Electric power tool having a drive mechanism that can be...

Details Electric power tool having a drive mechanism that can be... Electric power tool having a drive mechanism that can be...

2007-09-25

2007-09-25

Rada, Rinaldi I. (Department: 3721)

Tool driving or impacting

Drive adjustable to completely change kind of drive

Adjustable to impacting device

C173S104000, C173S109000

Reexamination Certificate

active

11214964

ABSTRACT:
An electric power tool has a drive mechanism switchable back and forth among a drilling, a percusion drilling, and a chiseling mode of operation; a drive shaft performing a rotary motion; a percusion mechanism provided with a drive bearing; a serrated sleeve supported axially displaceably in the drive bearing of the percussion mechanism and transmitting a rotary motion of the drive shaft to the drive bearing of the percusion mechanism when it is in an axial position corresponding to the chiseling or percusion drilling modes of operation; and an axially displaceable serrated shaft supported in the drive bearing, so that the serrated sleeve transmits to the serrated shaft the rotary motion of the drive shaft when the serrated shaft is in axial position corresponding to the drilling or percussion drilling modes of operation.

REFERENCES:
patent: 4446931 (1984-05-01), Bleicher et al.
patent: 4719976 (1988-01-01), Bleicher et al.
patent: 5373905 (1994-12-01), Bleicher et al.
patent: 5379848 (1995-01-01), Rauser
patent: 6460627 (2002-10-01), Below et al.
patent: 1 157 788 (2001-11-01), None

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