US4809439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
True trace gauge
Assignee: Individual
•
Filing: 1987-10-21
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Granted: 1989-03-07
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Expires: 2007-10-21
Abstract
Abstract A carpet scribing device and gauge for measuring the size of a carpet module adjoining a baseboard. The device comprises a rod on which is slidably mounted a block encased in a bracket having a dependent portion which abuts against the edge of laid carpeting. The end of the rod which abuts against the floor board is provided with a needle extending angularly downwardly with its point in vertical alignment with said end of the rod. By reversal of the block on the rod, the device is useful for carpeting stairs.
Inventors
- 👤 Lawrence J. Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:22
CPC Classifications
A; A47; A47G; A47G27/00; A47G27/04; A47G27/0487; B; B25; B25H; B25H7/00; B25H7/02; B25H7/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
A modular carpet tile scribing device for scribing the rear of a carpet tile, comprising an elongated rod having, at one end, a hardened scribing needle extending angularly downwardly about 45° from the axis of the rod with its point in vertical alignment with said one end of the rod and constituting the sole scribing element, a block having an opening through which said rod is slidably mounted, a casing for said block having a vertically downwardly extending edge plate for abutting against the edge of laid carpet tile, and a screw for tightly clamping the block to said casing after said one end of the rod is abutted against a baseboard.
Claim 2
Dependent Claim
112 words
A modular carpet tile scribing device for scribing the rear of a carpet tile, comprising an elongated rod having, at one end, a hardened scribing needle extending angularly downwardly about 45° from the axis of the rod with its point in vertical alignment with said one end of the rod and constituting the sole scribing element, a block having an opening through which said rod is slidably mounted, a casing for said block having a vertically downwardly extending edge plate for abutting against the edge of laid carpet tile, and a screw for tightly clamping the block to said casing after said one end of the rod is abutted against a baseboard.
Claim 3
Dependent Claim
43 words
A carpet tile scribing device as recited in claim 1 wherein said screw is threaded to said block through its entire height and having a head for turning it, said casing having inwardly turned top portions serving as a stop for said block.
References Cited (Backward Citations)
US826618A
Cited
US2588757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |