Lightweight power tools

Details Lightweight power tools Lightweight power tools

1990-04-16

1993-02-23

Watts, Douglas D.

Tool driving or impacting

Miscellaneous

173147, 173170, 30392, 30394, B27B 1909

Patent

active

051881888

ABSTRACT:
A lightweight power tool includes a housing having a handle and an implement projecting form the housing. A drive mechanism is included as part of the housing for moving the implement relative to the housing. A power source that includes an electric motor is disposed at a location removed from the housing. A flexible power transmission line connects the housing and the power source. The housing includes a transmitter for generating an on-off signal, which transmitter is activated by a manual switch included as part of the housing. The power source includes a receiver for receiving the on-off signal generated by the transmitter. Because the power source is not included as part of the housing, the housing is very lightweight and maneuverable. Accordingly, the power tool can be manipulated conveniently by handicapped persons, those having small hands, or those having less than average strength.

REFERENCES:
patent: 2240755 (1941-05-01), Briggs
patent: 2662412 (1953-12-01), Miller
patent: 2698621 (1955-01-01), Fernandez
patent: 4283855 (1981-08-01), Nalley
patent: 4531291 (1985-07-01), Laube
patent: 4544366 (1985-10-01), Krehbiel
patent: 4721480 (1988-01-01), Yung
patent: 4729742 (1988-03-01), Onishi et al.
patent: 4993502 (1991-02-01), McCullough

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