Friction material and its manufacturing method

Details Friction material and its manufacturing method Friction material and its manufacturing method

2006-05-30

2006-05-30

Rodriguez, Saul (Department: 3681)

192 clutches and power-stop control

Elements

Engaging surfaces

C264S327000

Reexamination Certificate

active

07051858

ABSTRACT:
A friction material has a resin amount distribution that is the largest at a portion near a non-friction surface, that becomes lower toward an inside and that is the lowest at a portion near a friction surface. For example, such friction material is manufacture as follows. First, two friction materials are overlapped while the friction surfaces faced with each other. Then, the friction materials are dried at a room temperature. At this time, the resin has such a characteristic as to move while dragged by a solvent that dries from the non-friction surface located outside. Using such characteristic, the resin amount at the portion near the friction surface is lessened. Then, a temperature at the friction surface is made low and a temperature at the non-friction surface is made high in a drying step of the fiction material. Thereby, the resin amount at the portion near the friction surface is lessened.

REFERENCES:
patent: 2196569 (1940-04-01), Stroehla et al.
patent: 2277602 (1942-03-01), Novak
patent: 2578457 (1951-12-01), Somers
patent: 3290423 (1966-12-01), Hatch et al.
patent: 4874564 (1989-10-01), Sudani et al.
patent: 5823314 (1998-10-01), Suzuki et al.
patent: 6776276 (2004-08-01), Okamura et al.

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