Hand machine tool with battery operated drive motor

Details Hand machine tool with battery operated drive motor Hand machine tool with battery operated drive motor

1996-04-30

1997-09-30

Smith, Scott A.

Tool driving or impacting

Means to drive tool about an axis

Electric motor

310 50, B23B 4502

Patent

active

056718152

ABSTRACT:
A hand machine tool with a battery operated drive motor has a plug coupling for electrical contacting of the drive motor with the battery unit mounted on the hand machine tool. The coupling includes a base provided at the machine side and displaceable relative to a machine housing. The base has contact springs which are in contact with contact surfaces provided on a plug housing of the battery unit. A centering element is located between the base and the plug housing and provides a fitting abutment between the contact springs and the contact surfaces.

REFERENCES:
patent: 3734207 (1973-05-01), Fishbein
patent: 4050528 (1977-09-01), Foltz et al.
patent: 4930583 (1990-06-01), Fushiya et al.
patent: 5054563 (1991-10-01), Zapf
patent: 5553675 (1996-09-01), Pitzen et al.

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