US4680910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow-louvered ceilings
Assignee: Individual
•
Filing: 1985-09-20
•
Granted: 1987-07-21
•
Expires: 2005-09-20
Abstract
Abstract A louvered ceiling construction especially suited for parabolic louvers is claimed. Runners, of the same hollow channel shape as the louver members, are provided with openings into which extensions carried by the louver members are secured. The extensions are entirely concealed within the channels so that a smooth and uniform appearance is presented from below.
Inventors
- 👤 William E. Perk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:36
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/34; E04B9/345
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
174 words
In a louvered ceiling comprising panels of channel-shaped louver members suspended from channel-shaped runners, the improvement comprising a channel-shaped runner having a first sidewall and having an opening in said first sidewall; a channel-shaped louver member having second and third sidewalls with ends abutting said first sidewall, such that said opening in said first sidewall lies between said two abutting ends of said second and third sidewalls; extension means carried by said channel-shaped louver member, said extension means being spring-movable and extending into said opening in said first sidewall; said extension means being insertable into and removable from said opening in said first sidewall without deformation of said first sidewall and said extension means being concealed within said runner or said louver member, or within both, after said louvered ceiling is installed; and said extension means comprising a spring and a plunger member carried within said channel-shaped louver member, said spring tending to urge said plunger member in a direction parallel to said channel-shaped louver member and toward the interior of said channel-shaped runner.
Claim 2
Dependent Claim
174 words
In a louvered ceiling comprising panels of channel-shaped louver members suspended from channel-shaped runners, the improvement comprising a channel-shaped runner having a first sidewall and having an opening in said first sidewall; a channel-shaped louver member having second and third sidewalls with ends abutting said first sidewall, such that said opening in said first sidewall lies between said two abutting ends of said second and third sidewalls; extension means carried by said channel-shaped louver member, said extension means being spring-movable and extending into said opening in said first sidewall; said extension means being insertable into and removable from said opening in said first sidewall without deformation of said first sidewall and said extension means being concealed within said runner or said louver member, or within both, after said louvered ceiling is installed; and said extension means comprising a spring and a plunger member carried within said channel-shaped louver member, said spring tending to urge said plunger member in a direction parallel to said channel-shaped louver member and toward the interior of said channel-shaped runner.
Claim 3
Dependent Claim
27 words
The improved louvered ceiling of claim 1 and further comprising release means carried by said spring-driven plunger member, said release means permitting the compression of said spring.
References Cited (Backward Citations)
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Cited
US2939543A
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US3093221A
Cited
US3016997A
Cited
US3378976A
Cited
US4492066A
Cited
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Cited
US4601153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |