Powder actuated tool

Details Powder actuated tool Powder actuated tool

1977-07-20

1978-09-19

Custer, Jr., Granville Y.

Elongated-member-driving apparatus

With interlock means

227 10, B25C 114

Patent

active

041147928

ABSTRACT:
A tool for driving nails into hard surfaces wherein the driving power is provided by cartridges of explosive powder. The cartridges are contained in strips with a single strip containing a multiple of cartridges, in the order of ten. The improvement comprises the mechanism for feeding the strip of cartridges in increments automatically through the tool and for retaining the tool piston in its ready to be fired position. The feeding of the cartridges is accomplished by a camming finger connected to the barrel of the tool which progressively engages successive following lugs on the strip to move successive cartridges of the strip into place within the firing chamber as the tool is repeatedly engaged and disengaged with a work surface. A ring having a double loop configuration frictionally grips the piston to resist accidental displacement.

REFERENCES:
patent: 3473719 (1969-10-01), Jephson
patent: 3552625 (1971-01-01), Udert
patent: 3554425 (1971-01-01), Oesterle
patent: 3565313 (1971-02-01), Seghezzi et al.
patent: 3632032 (1972-01-01), Termet
patent: 3743159 (1973-07-01), Schneider

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