Wire lock liner

Details Wire lock liner Wire lock liner

1986-07-22

1987-11-24

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

408115B, 408241B, B23B 4902

Patent

active

047085401

ABSTRACT:
A two-part drill bushing assembly makes use of a sleeve, identified in the trade as a lock liner bushing which is embedded in a jig plate for reception of a separate slip renewable bushing element. Extending through the renewable bushing element is an axial bore within which a drill bit rotates during operation on a workpiece. On the exterior of the renewable bushing element is a helical shoulder which, when rotated, interlocks with a locking shoulder of the liner bushing. The invention involves a stiff wire rod, a mid-portion of which is bent to form the locking shoulder and from which legs extend to positions of snapped-on attachment to the liner bushing.

REFERENCES:
patent: 3015242 (1962-01-01), Armacost
patent: 3306137 (1967-02-01), Mele
patent: 3535956 (1970-10-01), Gnoth

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