Patent FR1333889A successfully refreshed from Google Patents.
Patent US3594966A successfully refreshed from Google Patents.
US3594966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tile trim for trench duct cover plates
Assignee: Butler Manufacturing Co
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Filing: 1969-08-14
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Granted: 1971-07-27
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Expires: 1989-08-14
Abstract
Abstract A trench duct cover having, in the shipping condition, trim along each longitudinal edge and a filler piece along each transverse edge, the trim and filler pieces being flush with the surface of the cover and the cover, in its installation condition, having the trim along the longitudinal edges reversed with portions extending above the cover surface and a spacer along one transverse edge and an offset along the other transverse edge for interlocking with the adjacent cover, both the spacer and offset having portions extending above the cover surface, all of said above-the-surface portions being for use in protecting floor covering on the cover.
Inventors
- 👤 Stephen M Janic
- 👤 Michael J Cottrell
- 👤 Frederick W Hudnall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:17
CPC Classifications
E; E04; E04F; E04F19/00; E04F19/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
399 words
In combination for a trenchduct: an elongated rectangular-shaped cover having first and second transverse and longitudinal edges; a pair of tile trim respectively removably secured along opposite longitudinal cover edges and each trim being reversible as between a shipping position and an installation position, in the shipping position, each trim having a flange abutting a longitudinal cover edge and in the installation position having a flange abutting a longitudinal cover edge and projecting above the top surface of the cover for use in protecting floor covering on the cover and each trim being in the shipping position and being connected to the cover; first and second sets of threaded holes respectively disposed along said first and second transverse edges; a throwaway L-shaped filler piece connected to the cover and extending along said first transverse edge and having a leg extending under the cover and secured thereto by a first set of screws in said first set of threaded holes and also having a flange abutting the first transverse edge and being flush with the top surface of the cover; a second set of screws threaded in said second set of threaded holes, the end of each screw being flush with the top surface of the cover; an L-shaped spacer for use in being connected to the cover when the second set of screws has been removed and the trim is in the installation position, the spacer, when connected, extending along said second transverse edge and having a leg extending under the cover and secured thereto by screws threaded in said second set of threaded holes and a flange abutting the second transverse edge and projecting above the top surface of the cover for use in protecting floor covering on the cover; and an offset for use in being connected to the cover when the filler piece has been removed and the tile trim is in the installation position, the offset, when connected, extending along said first transverse edge and having a leg extending under the cover and secured thereto by screws in said first set of threaded holes and the offset having a flange abutting said first transverse edge and projecting above the top surface of the cover for use in protecting covering on the cover and the offset also having a second leg extending normal to last said flange and projecting outwardly away from the first transverse edge.
Claim 2
Dependent Claim
399 words
In combination for a trenchduct: an elongated rectangular-shaped cover having first and second transverse and longitudinal edges; a pair of tile trim respectively removably secured along opposite longitudinal cover edges and each trim being reversible as between a shipping position and an installation position, in the shipping position, each trim having a flange abutting a longitudinal cover edge and in the installation position having a flange abutting a longitudinal cover edge and projecting above the top surface of the cover for use in protecting floor covering on the cover and each trim being in the shipping position and being connected to the cover; first and second sets of threaded holes respectively disposed along said first and second transverse edges; a throwaway L-shaped filler piece connected to the cover and extending along said first transverse edge and having a leg extending under the cover and secured thereto by a first set of screws in said first set of threaded holes and also having a flange abutting the first transverse edge and being flush with the top surface of the cover; a second set of screws threaded in said second set of threaded holes, the end of each screw being flush with the top surface of the cover; an L-shaped spacer for use in being connected to the cover when the second set of screws has been removed and the trim is in the installation position, the spacer, when connected, extending along said second transverse edge and having a leg extending under the cover and secured thereto by screws threaded in said second set of threaded holes and a flange abutting the second transverse edge and projecting above the top surface of the cover for use in protecting floor covering on the cover; and an offset for use in being connected to the cover when the filler piece has been removed and the tile trim is in the installation position, the offset, when connected, extending along said first transverse edge and having a leg extending under the cover and secured thereto by screws in said first set of threaded holes and the offset having a flange abutting said first transverse edge and projecting above the top surface of the cover for use in protecting covering on the cover and the offset also having a second leg extending normal to last said flange and projecting outwardly away from the first transverse edge.
Claim 3
Dependent Claim
37 words
The combination of claim 1 wherein each said tile trim projects outwardly of said first and second transverse cover edges and said filler piece, said spacer and said offset when connected to the cover engaging the trim.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |