Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members
Patent
1975-06-04
1977-02-01
Custer, Jr., Granville Y.
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including supply magazine for constantly urged members
B25C 106
Patent
active
040058123
ABSTRACT:
An electric fastener driving tool includes a body of clamshell construction formed of two, similar, molded plastic body parts. The body includes a head portion and a handle portion, and a magazine for supplying fasteners to be driven is supported by the base of the head portion and by the handle. Walls and projections integral with the body parts define a solenoid chamber within the head cavity and support a switch and circuit board within the handle. The body is held in assembled condition and the magazine is attached to the body by bolts of equal length. A solenoid with a central axial opening is mounted in the solenoid chamber. An armature formed of magnetic and nonmagnetic, electrically insulated segments is slidably mounted in the axial solenoid opening. A spring contacting an integral body wall and the insulating armature segment biases the armature in the return direction. A driver blade carried by the armature may be attached in electrically insulated fashion, and moves in a drive path into which fasteners are supplied from the magazine. A circuit including a switch controls energization of the solenoid, and a switch operating assembly provides for fail-safe operation and prevents unintentional multiple firing.
REFERENCES:
patent: 2572012 (1951-10-01), Curtis
patent: 2881402 (1959-04-01), Walker
patent: 3016439 (1962-01-01), Hagberg
patent: 3088011 (1963-04-01), Ulbing
patent: 3586810 (1971-06-01), Brown
patent: 3589587 (1971-06-01), Manganaro
Doyle Richard H.
Morabito Salvatore L.
Novak Raymond F.
Yohana Andrew I.
Custer, Jr. Granville Y.
Duo-Fast Corporation
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