Patent US3650591A successfully refreshed from Google Patents.
US3650591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator shelf unit
Assignee: Individual
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Filing: 1970-04-08
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Granted: 1972-03-21
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Expires: 1990-04-08
Abstract
Abstract This elevator shelf unit is used in combination with a cabinet. It consists of a plurality of vertically spaced apart shelves rotatably mounted on a sleeve telescopically liftable on an upstanding rod on a base on the floor of the cabinet, the shelves being extendable through an opening in the top of the cabinet. A winch, rotatable by a crank handle through a side of the cabinet, operates a cable and pulley system for lifting the shelves, and a latch near the crank handle serves to hold the shelves in a desired elevated position. A counterweight system is optionally provided for use with heavy shelf loads. It may be used as concealable liquor shelves, or other household needs, for example, with a bathroom cabinet for toilet articles, with a kitchen cabinet for spices and other cooking essentials, etc.
Inventors
- 👤 Ernest B Longmire Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:10
CPC Classifications
A; A47; A47B; A47B51/00; A47B2220/00; A47B2220/0002; A47B2220/0013
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
294 words
For insertion within a cabinet (12) having floor (20), a top (36) and an opening (38) through said top (36); an elevator shelf unit (10) comprising an upstanding rod securable on said floor (20) beneath said top opening (38), a sleeve (22) telescopically mounted on said upstanding rod (14), a shelf (24) secured on said sleeve (22), said shelf (24) closing said top opening (38) when said sleeve (22) is telescoped down on said upstanding rod (14) in lowered position, controllable means (72, 80, 68 and 94) for elevating said sleeve (22) to raise said shelf (24) above said cabinet top (36), additional shelves (26,28) spaced vertically apart on and secured on said sleeve (22) beneath said first named shelf (24) and liftable with said sleeve (22), at least one of said upper shelves (26) having means (42) complementary to an article (34) supportable on a lower shelf for stabilizing such article, means (46,48) rotatably mounting said telescopic sleeve (22) on said upstanding rod (14), said controllable elevating means comprising bracket means (44) secured on a lower portion of said telescopic sleeve (22), bracket means (58) securable thereabove within said cabinet, pulley means (52,54) cooperatively mounted on both said bracket means (44,58), a winch (72) rotatably mountable within said cabinet lifting cable means (68) extending from said winch and reeved through said pulley means (52,54) and anchorable within said cabinet, a crank handle (80) on said winch (72) extendable through a side of said cabinet, means (94) for latching said winch (72) against rotation, said latching means (94) being extendable through a side of said cabinet adjacent said crank handle (80), and a base plate (16) on which said upstanding rod (14) is secured, said base plate being securable to said cabinet floor (20).
Claim 2
Dependent Claim
294 words
For insertion within a cabinet (12) having floor (20), a top (36) and an opening (38) through said top (36); an elevator shelf unit (10) comprising an upstanding rod securable on said floor (20) beneath said top opening (38), a sleeve (22) telescopically mounted on said upstanding rod (14), a shelf (24) secured on said sleeve (22), said shelf (24) closing said top opening (38) when said sleeve (22) is telescoped down on said upstanding rod (14) in lowered position, controllable means (72, 80, 68 and 94) for elevating said sleeve (22) to raise said shelf (24) above said cabinet top (36), additional shelves (26,28) spaced vertically apart on and secured on said sleeve (22) beneath said first named shelf (24) and liftable with said sleeve (22), at least one of said upper shelves (26) having means (42) complementary to an article (34) supportable on a lower shelf for stabilizing such article, means (46,48) rotatably mounting said telescopic sleeve (22) on said upstanding rod (14), said controllable elevating means comprising bracket means (44) secured on a lower portion of said telescopic sleeve (22), bracket means (58) securable thereabove within said cabinet, pulley means (52,54) cooperatively mounted on both said bracket means (44,58), a winch (72) rotatably mountable within said cabinet lifting cable means (68) extending from said winch and reeved through said pulley means (52,54) and anchorable within said cabinet, a crank handle (80) on said winch (72) extendable through a side of said cabinet, means (94) for latching said winch (72) against rotation, said latching means (94) being extendable through a side of said cabinet adjacent said crank handle (80), and a base plate (16) on which said upstanding rod (14) is secured, said base plate being securable to said cabinet floor (20).
Claim 3
Dependent Claim
43 words
The unit (10) of claim 1, a shelf counterweight, (64) additional pulley (62) means mounted in said bracket, and counterweight (64) cable means (66) securable at one end to said counterweight, reeved through all said Pulley means, and anchored at its other end.
References Cited (Backward Citations)
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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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |