Patent US3254451A successfully refreshed from Google Patents.
US3254451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable louver structure
Assignee: Individual
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Filing: 1964-04-20
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Granted: 1966-06-07
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Russell M Wills
- 👤 William L Mccarter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:59
CPC Classifications
E; E04; E04F; E04F10/00; E04F10/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN ADJUSTABLE LOUVER STRUCTURE COMPRISING: A LOUVER BLADE HAVING A CURVED SIDE EDGE PORTION, THE OPPOSED CURVED SURFACES OF SAID EDGGE PORTION HAVING, RESPECTIVELY, CONSTANT RADII OF CURVATURE BOTH WITH RESPECT TO SUBSTANTIALLY THE SAME CENTER OF CURVATURE, COOPERATIVE CLAMPING MEANS, INCLUDING A PAIR OF SEPARABLE CURVED CLAMPING SURFACES FOR CLAMPING SAID CURVED EDGE PORTION THEREBETWEEN, THE CURVATURE OF EACH SAID CLAMPING SURFACE CONFORMING, RESPECTIVELY, TO THE CURVATURE OF THE ONE OF SAID OPPOSED CURVED SURFACES THAT SAID CLAMPING SURFACE IS ADAPTED TO ENGAGE SUCH THAT SAID CLAMPING SURFACE IS IS SLIDABLE RELATIVE TO AND BETWEEN SAID CURVED CLAMPING SURFACES TO ADJUST THE ANGLE OF INCLINATION OF SAID BLADE, AND PRESSURE MEANS IN ASSOCIATED WITH SAID CLAMPING MEANS FOR APPLYING CLAMPING PRESSURE THROUGH SAID CURVED CLAMPING SURFACES TO CLAMP SAID CURVED SIDE EDGE PORTION THEREBETWEEN.
Claim 2
Dependent Claim
135 words
AN ADJUSTABLE LOUVER STRUCTURE COMPRISING: A LOUVER BLADE HAVING A CURVED SIDE EDGE PORTION, THE OPPOSED CURVED SURFACES OF SAID EDGGE PORTION HAVING, RESPECTIVELY, CONSTANT RADII OF CURVATURE BOTH WITH RESPECT TO SUBSTANTIALLY THE SAME CENTER OF CURVATURE, COOPERATIVE CLAMPING MEANS, INCLUDING A PAIR OF SEPARABLE CURVED CLAMPING SURFACES FOR CLAMPING SAID CURVED EDGE PORTION THEREBETWEEN, THE CURVATURE OF EACH SAID CLAMPING SURFACE CONFORMING, RESPECTIVELY, TO THE CURVATURE OF THE ONE OF SAID OPPOSED CURVED SURFACES THAT SAID CLAMPING SURFACE IS ADAPTED TO ENGAGE SUCH THAT SAID CLAMPING SURFACE IS IS SLIDABLE RELATIVE TO AND BETWEEN SAID CURVED CLAMPING SURFACES TO ADJUST THE ANGLE OF INCLINATION OF SAID BLADE, AND PRESSURE MEANS IN ASSOCIATED WITH SAID CLAMPING MEANS FOR APPLYING CLAMPING PRESSURE THROUGH SAID CURVED CLAMPING SURFACES TO CLAMP SAID CURVED SIDE EDGE PORTION THEREBETWEEN.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |