US4412667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leg for chair base and cap therefore
Assignee: Leggett and Platt Canada Holdings Ltd
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Filing: 1981-07-27
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Granted: 1983-11-01
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Expires: 2001-07-27
Abstract
Abstract A chair leg and a protective cap therefor. The cap is adapted to fit over and be secured to the end portion of the chair leg. The cap has a small protrusion on the inside top surface which fits into and is secured by an aperture in the upper surface of the chair leg. The cap has also an aperture in the bottom surface which fits over and is secured by a portion of the socket which extends below the plane of the lower surface of the end portion of the chair leg. This new structure reduces significantly the cost of production by eliminating the need to grind and buff the end portion of the chair leg yet produces a smooth, safe and acceptable end for the chair leg.
Inventors
- 👤 Frank Doerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/002; A47C7/004; A47B; A47B95/00; A47B95/04; A47B95/043
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A chair leg and a protective cap therefore, said chair leg consisting of a leg portion and an end portion, said chair leg being rectangular in cross-section with a rounded end portion, with a first aperture in the top surface thereof, and a second aperture in the bottom surface thereof, a caster socket being inserted through said second aperture, the length of said caster socket being greater than the length of said end portion, said socket being welded inside of said end portion of said chair leg, said cap being adapted to fit over and be secured to said end portion of said leg and having a small protrusion on the inside top surface which is adapted to fit into and be secured by said first aperture.
Claim 2
Dependent Claim
127 words
A chair leg and a protective cap therefore, said chair leg consisting of a leg portion and an end portion, said chair leg being rectangular in cross-section with a rounded end portion, with a first aperture in the top surface thereof, and a second aperture in the bottom surface thereof, a caster socket being inserted through said second aperture, the length of said caster socket being greater than the length of said end portion, said socket being welded inside of said end portion of said chair leg, said cap being adapted to fit over and be secured to said end portion of said leg and having a small protrusion on the inside top surface which is adapted to fit into and be secured by said first aperture.
Claim 3
Dependent Claim
40 words
A chair leg and a protective cap therefore, as claimed in claim 1 wherein said cap has an aperture in the bottom surface thereof through which said caster socket extends when said cap is press fitted onto said end portion.
Claim 4
Dependent Claim
23 words
A chair leg and a protective cap therefore as claimed in claim 2 wherein said cap is made of a resilient, plastic material.
Claim 5
Dependent Claim
20 words
A chair leg and a protective cap therefore as claimed in claim 3 wherein said cap is made of polyethylene.
Claim 6
Dependent Claim
139 words
A steel chair leg and a resilient, plastic cap for use therewith, said chair leg consisting of a leg portion which is rectangular in cross-section with a rounded end portion, said end portion having a flat upper and a flat lower surface, and a first aperture in the upper surface and a second aperture in the lower surface, said end portion having a caster socket welded therein and extending marginally outwardly beyond the plane of the lower surface, said cap having a small protrusion on the inside top surface which is adapted to fit into and be secured by said first aperture, and an aperture in the bottom surface of said cap which is adapted to fit over and be secured by the portion of the socket extending beyond the plane of the lower surface of said end portion.
Claim 7
Dependent Claim
139 words
A steel chair leg and a resilient, plastic cap for use therewith, said chair leg consisting of a leg portion which is rectangular in cross-section with a rounded end portion, said end portion having a flat upper and a flat lower surface, and a first aperture in the upper surface and a second aperture in the lower surface, said end portion having a caster socket welded therein and extending marginally outwardly beyond the plane of the lower surface, said cap having a small protrusion on the inside top surface which is adapted to fit into and be secured by said first aperture, and an aperture in the bottom surface of said cap which is adapted to fit over and be secured by the portion of the socket extending beyond the plane of the lower surface of said end portion.
Claim 8
Dependent Claim
176 words
A chair which consists of a back and a seat portion, a chair control affixed to the undersurface of said seat and mounted on a vertically-aligned part, and a plurality of radially extended legs, each leg consisting of a leg portion which is rectangular in cross-section with a rounded end portion, said end portion having a flat upper and a flat lower surface and a first aperture in the upper surface and a second aperture in the lower surface, said end portion having a caster socket welded therein, and extending marginally outwardly beyond the place of the lower surface, and a resilient, plastic cap adapted to fit over and be retained on said end portion, said cap having a small protrusion on the inside top surface which is adapted to fit into and be secured by said first aperture, and an aperture in the bottom surface of said cap which is adapted to fit over and be secured by the portion of the socket extending beyond the plane of the lower portion of said end portion.
Claim 9
Dependent Claim
176 words
A chair which consists of a back and a seat portion, a chair control affixed to the undersurface of said seat and mounted on a vertically-aligned part, and a plurality of radially extended legs, each leg consisting of a leg portion which is rectangular in cross-section with a rounded end portion, said end portion having a flat upper and a flat lower surface and a first aperture in the upper surface and a second aperture in the lower surface, said end portion having a caster socket welded therein, and extending marginally outwardly beyond the place of the lower surface, and a resilient, plastic cap adapted to fit over and be retained on said end portion, said cap having a small protrusion on the inside top surface which is adapted to fit into and be secured by said first aperture, and an aperture in the bottom surface of said cap which is adapted to fit over and be secured by the portion of the socket extending beyond the plane of the lower portion of said end portion.
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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |