US3868916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shelf construction
Assignee: Individual
•
Filing: 1973-07-02
•
Granted: 1975-03-04
•
Expires: 1993-07-02
Abstract
Abstract A shelf construction having a vertically extending column having at least one article supporting surface rotatably and adjustably supported on the column. The portion of the article supporting surface which is facing the column is joined to a sleeve placed around the former and having an upper bearing and a lower bearing. The article supporting surface is supported by the periphery of at least two wheels carried by the column. The column is provided with a number of diametrically opposed holes. A shaft is securely arranged in at least one of said hole. A wheel is mounted on each end of the shaft immediately adjacent the column which wheels support and carry the sleeve together with the article supporting surface.
Inventors
- 👤 Kurt Lennart Ohlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:48
CPC Classifications
A; A47; A47B; A47B63/00; A47B63/06; A47B63/062; A47B49/00; A47B2063/005; Y; Y10; Y10S; Y10S248/00; Y10S248/916
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
A rotatable shelf and the like comprising a. a vertical stationary column; b. a wheeled base supporting said column on a floor or similar support; c. a sleeve surrounding said column; d. a pair of vertically spaced bearing bushings rotatable about said column supporting the upper and lower ends of said sleeve at a spaced distance from the exterior surface of said column; e. a pair of wheels mounted on the opposite ends of a shaft extending through said column and engaging the lower one of said bearing bushings to permit rotation of said sleeve about said column; and f. a shelf member fixed to said sleeve for rotation about said column, extending therefrom in a horizontal direction, said bearing bushings being substantially L-shaped and having an annular slot forming a portion tapering upwardly towards the exterior surface of said column.
Claim 2
Dependent Claim
141 words
A rotatable shelf and the like comprising a. a vertical stationary column; b. a wheeled base supporting said column on a floor or similar support; c. a sleeve surrounding said column; d. a pair of vertically spaced bearing bushings rotatable about said column supporting the upper and lower ends of said sleeve at a spaced distance from the exterior surface of said column; e. a pair of wheels mounted on the opposite ends of a shaft extending through said column and engaging the lower one of said bearing bushings to permit rotation of said sleeve about said column; and f. a shelf member fixed to said sleeve for rotation about said column, extending therefrom in a horizontal direction, said bearing bushings being substantially L-shaped and having an annular slot forming a portion tapering upwardly towards the exterior surface of said column.
Claim 3
Dependent Claim
28 words
A rotatable shelf construction according to claim 1, in which the bearing bushing engaging said wheels has a flange extending downwardly around a peripheral portion of the wheels.
Claim 4
Dependent Claim
143 words
A rotatable shelf and the like according to claim 1, further comprising a. a disc member resting on said shelf member for supporting articles placed thereon; b. the portion of said disc facing said column having an inverted U-shaped portion extending above the disc, the leg facing said sleeve abutting against the upper one of said bearing bushings and extending downwardly between said shelf member and said sleeve; c. the portion of said disc remote from said sleeve having a flange extending downwardly over the edge of the shelf member to clamp said disc thereon; d. said downwardly extending flange having an outwardly extending flange terminating in a hook portion; e. a partition clamped between the outer leg of said inverted U-shaped portion and said flange, and f. a flexible strip engaging said hook member and an outwardly extending portion of said portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |