Tube extractor drill jig

Details Tube extractor drill jig Tube extractor drill jig

1985-06-18

1987-03-03

Weidenfeld, Gil

Metal working

Method of mechanical manufacture

Repairing

294264, 29558, 408 54, 408 72R, 408 82, 408115R, B23P 700, B23B 4902

Patent

active

046464131

ABSTRACT:
The invention relates to a drill jig assembly for use in the removing a tube from a wall structure. the device fits within the tube and defines drill guide grooves along its length such that, a rotating drill inserted into the guide grooves will cut away a portion of the wall thickness of the tube. When portions of the tubing wall thickness have been reduced, the tube may be readily inwardly collapsed so as to easily remove it from the wall structure.

REFERENCES:
patent: 820965 (1906-05-01), Froggatt
patent: 1372378 (1921-03-01), Walker
patent: 1883662 (1932-10-01), Fisher
patent: 2181450 (1939-11-01), Davenport
patent: 2193764 (1940-03-01), Soos
patent: 2227348 (1940-12-01), Johnson
patent: 2232374 (1941-02-01), Drews
patent: 2289631 (1942-07-01), Cuda et al.
patent: 2300914 (1942-11-01), Flindt
patent: 2408450 (1946-10-01), Schrader
patent: 2411246 (1946-11-01), Clapper
patent: 2547986 (1951-04-01), Dermark
patent: 2670639 (1954-03-01), Flowers et al.
patent: 3613212 (1971-10-01), Miller

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