Electric drill multi-functional apparatus
OwnerWolfgang W. Moellerinventor
Life of this patent
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Abstract
An electric drill is disclosed having a tool housing, and a power shaft within the housing journaled for rotation. The tool can perform several different functions together or alternatively and includes a jaw closing function, a drilling function, a hammering function, an extracting function and the like. The application is also concerned with an automatic means for going from one function to another either automatically by the rotation of a shaft or in response to the extent to which a trigger on the tool is depressed inwardly toward the tool housing.
Claims7
In an electric drill multi-functional apparatus having means for effecting different functions, said apparatus having a housing for an electric motor and a power shaft which transmits power for said functions, the improvement for automatically actuating said functions sequentially which comprises an electric circuit including a source of electricity, said circuit having in parallel at least one first switch in series with first electromechanical apparatus corresponding to a first function of said multi-functions and at least a second switch in series with a second electromechanical apparatus corresponding to a second function of said multi-functions, a single switch engaging means for sequentially engaging said first switch and said second switch, and mechanical means for moving said single switch engaging means to actuate said first switch and thereafter to actuate said second switch.
Dependencies are inferred from the claim text.