Friction plate

Details Friction plate Friction plate

1998-11-12

2000-05-16

Lorence, Richard M.

192 clutches and power-stop control

Elements

Engaging surfaces

19211336, 188264E, F16D 1374, F16D 1364

Patent

active

060623675

ABSTRACT:
A friction plate is constituted by a core plate, and friction members fixed respectively to opposite surfaces of the core plate. The friction member has oil passages, extending therethrough from its inner peripheral surface to its outer peripheral surface, and oil grooves which are open to the inner peripheral surface, but do not extend through the friction member. The area ratio of the oil grooves to the oil passages is 25% to 100%; and the width of the oil groove is not larger than the width of the oil passage. The length of the oil groove is not less than 1/4 of the length of the oil passage. It is not necessary that all of the oil grooves have the same length. Preferably, the width of the oil passage, as well as the width of the oil groove, is not more than 3 mm. The oil passages and the oil grooves may be inclined relative to the radial direction.

REFERENCES:
patent: 4396100 (1983-08-01), Eltze
patent: 4674616 (1987-06-01), Mannino, Jr.
patent: 5094331 (1992-03-01), Fujimoto et al.

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