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US 4,171,650 AGranted
Jar lid loosening device
OwnerJohn Cardinalinventor
Life of this patent
Estimating the term…
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.
Claims2
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.
10 more elements
Dependencies are inferred from the claim text.