Modular fastener driving tool

Details Modular fastener driving tool Modular fastener driving tool

1991-04-18

1992-06-09

Ostrager, Allen M.

Power plants

One shot explosion actuated expansible chamber type motor

60636, F01B 2908

Patent

active

051196344

ABSTRACT:
The powder actuated tool has a modular construction which comprises: a firing pin module; a pistol grip module; and a fastener driving module. The firing pin module and the fastener driving module are readily detachable from the pistol grip module so that if any module is damaged or needs maintenance, it may be readily removed from the rest of the tool and replaced at low cost and at no inconvenience to the user. The firing pin module includes a coherent breech assembly which is readily removable from, and securely attachable to the pistol grip module, which breech assembly comprises: a firing pin disposed in the breech assembly within a breech block; and cocking means extending from the breech assembly through the pistol grip module to engage the fastener driving module. The firing pin module has a movable sear pawl, the axis of which is disposed at an acute angle, with respect to the axis of the firing pin and breech block, so as to minimize accidental actuation of the firing pin, and also to provide a final cocking of the firing pin when the trigger is pulled.

REFERENCES:
patent: 3494125 (1970-02-01), Robinson
patent: 4099581 (1978-07-01), Maret et al.

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