Metal cutting shear and piercing tip therefor

Details Metal cutting shear and piercing tip therefor Metal cutting shear and piercing tip therefor

1997-10-03

1999-07-27

Payer, Hwei-Siu

Cutlery

Combined cutlery or combined with ancillary feature

With material-holder or disposal

30228, B23P 1900

Patent

active

059269588

ABSTRACT:
A heavy-duty shear adapted to be attached to a backhoe includes a fixed blade member with at least one blade insert attached to the fixed blade member. A movable blade is pivotally attached to the fixed blade with at least one blade insert attached to the movable blade. A piercing tip is attached to a front end of the movable blade with the blade inserts positioned between the piercing tip and the pivot point. The piercing tip extends to blade inserts of the moveable blades. The piercing tip may include a front end having a projection on a lower side thereof along a centerline of the piercing tip. The piercing tip of the present invention is designed to more easily sever material to be cut by the shear with the primary cut of the piercing tip being substantially perpendicular to the cut achieved by the blade inserts of the shear.

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patent: 4897921 (1990-02-01), Ramun
patent: 5187868 (1993-02-01), Hall
patent: 5619881 (1997-04-01), Morikawa et al.

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