Patent US3715844A successfully refreshed from Google Patents.
US3715844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor construction including carpeted trench headers
Assignee: Individual
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Filing: 1971-02-24
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Granted: 1973-02-13
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Expires: 1991-02-24
Abstract
Abstract In a floor construction especially of the type which includes a floor slab and a trench header embedded in the floor slab and covered by a trench header cover, carpet on the floor slab and on the trench header cover has abutting edges where it meets. A carpet strip is secured to the abutting edges, having an elongated base underlying the carpet backing, and having an upstanding edge portion secured to the base and running along the edge of the carpet. The edge portion with the base makes an angle between 80* and 84*, preferably 83* . The edge portion at its top is below the top of the pile, and it extends above the carpet backing, locking the carpet at the edge. The carpet strip is secured to the carpet and to the floor slab or the trench header cover as the case may be. The back of the carpet strip preferably is of diminishing thickness at the edge remote from the upstanding edge portion.
Inventors
- 👤 R Breading
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:59
CPC Classifications
E; E04; E04F; E04F19/00; E04F19/08; E04B; E04B5/00; E04B5/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
In a building, a floor slab having a horizontal top surface, an electrical distribution system including a trench header in the floor slab and having an open top, a trench header cover on the trench header flush with the top of the floor slab, carpet secured on the floor slab having abutting edges around the trench header cover, carpet secured to the trench header cover having abutting edges where it meets the carpet on the floor slab, the carpet having pile and backing, and a carpet strip at each of the abutting edges having a base underlying the carpet and secured to the carpet and to the floor slab and the trench header cover, as the case may be, and having an upstanding edge secured to the base, extending along the edges of the carpet back-to-back with the upstanding edge of the similar strip, making an angle of 80* to 84* with the base of the strip, having a top below the top of the pile and overlying the backing of the carpet.
Claim 2
Dependent Claim
173 words
In a building, a floor slab having a horizontal top surface, an electrical distribution system including a trench header in the floor slab and having an open top, a trench header cover on the trench header flush with the top of the floor slab, carpet secured on the floor slab having abutting edges around the trench header cover, carpet secured to the trench header cover having abutting edges where it meets the carpet on the floor slab, the carpet having pile and backing, and a carpet strip at each of the abutting edges having a base underlying the carpet and secured to the carpet and to the floor slab and the trench header cover, as the case may be, and having an upstanding edge secured to the base, extending along the edges of the carpet back-to-back with the upstanding edge of the similar strip, making an angle of 80* to 84* with the base of the strip, having a top below the top of the pile and overlying the backing of the carpet.
Claim 3
Dependent Claim
173 words
In a building, a floor slab having a horizontal top surface, an electrical distribution system including a trench header in the floor slab and having an open top, a trench header cover on the trench header flush with the top of the floor slab, carpet secured on the floor slab having abutting edges around the trench header cover, carpet secured to the trench header cover having abutting edges where it meets the carpet on the floor slab, the carpet having pile and backing, and a carpet strip at each of the abutting edges having a base underlying the carpet and secured to the carpet and to the floor slab and the trench header cover, as the case may be, and having an upstanding edge secured to the base, extending along the edges of the carpet back-to-back with the upstanding edge of the similar strip, making an angle of 80* to 84* with the base of the strip, having a top below the top of the pile and overlying the backing of the carpet.
Claim 4
Dependent Claim
173 words
In a building, a floor slab having a horizontal top surface, an electrical distribution system including a trench header in the floor slab and having an open top, a trench header cover on the trench header flush with the top of the floor slab, carpet secured on the floor slab having abutting edges around the trench header cover, carpet secured to the trench header cover having abutting edges where it meets the carpet on the floor slab, the carpet having pile and backing, and a carpet strip at each of the abutting edges having a base underlying the carpet and secured to the carpet and to the floor slab and the trench header cover, as the case may be, and having an upstanding edge secured to the base, extending along the edges of the carpet back-to-back with the upstanding edge of the similar strip, making an angle of 80* to 84* with the base of the strip, having a top below the top of the pile and overlying the backing of the carpet.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |