US3708940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling tile
Assignee: Individual
•
Filing: 1970-07-06
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Granted: 1973-01-09
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Expires: 1990-07-06
Abstract
Abstract A thin sheet plastic tile for covering ceilings, walls and other structural surfaces is molded with edge portions, at least one of which has an anchoring flap adapted to be stapled to the covered surface underlying the interlocked, abutting edge portion of an adjacent tile. The tile is molded in a vacuum forming device having a loop forming member which is removable with the molded tile from the mold body.
Inventors
- 👤 J Harman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:15
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
In an assembly of surface covering members made of thin and flexible sheets of non-metallic material formed with corrugations extending between a surface mounting plane and a parallel spaced exposure plane to resist buckling, each of said members having an interlocking edge portion spaced from the corrugations thereof including a flange extending transverse to said planes and a loop formation with reentrant curvature projecting from each of the flanges and terminating substantially at the surface mounting plane, a portion of the reentrant curvature extending from each of the flanges toward the exposure plane, the loop formation projecting from one of the flanges on one of the members being received within and in continuous contact throughout with the loop formation projecting from the other of the flanges of an adjacent member, and an anchor flap extending from the loop formation of said adjacent member substantially in said surface mounting plane, said flanges extending in abutment with each other from the exposure plane in closer adjacency to the anchor flap to cooperate with the interlocked loop formations in rigidifying the assembly along the interlocking edge portions between the corrugations of the respective covering members.
Claim 2
Dependent Claim
192 words
In an assembly of surface covering members made of thin and flexible sheets of non-metallic material formed with corrugations extending between a surface mounting plane and a parallel spaced exposure plane to resist buckling, each of said members having an interlocking edge portion spaced from the corrugations thereof including a flange extending transverse to said planes and a loop formation with reentrant curvature projecting from each of the flanges and terminating substantially at the surface mounting plane, a portion of the reentrant curvature extending from each of the flanges toward the exposure plane, the loop formation projecting from one of the flanges on one of the members being received within and in continuous contact throughout with the loop formation projecting from the other of the flanges of an adjacent member, and an anchor flap extending from the loop formation of said adjacent member substantially in said surface mounting plane, said flanges extending in abutment with each other from the exposure plane in closer adjacency to the anchor flap to cooperate with the interlocked loop formations in rigidifying the assembly along the interlocking edge portions between the corrugations of the respective covering members.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |