Brakes – Elements – Brake wheels
Patent
1996-10-02
1998-10-20
Poon, Peter M.
Brakes
Elements
Brake wheels
29901, 82903, F16D 6510
Patent
active
058233040
ABSTRACT:
An improved method for producing a final balanced and noise suppressing brake drum including a generally closed outer end, a generally axially extending cylindrical main body, and an open inner end. The closed outer end of the brake drum includes a centrally located wheel spindle opening formed therein, and a plurality of lug bolt mounting holes spaced circumferentially around the wheel spindle opening. The cylindrical main body of the brake drum is formed during a casting operation and includes a plurality of discrete raised segments formed on an outer surface thereof. Preferably, at least three raised segments are provided on an outer surface of the brake drum, and at least two of the three segments are spaced apart from one another by generally equal angles. The discrete raised segments are provided at predetermined locations on the outer surface to reduce brake noise and are selectively machined during a machining operation to produce a final balanced brake drum.
REFERENCES:
patent: 2288438 (1942-06-01), Dach
patent: 2847088 (1958-08-01), Two
patent: 3506478 (1970-04-01), Hudson et al.
patent: 4986149 (1991-01-01), Carmel et al.
patent: 5138757 (1992-08-01), Ball et al.
"Brake Squeal--The Influence of Rotor Geometry, An overview of a presentation to the 10th Annual SAE Braking Colloquium", by Allan M. Lang, Mintex Don Ltd. England, Oct. 13, 1992.
Kelsey-Hayes Company
Poon Peter M.
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