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US4440459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable shelf hardware
Assignee: Valhi Inc
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Filing: 1982-05-07
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Granted: 1984-04-03
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Expires: 2002-05-07
Abstract
Abstract A rotary shelf storage unit for mounting in a corner cabinet includes an upper pivot mounting and a lower pivot mounting. The lower pivot mounting includes an adjustable hub mounted on a plate attached to the floor of the corner cabinet. A hub receptacle projects downwardly from the bottom shelf and engages the hub for support of the shelf unit. The hub includes rollers which are biased outwardly for engagement with appropriately positioned detents of the hub assembly. By adjusting the position of the hub relative to its mounting plate, it is possible to control the detent position of the rotary shelf unit. Wheels attached to the bottom shelf ride on the mounting plate to support the shelf unit.
Inventors
- 👤 Charles G. Hallgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:20
CPC Classifications
A; A47; A47B; A47B49/00; A47B49/004; A47B49/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
173 words
Hardware for a rotary shelf unit comprising, in combination: an upper bracket assembly for pivotally attaching a cabinet door to a cabinet housing to pivot about a vertical axis; a lower support assembly for attachment to a bottom horizontal shelf affixed to the cabinet door for pivotally supporting the cabinet door about the vertical axis, said lower support assembly including: a mounting plate for affixing to the floor of a cabinet; a hub adjustably attached to the mounting plate; a hub receptacle for attachment to the bottom shelf and for receipt of the hub; said hub including a laterally outward, biased follower member, and said hub receptacle including at least one detent for cooperation with the follower member; said biased follower member comprising a coil spring interposed between first and second roller carriages, said carriages mounted for reciprocal movement in a radial slot in the hub, each of said carriages including a roller member rotatable about an axis parallel to the vertical axis; and roller means spacing the bottom shelf and mounting plate.
Claim 2
Dependent Claim
173 words
Hardware for a rotary shelf unit comprising, in combination: an upper bracket assembly for pivotally attaching a cabinet door to a cabinet housing to pivot about a vertical axis; a lower support assembly for attachment to a bottom horizontal shelf affixed to the cabinet door for pivotally supporting the cabinet door about the vertical axis, said lower support assembly including: a mounting plate for affixing to the floor of a cabinet; a hub adjustably attached to the mounting plate; a hub receptacle for attachment to the bottom shelf and for receipt of the hub; said hub including a laterally outward, biased follower member, and said hub receptacle including at least one detent for cooperation with the follower member; said biased follower member comprising a coil spring interposed between first and second roller carriages, said carriages mounted for reciprocal movement in a radial slot in the hub, each of said carriages including a roller member rotatable about an axis parallel to the vertical axis; and roller means spacing the bottom shelf and mounting plate.
Claim 3
Dependent Claim
35 words
The hardware of claim 1 wherein said hub is pivotally mounted on the mounting plate to pivot about the vertical axis and including means for attaching the hub to the plate at a desired orientation.
Claim 4
Dependent Claim
27 words
The hardware of claim 1 including a flange plate for supporting the hub receptacle, said flange plate being attachable to the bottom surface of the bottom shelf.
Claim 5
Dependent Claim
27 words
The hardware of claim 3 including a plurality of roller means between the flange plate and mounting plate for supporting the flange plate on the mounting plate.
Claim 6
Dependent Claim
29 words
The hardware of claim 1 wherein said roller means comprise a plurality of wheels for suspension from the bottom shelf, said wheels being radially spaced from the pivot axis.
Claim 7
Dependent Claim
28 words
The hardware of claim 1 including means for adjusting the position of the pivot axis for the shelves defined by the upper bracket assembly and lower support assembly.
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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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |