Battery operated motor drive for small appliances
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United States of America Patent
Stats
-
Oct 24, 1989
Grant Date -
N/A
app pub date -
Dec 17, 1987
filing date -
Dec 19, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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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Family
International Classification(s)
Cited Art Landscape
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