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US 5,671,815 AGranted
Hand machine tool with battery operated drive motor
AssigneeRobert Bosch GmbH
InventorsWilfried Kabatnik, Rainer Glauning
Life of this patent
Estimating the term…
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.
Claims6
A hand machine tool, comprising a machine housing;
- a drive motor;
- a releasably mountable battery unit for current supply of said drive motor and having contact surfaces;
- a coupling connection for electrical contacting of said drive motor with said battery unit, said coupling connection including a base received in said machine housing and carrying at least two contact springs arranged at a distance from one another and also contacting with said contact surfaces of said battery unit, said base being movable relative to said machine housing within a limit;
- and centering means provided between said base and said battery unit so as to provide a fitting abutment of said contact springs against said contact surfaces.
1 more element
Dependencies are inferred from the claim text.