Three-piece retractable-bladed knife

Details Three-piece retractable-bladed knife Three-piece retractable-bladed knife

1994-03-21

1995-12-19

Peterson, Kenneth E.

Cutlery

Sheathed

Sliding blade

30335, 30339, 606167, 606181, B26B 108

Patent

active

054759250

ABSTRACT:
A three-piece knife having a replacable, retractable cutting blade, which may be locked either in the operating or deployed position, or in a retracted or safety position, by using a single digit on one hand, is described. Safety of hospital personnel and medical waste-disposal personnel is achieved in the surgical scalpel embodiment of the three-piece knife without loss of function or convenience of the scalpel.

REFERENCES:
patent: 1853672 (1932-04-01), Dodson
patent: 2548797 (1951-04-01), Ingwer et al.
patent: 3079686 (1963-03-01), Christy
patent: 3192624 (1965-07-01), Gringer
patent: 3863339 (1975-02-01), Reaney et al.
patent: 3879847 (1975-04-01), Roll
patent: 3906626 (1975-09-01), Riuli
patent: 4170062 (1979-10-01), Machida
patent: 4389776 (1983-06-01), Okada
patent: 4558517 (1985-12-01), Gringer
patent: 5201748 (1993-04-01), Newman et al.

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