Friction ring for clutches or brakes, and a method and device fo

Details Friction ring for clutches or brakes, and a method and device fo Friction ring for clutches or brakes, and a method and device fo

1986-07-23

1988-09-13

Moon, Charlie T.

192 clutches and power-stop control

Elements

Engaging surfaces

29458, 29460, 295272, 192 53F, 419 8, 419 28, 72359, F16D 1100, F16D 1360, B23P 2500

Patent

active

047702834

ABSTRACT:
A friction ring for clutches and brakes consists of an annular metal element having at least one cylindrical or conical friction surface comprising a spray-sintered friction lining. The friction linings are directly sintered onto the annular element itself, the intially planar friction surfaces being formed, after applying the spray-sintered friction linings, into cylindrical or conical shape by a non-cutting shaping process such as stamping, deepdrawing or the like. The method of producing the friction ring comprises producing an annular metal element, applying a spray-sintered friction lining on to one or both sides thereof and shaping the annular element together with the sintered linings applied thereto into a cylindrical or conical form. The shaping is performed by means of a shaping tool comprising a die and an associated plunger working on the annular element. To avoid detrimental effect of the device to the porous spray-sintered friction lining, a layer or sheet of rubber or plastic is provided between the annular element and the shaping surface of the plunger and/or the die, respectively.

REFERENCES:
patent: 2289311 (1942-07-01), Wellman
patent: 2389061 (1945-11-01), Kuzmick
patent: 2793427 (1957-05-01), Marvin
patent: 3390750 (1968-07-01), Albertson
patent: 3738901 (1973-06-01), Malsushima et al.
patent: 4049090 (1977-09-01), Buell
patent: 4679681 (1987-07-01), Creydt et al.
patent: 4681734 (1987-07-01), Simm et al.

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