Patent US3735497A successfully refreshed from Google Patents.
US3735497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flooring spacers
Assignee: Individual
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Filing: 1971-05-06
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Granted: 1973-05-29
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Expires: 1991-05-06
Abstract
Abstract A piece usable to maintain a slight space between groups of laid floor boards until the floor has been fully laid. The piece has a head adapted to be grasped between the fingers, a pendent tongue insertible into the space, and a wide base with feet seating the piece squarely on the floor boards adjoining the space.
Inventors
- 👤 W Boettcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:39
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/0092
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A spacer for laying wooden flooring with a space between selected adjacent floor boards and maintaining said borads in a space relationship, comprising a base portion to span said space and having a pair of flat bottom surfaces of sufficient width to rest on the top surfaces of said adjacent boards where they adjoin said space, an upward extension from said base having a constricted medial portion terminating in a head portion formed aS a gripping surface, and a medially-positioned, downwardlytapered, longitudinally extending tongue depending from the base portion.
Claim 2
Dependent Claim
89 words
A spacer for laying wooden flooring with a space between selected adjacent floor boards and maintaining said borads in a space relationship, comprising a base portion to span said space and having a pair of flat bottom surfaces of sufficient width to rest on the top surfaces of said adjacent boards where they adjoin said space, an upward extension from said base having a constricted medial portion terminating in a head portion formed aS a gripping surface, and a medially-positioned, downwardlytapered, longitudinally extending tongue depending from the base portion.
Claim 3
Dependent Claim
35 words
The structure of claim 1 wherein said tongue is of a taper and downward extension determined by the width of the said space which is calculated to suit the expansion factor of the flooring laid.
Claim 4
Dependent Claim
36 words
The structure of claim 1 wherein the bottom surfaces of of the base portion are arched on the under side to form feet along the outer edges of the arches, said feet having flat bottom surfaces.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |