US3380372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air guide structure
Assignee: Hupp Corp
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Filing: 1966-08-01
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Granted: 1968-04-30
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert P Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:13
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
LOUVER STRUCTURE FOR GUIDING AIR FLOWING THROUGH AN OPENING HAVING TOP AND BOTTOM WALLS AND END WALLS COMPRISING A PLURALITY OF LOUVERS ADAPTED TO EXTEND HORIZONTALLY ACROSS SAID OPENING FROM ONE END WALL TO THE OTHER, MEANS SUPPORTING SAID LOUVERS AT THEIR OPPOSITE ENDS FOR OSCILLATION ABOUT HORIZONTAL AXES, ADDITIONAL MEANS SUPPORTING SAID LOUVERS ADJACENT THEIR MIDPOINT FOR ROTATION ABOUT SAID HORIZONTAL AXES, GENERALLY VERTICALLY EXTENDING LINK MEANS ATTACHED TO EACH OF SAID LOUVERS AND MOVABLE THEREWITH TO CONNECT SAID LOUVERS FOR COMOVEMENT ABOUT SAID HORIZONTAL AXES, AN ESSENTIALLY CIRCULAR CAM, AND A
Claim 2
Dependent Claim
93 words
LOUVER STRUCTURE FOR GUIDING AIR FLOWING THROUGH AN OPENING HAVING TOP AND BOTTOM WALLS AND END WALLS COMPRISING A PLURALITY OF LOUVERS ADAPTED TO EXTEND HORIZONTALLY ACROSS SAID OPENING FROM ONE END WALL TO THE OTHER, MEANS SUPPORTING SAID LOUVERS AT THEIR OPPOSITE ENDS FOR OSCILLATION ABOUT HORIZONTAL AXES, ADDITIONAL MEANS SUPPORTING SAID LOUVERS ADJACENT THEIR MIDPOINT FOR ROTATION ABOUT SAID HORIZONTAL AXES, GENERALLY VERTICALLY EXTENDING LINK MEANS ATTACHED TO EACH OF SAID LOUVERS AND MOVABLE THEREWITH TO CONNECT SAID LOUVERS FOR COMOVEMENT ABOUT SAID HORIZONTAL AXES, AN ESSENTIALLY CIRCULAR CAM, AND A
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |