Tool driving or impacting – Impacting devices – Hammer head driven by electric motor
Patent
1985-07-22
1987-06-02
Olszewski, Robert P.
Tool driving or impacting
Impacting devices
Hammer head driven by electric motor
173119, 173122, 173130, B25D 1112
Patent
active
046695524
ABSTRACT:
Power driving apparatus includes a body portion, a power supplying portion, an actuating portion, a drive portion, a biasing portion and a surface contacting portion. The body portion includes a vertically oriented elongated tubular section, the tubular section including a substantially open lower end. The power supplying portion includes a power source affixed to the body portion spaced from the open lower end thereof, the power source including an output shaft member disposed transversely of the body portion. The actuating portion includes a rotatable eccentric supported transversely axially within the body portion, the eccentric being spaced from the open lower body end substantially parallel to the output shaft member. An arm member has one end pivotally connected to the eccentric and extends therefrom downwardly toward the open lower body end. A weighted hammer section is supended from a lower free end of the arm member and disposed within the body portion. The drive portion includes drive mechanism operatively connecting the output shaft member with the eccentric. The biasing portion includes a coil spring member having one end operatively connected to the hammer section, the coil spring member urging the hammer section toward the open lower body end. The surface contacting portion includes a toolhead member disposed adjacent the open lower body end and axially aligned therewith.
REFERENCES:
patent: 1847135 (1932-03-01), Oldham
patent: 1932259 (1933-10-01), Warren
patent: 2519477 (1950-08-01), Kind
patent: 2626598 (1953-01-01), Tarwater
patent: 3256945 (1966-06-01), Grospas
patent: 3587754 (1971-06-01), Laatsch
patent: 3937286 (1976-02-01), Wagner
Foster J. Marlo
Pierce, II Fred C.
Olszewski Robert P.
Urban Arthur L.
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