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US 4,250,769 AGranted
Pivoted adjustable lever with grab link
OwnerGerald E. Herringinventor
Life of this patent
Estimating the term…
Abstract
An adjustable hand lever having a vertically adjustable tripod base, an adjustable fulcrum point and a grab link at the working end of the lever. The grab link accomodates and makes adjustable linked working chains.
Claims5
A handoperated lifting apparatus comprising:
- (a) a lever having a working end and a handle with means for longitudinal adjustment of a pivot point;
- (b) a fulcrum having a tripod base with means for vertical adjustment of said pivot point;
- and
- (c) means for adjusting the length of a linked chain and securing the adjusted length of chain to said working end,
- wherein said means for adjusting the length of a linked chain is a U-shaped grab hook with an inner surface having a keyhole configuration which includes an oval upper portion and a vertical slot, said vertical slot adapted to receive a link of chain.
2 more elements
Dependencies are inferred from the claim text.