Mode change mechanism for power tools

Details Mode change mechanism for power tools Mode change mechanism for power tools

1990-05-14

1991-10-15

Rosenbaum, Mark

Tool driving or impacting

Drive adjustable to completely change kind of drive

Adjustable to impacting device

173109, 173163, B23B 4516, F16H 3716

Patent

active

050566075

ABSTRACT:
A power drill has a mode changing mechanism enabling the drill to be operated selectively in a hammer mode and a non-hammer mode. Pivotally mounted upon an internal partition of the drill is a mode changing mechanism comprising a first rigid limb and a second limb consisting of a leaf spring located in side-by-side relationship with the first limb. The mechanism is pivotable into a first position in which the rigid limb is directly behind the output shaft of the drill so preventing rearward movement of the shaft and enabling the drill to operate in a non-hammer mode, and a second position in which the leaf spring is directly behind the output shaft so allowing rearward movement of the shaft and enabling the drill to operate in a hammer mode.

REFERENCES:
patent: 3006202 (1961-10-01), Moorehead
patent: 3835715 (1974-09-01), Howell
patent: 4189011 (1980-02-01), Eberle
patent: 4232749 (1980-11-01), Rohrbach
patent: 4489792 (1984-12-01), Fahim et al.
patent: 4567950 (1986-02-01), Fushiya et al.

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