Driver assembly for small-diameter fasteners

Details Driver assembly for small-diameter fasteners Driver assembly for small-diameter fasteners

1979-05-21

1980-12-16

Bell, Paul A.

Elongated-member-driving apparatus

Explosive-type driving means

With plunger

227149, 173133, 173139, B25C 114, B25C 118

Patent

active

042391431

ABSTRACT:
A driver assembly for reliably driving relatively small-diameter washered and nonwashered fasteners from an indirect-acting powder-actuated tool comprises an adapter, carried on the muzzle end of the tool barrel and having a bore wherein is operatively disposed an adapter piston adapted for cooperation with the tool piston. The adapter bore comprises two portions: a first portion, of a size to slidingly admit the shank of the tool piston, and a second portion, having a diameter of a size to guide and support the fastener during driving thereof. The adapter piston includes a head slidingly fitted in the first adapter bore portion and a shank so fitted in the second bore portion. The adapter piston is preferably spaced apart from the tool piston when both are in the driving position, whereby tool recoil is reduced.

REFERENCES:
patent: 3058116 (1962-10-01), Hilti
patent: 3066302 (1962-12-01), De Caro et al.
patent: 3095593 (1963-07-01), Siddons
patent: 3494431 (1970-02-01), Yoho et al.
patent: 3503549 (1970-03-01), Brunelle
patent: 3827678 (1974-08-01), Oesterele et al.
patent: 3866692 (1975-02-01), Stelljes

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