Wheel cylinder piston construction

Details Wheel cylinder piston construction Wheel cylinder piston construction

1976-05-19

1977-08-16

Blix, Trygve M.

Brakes

Operators

Fluid pressure

92245, 92255, 188364, F16D 6524

Patent

active

040420809

ABSTRACT:
A wheel cylinder piston made of powdered metal is provided with a through hole and a steel or powdered metal insert of hard metal received in and fills the hole. The hardened insert acts directly against a tang of the brake shoe, eliminating the need for reaction pins. The piston of the assembly is made in a die set having a through rod to define the hole, the piston green preform being sintered and sized before or after the insert is in place.

REFERENCES:
patent: 2308875 (1943-01-01), Goepfrich
patent: 2366832 (1945-01-01), Christenson
patent: 2384614 (1945-09-01), Forbes
patent: 2509643 (1950-05-01), House
patent: 3112959 (1963-12-01), Kateley
Brake and Front End Service, vol. 35, No. 12, Dec. 1965, "EIS Announces a New Group of Wheel Cylinder Repair Kits", p. 39.

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