US4357898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet shield
Assignee: Individual
•
Filing: 1981-03-12
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Granted: 1982-11-09
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Expires: 2001-03-12
Abstract
Abstract A shield for protecting the nap, or pile, at the edges of carpets or the like while painting adjacent surfaces of adjoining walls. The shield is formed of a substantially planar isosceles trapezoidal guard and platform, and a substantially planar rectangular runner. The guard and runner support the platform above the upper surface of the carpet. The angles between the sides and major base of the guard and the angle between the guard and the platform are chosen so that the pile of the carpet does not, as the shield slides over the carpet, spring back into contact with adjacent painted wall surfaces. The guard, platform and runner are preferably made of a single sheet of planar material.
Inventors
- 👤 Daniel R. Fehrenbacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:16
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/16; B05B12/20; B05B12/28; B05B12/40; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24628; Y10T428/24653
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
251 words
A shield for protecting the pile of carpeting while painting or staining adjacent surfaces of adjoining walls, said shield comprising: a substantially planar substantially isosceles trapezoidal guard having two sides, a major base, and a minor base; a substantially planar substantially isosceles trapezoidal platform having two sides, a major base and a minor base, said platform extending at an angle A from said guard with the minor base of the guard substantially coinciding with the major base of the platform; a substantially planar and substantially rectangular runner having two bases and two sides, said runner extending at an angle B from the platform with one of the bases of said runner substantially coinciding with the minor base of said platform, said guard and said runner being dimensioned so that the free base of the runner is substantially parallel to the major base of the guard and the platform is substantially parallel to a plane determined by the major base of the guard and the free base of the runner, substantially only the major base of the guard and the free base of the runner are adapted to contact the carpeting when the shield is in use; and the angles C determined by the sides and major bases of the guard and the platform being substantially equal, whereby pile of the carpeting emerging from under the guard as the shield slides over the carpeting in a direction substantially parallel to the major base of the guard does not spring back past vertical.
Claim 2
Dependent Claim
251 words
A shield for protecting the pile of carpeting while painting or staining adjacent surfaces of adjoining walls, said shield comprising: a substantially planar substantially isosceles trapezoidal guard having two sides, a major base, and a minor base; a substantially planar substantially isosceles trapezoidal platform having two sides, a major base and a minor base, said platform extending at an angle A from said guard with the minor base of the guard substantially coinciding with the major base of the platform; a substantially planar and substantially rectangular runner having two bases and two sides, said runner extending at an angle B from the platform with one of the bases of said runner substantially coinciding with the minor base of said platform, said guard and said runner being dimensioned so that the free base of the runner is substantially parallel to the major base of the guard and the platform is substantially parallel to a plane determined by the major base of the guard and the free base of the runner, substantially only the major base of the guard and the free base of the runner are adapted to contact the carpeting when the shield is in use; and the angles C determined by the sides and major bases of the guard and the platform being substantially equal, whereby pile of the carpeting emerging from under the guard as the shield slides over the carpeting in a direction substantially parallel to the major base of the guard does not spring back past vertical.
Claim 3
Dependent Claim
29 words
A shield as defined in claim 1 in which the angle A substantially equals 150°, the angle B substantially equals 90°, and the angles C each substantially equals 75°.
References Cited (Backward Citations)
GB724696A
Cited
US4051808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |