US3916774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable vertical louver system
Assignee: Individual
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Filing: 1974-11-25
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Granted: 1975-11-04
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Expires: 1994-11-25
Abstract
Abstract An adjustable vertical louver system for providing privacy and wind deterrence when in a closed position, and allowing a free flow of air when in an open position. Louver slats are vertically disposed between a top support member and a bottom support member. The support members are secured to a permanent structure such as a house or wall member. One side of the slats is pivotally mounted between the support members. A draw bar is secured to one end of the louvered slats. A bracket is secured to the draw bar with opposite ends of a guy wire secured to the bracket. Pulleys are positioned on rigid extensions of the support members for providing a travel path for the guy wire. Movement of the draw bar enables the louver slats to be positioned between any opened and closed position. The slats can be moved to any desired position and are not displaced by gusts of wind due to spring loading of the guy wire.
Inventors
- 👤 Robert L Labrec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:26
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/14; E04H17/1413; E04H17/1445; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/084; E06B9/00; E06B9/24; E06B9/26; E06B9/36; E06B9/367; F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
181 words
An adjustable vertical louver system, comprising: a plurality of vertically disposed louver slats each slat defined by a top end, a bottom end, a pivotable side, and a free side; a top support member and a bottom support member; pivot means adjacent the pivot side of each of said slats for pivotally interconnecting said top support member and the top ends of said slats; pivot means adjacent the pivot side of each of said slats for pivotally interconnecting said bottom support member and the bottom ends of said slats; a drawbar spanning across the top ends of said plurality of slats; pivot means adjacent the free side of each of said slats for pivotally interconnecting said draw bar and the top ends of said slats; and means for adjusting the openings between said louver slats in a plane parallel to said drawbar in one of a plurality of positions, said means comprising guy wire attached to said drawbar, pulleys for providing a travel path for said guy wire, and a spring loaded pulley forming a continuation of said guy wire path.
Claim 2
Dependent Claim
181 words
An adjustable vertical louver system, comprising: a plurality of vertically disposed louver slats each slat defined by a top end, a bottom end, a pivotable side, and a free side; a top support member and a bottom support member; pivot means adjacent the pivot side of each of said slats for pivotally interconnecting said top support member and the top ends of said slats; pivot means adjacent the pivot side of each of said slats for pivotally interconnecting said bottom support member and the bottom ends of said slats; a drawbar spanning across the top ends of said plurality of slats; pivot means adjacent the free side of each of said slats for pivotally interconnecting said draw bar and the top ends of said slats; and means for adjusting the openings between said louver slats in a plane parallel to said drawbar in one of a plurality of positions, said means comprising guy wire attached to said drawbar, pulleys for providing a travel path for said guy wire, and a spring loaded pulley forming a continuation of said guy wire path.
Claim 3
Dependent Claim
24 words
A louver system in accordance with claim 1 wherein said guy wire is made of steel having a low coefficient of expansion and contraction.
Claim 4
Dependent Claim
57 words
A louver system in accordance with claim 1 wherein said louver slats are movable to an infinite number of positions from a plane perpendicular to a plane defined by said support members, to a plane parallel thereto, said louvers forming a singlE plane and thereby a closed surface when in a plane parallel to said support members.
Claim 5
Dependent Claim
31 words
A louver system in accordance with claim 1 wherein said adjusting means additionally includes a bracket centrally secured to said drawbar to which opposite ends of said guy wire are attached.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |