US4171650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jar lid loosening device
Assignee: Individual
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Filing: 1977-12-09
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Granted: 1979-10-23
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Expires: 1997-12-09
Abstract
Abstract A jar lid loosening device for screw type jar lids consisting of a jar lid receiving member arranged to accommodate a range of different sized lids, a vertically moveable table to support and raise a jar to have the lid thereof come into a holding engagement with said lid receiving member, a motor driven endless screw raising said table, a motor driven sprocket chain rotating said lid receiving member to loosen said jar lid and a switch member causing a reverse rotation of said endless screw to lower said table and the jar therein, removing said lid from said lid receiving member.
Inventors
- 👤 John Cardinal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:13
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/18; B67B7/182
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
176 words
A jar lid loosening device, having in combination a frame structure having an extended base and an overhanging top plate member, an upstanding screw member journaled in said frame between said base and said top plate member, a jar supporting table member, a hub portion of said table member having said screw member threaded therethrough, said hub member having vertical oppositely disposed open sided vertical slots, edge portions of a pair of opposed wall members of said frame structure being disposed in said slots, a friction gripping surface portion overlying said table member, a jar lid receiving member rotatably depending from said top plate member, said jar lid receiving member having a recess comprising a jar lid friction engaging surface, electrical means carried by said frame structure driving said screw member, electrical operated means carried by said frame structure driving said jar lid receiving member, switch means respectively carried by said two mentioned electrical means actuating the same, and means carried by said base limiting the upward thrust of said table member by said screw member.
Claim 2
Dependent Claim
176 words
A jar lid loosening device, having in combination a frame structure having an extended base and an overhanging top plate member, an upstanding screw member journaled in said frame between said base and said top plate member, a jar supporting table member, a hub portion of said table member having said screw member threaded therethrough, said hub member having vertical oppositely disposed open sided vertical slots, edge portions of a pair of opposed wall members of said frame structure being disposed in said slots, a friction gripping surface portion overlying said table member, a jar lid receiving member rotatably depending from said top plate member, said jar lid receiving member having a recess comprising a jar lid friction engaging surface, electrical means carried by said frame structure driving said screw member, electrical operated means carried by said frame structure driving said jar lid receiving member, switch means respectively carried by said two mentioned electrical means actuating the same, and means carried by said base limiting the upward thrust of said table member by said screw member.
Claim 3
Dependent Claim
40 words
The structure of claim 1, wherein said last mentioned means comprises a clutch member having a drive shaft, gears connect said screw member and said drive shaft, and said last mentioned electrical means has said clutch member operatively mounted thereon.
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) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |