING ACROSS EACH APERTURE, A CONNECTOR MEMBER, MEANS COUPLING EACH LOUVER TO SAID MEMBER, SAID MEANS INCLUDING PAIRS OF SPACED FINGERS PROJECTING FROM ONE EDGE OF SAID MEMBER AND DEFINING JAWS, EACH JAW EMBRACING THE ARM ON ONE OF SAID LOUVERS AT A POINT SPACED TO ONE SIDE OF THE AXIS OF ROTATION OF EACH RESPECTIVE LOUVER, THE SPACE BETWEEN THE FINGERS OF EACH JAW AT THE MOUTH THEREOF BEING LESS THAN THE TRANSVERSE DIMENSION OF SAID ARMS, AND EACH ARM BEING ROTATABLY DISPOSED WITHIN ITS JAW.
Claim 2
Dependent Claim
116 words
IN A DIFFUSER APPARATUS COMPRISING A FRAME, A PLURALITY OF SUBSTANTIALLY PARALLEL LOUVERS ROTATABLY SUPPORTED AT THEIR ENDS BY SAID FRAME, EACH LOUVER INCLUDING AN APERTURE THEREIN, AN ARM EXTENDING ACROSS EACH APERTURE, A CONNECTOR MEMBER, MEANS COUPLING EACH LOUVER TO SAID MEMBER, SAID MEANS INCLUDING PAIRS OF SPACED FINGERS PROJECTING FROM ONE EDGE OF SAID MEMBER AND DEFINING JAWS, EACH JAW EMBRACING THE ARM ON ONE OF SAID LOUVERS AT A POINT SPACED TO ONE SIDE OF THE AXIS OF ROTATION OF EACH RESPECTIVE LOUVER, THE SPACE BETWEEN THE FINGERS OF EACH JAW AT THE MOUTH THEREOF BEING LESS THAN THE TRANSVERSE DIMENSION OF SAID ARMS, AND EACH ARM BEING ROTATABLY DISPOSED WITHIN ITS JAW.
References Cited (Backward Citations)
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US1265055A
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US1706338A
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
US2996970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |