Portable power tool for milling tube ends

Details Portable power tool for milling tube ends Portable power tool for milling tube ends

1988-10-07

1989-12-26

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Means to drive tool

408201, 408211, 408702, 409175, B23B 4708

Patent

active

048894540

ABSTRACT:
A portable gas operated rotary tool is provided for milling a surface on the end of a cylindrical workpiece. The tool has a motor powered by a pressurized gas, such as compressed air. The motor directly drives a rotary milling head which is axially aligned with the axis of rotation of the motor. The motor has a stator chamber which houses a rotor having radial slots. Vanes are journaled within said slots for radial movement within the slot and define progressively expanding cavities. The milling head has a central bore for mounting on an arbor of the motor. The milling head includes blades for milling a frustonconical surface on the workpiece and means to align the tool with the longitudinal axis of the workpiece.

REFERENCES:
patent: 3228268 (1966-01-01), Strout
patent: 3817649 (1974-06-01), Medney
patent: 4620823 (1986-11-01), Hillestad
patent: 4761104 (1988-08-01), Hillestad

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