US4408428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended panel ceiling having impact absorbent panel retaining clip assemblies
Assignee: United States Gypsum Co
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Filing: 1982-09-28
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Granted: 1983-10-11
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Expires: 2002-09-28
Abstract
Abstract Panels resting in a suspended grid are rendered abuseresistant by mounting two-piece retaining clips atop the runners in the grid. The clip assemblies comprise a torsional/flexural spring mated with a clinch fastener. The spring is a piece of bent music wire having a central U-shaped segment, two opposing legs angling outwardly and downwardly from the upright arms of the U to a level below the cross member of the U. The clinch fastener is a piece of flat spring steel bent into the shape of a U, the bight of the U being a channel connecting two straps, each of which has a keeper at its distal end which turns inward and upward into the space between the two straps. The cross member of the spring fits into the channel of the clinch fastener and the unit is snapped onto the bead atop a grid runner so that the cross member is interposed between the bead and the channel. The retaining clip assemblies may be installed before or after the panels are installed in the grid or the panels and clip assemblies may be installed sequentially. The legs of the spring bear down on the panels and the spring absorbs the impact of a ball or other object thrown upward at the ceiling.
Inventors
- 👤 Michael E. Brooke
- 👤 Alan C. Wendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:18
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/22; E04B9/24; E04B9/241; E04B9/242
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
180 words
A ceiling comprising: a suspended grid of main runners and cross runners, said runners having a vertical web and horizontal flanges forming an inverted T in cross section, the webs of at least the cross runners having a lateral abutment; a plurality of ceiling panels resting on said horizontal flanges; a clinch fastener mounted on said web by resilient frictional engagement with said lateral abutment, said clinch fastener having two spaced-apart, upright straps, a channel continuous with and connecting said straps at the apex of said fastener, each strap having a keeper distal from said apex and extending inwardly and upwardly into the space therebetween, said channel and straps straddling the web and said keeper biting into said abutment, and a spring having a central U-shaped segment having two upright arms and a cross member between said arms, said cross member being interposed co-axially within said channel, and divergent legs extending downward from the arms of the U at an acute angle to the vertical plane passing through both arms, said legs resting on the inner faces of adjacent panels.
Claim 2
Dependent Claim
180 words
A ceiling comprising: a suspended grid of main runners and cross runners, said runners having a vertical web and horizontal flanges forming an inverted T in cross section, the webs of at least the cross runners having a lateral abutment; a plurality of ceiling panels resting on said horizontal flanges; a clinch fastener mounted on said web by resilient frictional engagement with said lateral abutment, said clinch fastener having two spaced-apart, upright straps, a channel continuous with and connecting said straps at the apex of said fastener, each strap having a keeper distal from said apex and extending inwardly and upwardly into the space therebetween, said channel and straps straddling the web and said keeper biting into said abutment, and a spring having a central U-shaped segment having two upright arms and a cross member between said arms, said cross member being interposed co-axially within said channel, and divergent legs extending downward from the arms of the U at an acute angle to the vertical plane passing through both arms, said legs resting on the inner faces of adjacent panels.
Claim 3
Dependent Claim
10 words
The ceiling of claim 1 wherein said straps are convergent.
Claim 4
Dependent Claim
15 words
The ceiling of claim 1 wherein said keepers are acutely angular extensions of the straps.
Claim 5
Dependent Claim
14 words
The ceiling of claim 1 wherein said keepers are tongues jutting from said straps.
Claim 6
Dependent Claim
33 words
The ceiling of claim 1 wherein the spring further comprises first and second torsional spindles, each of which connects an arm to its respective leg, said torsional spindles being perpendicular to said arms.
Claim 7
Dependent Claim
147 words
A retaining clip assembly for ceiling panels resting in a suspended grid, said clip comprising: a spring having a central U-shaped segment having two upright arms and a cross member between said arms, a first leg connected to one arm at an acute angle to the vertical plane which passes through both arms and extending below the horizontal plane of said cross member, and a second leg connected to the other arm at an acute angle to said vertical plane and extending below said horizontal plane, said first and second legs extending in opposite directions from said vertical plane, and a clinch fastener having two spaced-apart straps, a channel continuous with and connecting said straps, each strap having a keeper distal from said channel and extending inward and upward into the space therebetween, said channel straddling the cross member of the central U-shaped segment of said spring.
Claim 8
Dependent Claim
147 words
A retaining clip assembly for ceiling panels resting in a suspended grid, said clip comprising: a spring having a central U-shaped segment having two upright arms and a cross member between said arms, a first leg connected to one arm at an acute angle to the vertical plane which passes through both arms and extending below the horizontal plane of said cross member, and a second leg connected to the other arm at an acute angle to said vertical plane and extending below said horizontal plane, said first and second legs extending in opposite directions from said vertical plane, and a clinch fastener having two spaced-apart straps, a channel continuous with and connecting said straps, each strap having a keeper distal from said channel and extending inward and upward into the space therebetween, said channel straddling the cross member of the central U-shaped segment of said spring.
Claim 9
Dependent Claim
13 words
The retaining clip assembly of claim 6 wherein said straps are substantially parallel.
Claim 10
Dependent Claim
12 words
The retaining clip assembly of claim 6 wherein said straps are convergent.
Claim 11
Dependent Claim
17 words
The retaining clip assembly of claim 6 wherein said keepers are acutely angular extensions of the straps.
Claim 12
Dependent Claim
17 words
The retaining clip assembly of claim 6 wherein said keepers are tongues jutting inward from said straps.
Claim 13
Dependent Claim
34 words
The retaining clip assembly of claim 6 wherein the spring further comprises first and second torsional spindles, each of which connects an arm to its respective leg, said spindles being perpendicular to said arms.
Claim 14
Dependent Claim
38 words
The retaining clip assembly of any one of claims 6 through 11 wherein said legs each have a foot, said feet extending in opposite directions at right angles to the vertical plane in which their respective legs lie.
Claim 15
Dependent Claim
22 words
The retaining clip assembly of claim 12 wherein each foot is directed toward the vertical plane in which the other leg lies.
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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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |