Brake drum manufacture

Details Brake drum manufacture Brake drum manufacture

1993-09-23

1994-09-13

Vo, Peter Dungba

Metal working

Means to assemble or disassemble

With control means energized in response to activator...

29705, 29709, 29802, B23P 1904, B23Q 1720

Patent

active

053456726

ABSTRACT:
Manufacture of brake drums having an annular brake ring and a drum back for mounting the ring for rotation about an axis defined at least in part by one or more openings in the back. Radial runout of the brake ring is measured, and the mounting openings in the drum back are located at a position to substantially cancel the first harmonic of measured radial runout. The radially inwardly directed braking surface of the drum ring is then finish-machined on a cylinder of revolution coaxial with the drum back mounting openings so as to provide a brake ring of substantially uniform thickness and weight distribution about the axis of rotation defined by the drum back mounting openings.

REFERENCES:
patent: 1819622 (1931-08-01), Roberts
patent: 3307251 (1967-03-01), Magyar
patent: 3611535 (1971-10-01), Nobach
patent: 3808660 (1974-05-01), Wik
patent: 3951563 (1976-04-01), Ravenhall
patent: 4067098 (1978-01-01), Blair, Jr.
patent: 4262407 (1981-04-01), Petersen et al.
patent: 4354407 (1982-10-01), Daudi et al.
patent: 4523666 (1985-05-01), Murray
patent: 4733448 (1988-03-01), Daudi
Exhibits A-N, Motor Wheel Corporation Study of parts 87101 & 87945, 1988-1989.
Exhibits O-Q, Update Balance Scrap Figures from Apr. 1991-Feb. 1993.

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