Installer drive unit for chemical anchor

Tools – Wrench – screwdriver – or driver therefor – Stud-removal and implacement

Patent

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Details

405261, B25B 1350

Patent

active

044048750

ABSTRACT:
A drive unit for inserting threaded studs into drilled holes, the unit including a shank with an extension at one end adapted to be inserted into a drill chuck, a threaded extension at the other end and a polygonally shaped central portion.

REFERENCES:
patent: 958980 (1910-05-01), Thomas
patent: 1549041 (1925-08-01), Berg
patent: 1566691 (1925-12-01), Perry
patent: 2622466 (1952-12-01), Vander Bos et al.
patent: 2800820 (1957-07-01), Retterath
patent: 3244055 (1966-04-01), Schuermann et al.

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