Shear device having double security mechanism

Details Shear device having double security mechanism Shear device having double security mechanism

1998-06-15

1999-11-23

Payer, Hwei-Slu

Cutlery

Cutting tools

Plural cooperating blades

30254, B26B 1328

Patent

active

059877553

ABSTRACT:
A shear device includes a pair of handles having one end pivotally coupled together at a pivot shaft, and a pair of cutter blades secured to the handles and each having a notch. A knob is slidably engaged in the handles and includes a pin for engaging with the notches and for securing the cutter blades together. A button is slidably engaged in one of the handles. The knob includes a pawl for hooking to the button and for securing the knob to the button such that the knob may be secured to the handles and such that the pin may not be disengaged from the notches of the cutter blades.

REFERENCES:
patent: 154637 (1874-09-01), Breeden
patent: 3416226 (1968-12-01), Pfaffenbach
patent: 4341016 (1982-07-01), Harrison et al.
patent: 4980975 (1991-01-01), Hodson
patent: 5297343 (1994-03-01), Melter et al.
patent: 5367774 (1994-11-01), Labarre et al.
patent: 5625952 (1997-05-01), Thomas

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