Power tool

Details Power tool Power tool

1990-04-10

1991-08-27

Watts, Douglas D.

Tool driving or impacting

Impacting devices

With means for rotating tool

302721, A01B 3304, B26B 900

Patent

active

050425927

ABSTRACT:
The invention provides a portable power tool which is lightweight and convenient to use by the general public in any of its various forms, as a wallpaper stripper, a paint scraper or a cold chisel up to a power spade. The tool comprises a housing (12), a drive means, conveniently an electric motor (14,160) adapted to drive a selected tool bit (4,56,62,64,66,68), the output shaft (44) moving in a reciprocating axial movement. Conveniently the drive means may be a linear motor (160) or if used with a cam device, a rotary motor (14). The cam device may be a cylinder cam (32) provided with a sinusoidal cam track (34).

REFERENCES:
patent: 2535253 (1950-12-01), Anderson
patent: 3049803 (1962-08-01), Danger
patent: 3832776 (1974-09-01), Sawyer
patent: 4669190 (1987-06-01), Innami et al.
patent: 4785210 (1988-11-01), Maruyama et al.
patent: 4884344 (1989-12-01), Martinez et al.

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