Revolutions per minute regulation device for a hand-held electri

Details Revolutions per minute regulation device for a hand-held electri Revolutions per minute regulation device for a hand-held electri

1992-10-26

1994-03-22

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 50, 318257, H02K 1100

Patent

active

052967689

ABSTRACT:
A revolutions per minute (RPM) control device for hand-held electric tools, such as drilling tools and hammer drills, has a RPM sensor in a separate housing or container from the control device housing. The sensor is connected to the control device by a flexible cable. The sensor extends through an opening in the drive motor housing of the electric tool. The RPM control device can be used for a plurality of similar types of tools.

REFERENCES:
patent: 3828863 (1974-08-01), Bleicher et al.
patent: 4412158 (1983-10-01), Jefferson et al.
patent: 4820962 (1989-04-01), Millauer
patent: 4852434 (1989-08-01), Bald
patent: 4952830 (1990-08-01), Shirakawa
Prospectus Kress Elektrowerkzeuge, 1992 pp. 2, 3 and 13.

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