Battery operated motor drive for small appliances

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4876490
SERIAL NO

07134010

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Abstract

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The invention relates to an electric-motor drive system for hand-guided tools, in particular for garden appliances but also for tools used at home such as drills and the like. A power source 12 which is portable or adapted to be fixed to the tool has a chargeable direct-current battery 14, the output of which is connected to a converter 16 which contains an electronic circuit which converts the DC voltage to a three-phase voltage. Via a three-phase line 22 a three-phase motor 18 is supplied and drives the tool 20 directly or via a coupling 28.

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Patent Owner(s)

Patent OwnerAddress
WOLF-GERATE GMBH GREGOR-WOLF-STRASSE D-5240 BETZDORF/SIEQNot Provided

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kolb, Walter Betzdorf/Sieg, DE 18 165

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