Hair trimmer

Details Hair trimmer Hair trimmer

1979-08-22

1981-04-21

Yost, Frank T.

Cutlery

Razors

Combined

30 90, 30223, B26B 1910

Patent

active

042624150

ABSTRACT:
A hair trimmer has a shear blade assembly mounted in a frame and composed of a stationary blade and a reciprocating blade which slides on the stationary one. One or more biasing springs are interposed between the frame and the reciprocating blade to urge the same into proper contact with the stationary blade. A pivoted lever is interposed between the spring(s) and the reciprocating blade and serves to divert the biasing force to particular portions of the blades, such as the cutting edge, where it is needed while at the same time relieving other portions so that overall friction between the blades is reduced.

REFERENCES:
patent: 1723323 (1929-08-01), Bartlett
patent: 2870534 (1959-01-01), Angst et al.
patent: 3111755 (1963-11-01), Futterer et al.
patent: 3319334 (1967-05-01), Bond et al.
patent: 3460250 (1969-08-01), Liska
patent: 3962785 (1976-06-01), Poel
patent: 4031617 (1977-06-01), Tanaka et al.
patent: 4074427 (1978-02-01), Marchetti et al.
patent: 4118863 (1978-10-01), Sandy

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