Ammunition and explosives – Igniting devices and systems
Patent
1975-04-23
1977-05-31
Tudor, Harold
Ammunition and explosives
Igniting devices and systems
89 35R, 102 865, F42B 304
Patent
active
040262120
ABSTRACT:
An open chamber gas powered tool and gas generating charge for the tool. The charge has a hollow open-ended plastic jacket of uniform noncircular cross-section from end to end containing a propellant, such as nitrocellulose, which may be electrically ignited through an open end of the jacket by a spark, hot wire or the like or ignited by detonation of a dab of priming compound contained within a recess in one end of the jacket. The tool has an open chamber breech mechanism including a cylinder containing a firing chamber opening through the cylinder circumference for transporting charges to firing position wherein the chamber is closed by the breech frame, a trigger actuated firing means for firing the charges in firing position, and operating means powered by the gas generated by each fired charge for performing a work function.
The particular tool described is a fastener driving tool having an electrical firing circuit which is conditioned for operation to fire charges by pressing the tool against a workpiece, and a plunger which is propelled through a working stroke by the pressurized gas generated by the fired charges to drive fasteners, such as nails or studs, into the workpiece. The invention also provides a novel method of fabricating and packaging the charges in a magazine with the charges fixed to a web or band for feeding the charges to the tool.
REFERENCES:
patent: 3328963 (1967-07-01), Kraus
patent: 3424087 (1969-01-01), Hintze
patent: 3433156 (1969-03-01), Suzuki et al.
patent: 3467276 (1969-09-01), Dardick
patent: 3492913 (1970-02-01), Barnard
patent: 3514026 (1970-05-01), Dardick
patent: 3572248 (1971-03-01), Dardick
Anderson Daniel T.
Dinardo Jerry A.
Nyhagen Donald R.
Tudor Harold
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