Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Funnel like work-engaging surface cooperating with...
Patent
1993-06-11
1995-08-08
Bishop, Steven C.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Funnel like work-engaging surface cooperating with...
408 95, 408130, B23B 4514, B23B 4708, B23B 4722
Patent
active
054393329
ABSTRACT:
A small, portable, light-weight pneumatic spot weld drill comprises a drill housing assembly which includes a trigger assembly for providing a supply of pressurized gas. A piston assembly is positioned within the drill housing assembly and is axially translatable thereto. The piston assembly is actuated by the pressurized gas so as to provide cutting pressure for the drill bit. A motor assembly is contained within the drill housing assembly. The motor assembly has a rotatable output shaft for securing a drill bit and for providing rotary movement of that drill bit. A control valve is provided for receiving a supply of the pressurized gas and for controllably discharging the pressurized gas to the motor assembly. The control valve provides cutting pressure at a desired level and provides rotary motion of the drill bit.
REFERENCES:
patent: 2488992 (1949-11-01), Taylor
patent: 2909949 (1959-10-01), Winslow
patent: 5046900 (1991-09-01), Heiter et al.
Wielander Schill Pamphlt Article No. 4041 re. Vario Drill WS 90 spotweld remover.
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