US3591980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louvre arrangements
Assignee: HONG KONG CHIAP HUA Manufacturing CO 194
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Filing: 1969-05-01
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Granted: 1971-07-13
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Expires: 1989-05-01
Abstract
Abstract A louvre arrangement comprising a plurality of louvre boards each mounted at their ends by mounting members of thermoplastic materials. The mounting members each including an integral projection, to engage in apertures in a frame of an aperture in a wall which the louvre arrangement is to obstruct, to form bearings about which the louvre boards can be pivoted, and also including an integral projection to form weather stripping to seal the gap between the respective mounting member and the frame.
Inventors
- 👤 Raymond Shu Kwok Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:21
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1426; E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/084; F24F13/1486; F24F13/15; F24F2013/1473
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
286 words
A louvre arrangement comprising a louvre board; a supporting frame having side members formed to present apertures therein; a mounting member formed of a thermoplastic material for mounting one end of said louvre board in the frame and a further mounting member formed of a thermoplastic material for mounting the other end of said louvre board in the frame in a manner to permit pivotal movement of said louvre board with respect to said frame between an open position and a closed position; an integral projection on each said mounting member and said further mounting member, said integral projections engaging in said apertures in said side members of said frame to form pivot bearings for mounting said mounting member and said further mounting member in said frame; integral sealing means projecting from one face of each said mounting member and said further mounting member for sealing said mounting member and said further mounting member with respect to said frame when said louvre board is in said closed position; elongated flanges spaced apart on each said mounting member and said further mounting member, said elongated flanges extending in a vertical direction in the closed position of the louvre board to define a channel therebetween to receive said louvre board ends; a securing flange on each said mounting member and said further mounting member extending perpendicular to said elongated flanges adjacent a discontinuity in an adjacent one of said elongated flanges; a projecting flange on said louvre board at right angles to the general plane of said louvre board, said projecting flange extending through said discontinuity, and securing means for securing said projecting flange to said securing flange on each said mounting member and said further mounting member.
Claim 2
Dependent Claim
286 words
A louvre arrangement comprising a louvre board; a supporting frame having side members formed to present apertures therein; a mounting member formed of a thermoplastic material for mounting one end of said louvre board in the frame and a further mounting member formed of a thermoplastic material for mounting the other end of said louvre board in the frame in a manner to permit pivotal movement of said louvre board with respect to said frame between an open position and a closed position; an integral projection on each said mounting member and said further mounting member, said integral projections engaging in said apertures in said side members of said frame to form pivot bearings for mounting said mounting member and said further mounting member in said frame; integral sealing means projecting from one face of each said mounting member and said further mounting member for sealing said mounting member and said further mounting member with respect to said frame when said louvre board is in said closed position; elongated flanges spaced apart on each said mounting member and said further mounting member, said elongated flanges extending in a vertical direction in the closed position of the louvre board to define a channel therebetween to receive said louvre board ends; a securing flange on each said mounting member and said further mounting member extending perpendicular to said elongated flanges adjacent a discontinuity in an adjacent one of said elongated flanges; a projecting flange on said louvre board at right angles to the general plane of said louvre board, said projecting flange extending through said discontinuity, and securing means for securing said projecting flange to said securing flange on each said mounting member and said further mounting member.
Claim 3
Dependent Claim
39 words
The louvre arrangement claimed in claim 1, wherein on each said mounting member and said further mounting member, said elongated flange which includes said discontinuity extends a greater distance from its respective mounting member than the other elongated flange.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |