Battery operated motor drive for small appliances

Details Battery operated motor drive for small appliances Battery operated motor drive for small appliances

1987-12-17

1989-10-24

Salce, Patrick R.

Electricity: motive power systems

Portable-mounted motor and/or portable-mounted electrical...

318254, H02K 714

Patent

active

048764906

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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