Abstract: In a hand-held electric power tool, a combination including an electromotor, and an electric circuit for controlling the speed of the motor, including a pressure switch for controlling the motor speed, a first control potentiometer operatively associated with said pressure switch for adjusting the motor speed from zero up to a predetermined motor operating speed.
Type:
Grant
Filed:
July 3, 1974
Date of Patent:
October 26, 1976
Assignee:
Metabowerke KG Closs, Rauch & Schnitzler
Inventors:
Albrecht Schnizler, Jr., Dietrich Holzwarth
Abstract: A drill chuck having a body adapted for connection to a spindle and a clamping member rotatable on the body and operable to actuate clamping jaws. Cooperating and selectively releasable elements of a spring loaded pawl and ratchet device are carried by the body and clamping member and lock the clamping member to the body in clamping position.
Type:
Grant
Filed:
August 5, 1974
Date of Patent:
July 20, 1976
Assignee:
Metabowerke KG Closs, Rauch, & Schnitzler