Viscous coupling clutch

Details Viscous coupling clutch Viscous coupling clutch

1989-11-14

1990-10-16

Braun, Leslie A.

192 clutches and power-stop control

Clutches

Fluent material

F16D 3100

Patent

active

049628372

ABSTRACT:
To obtain a wide transmission torque adjustable range at a short stroke in a viscous coupling clutch including a first rotatable member and a second rotatable member rotatably and slidably disposed relative to the first rotatable member so as to form a working chamber filled with a viscous fluid, without increasing the clutch size and cost, first and second cylinder assemblies of different diameters are coaxially fixed to the first and second rotatable members, respectively in such a way that a radial thickness of each of the resistance cylinder members changes stepwise along the axial direction thereof to stepwise change the overlap and gap (i.e. viscous coupling) conditions between the first and second cylinder assemblies, when the first rotatable member is moved axially relative to the second rotatable member.

REFERENCES:
patent: 3101825 (1963-08-01), Caroli et al.
patent: 4058027 (1977-11-01), Webb
patent: 4503952 (1985-03-01), Hesse
patent: 4562847 (1986-01-01), Renneker
patent: 4712663 (1987-12-01), Teraoka
patent: 4782930 (1988-11-01), Kuroiwa et al.
patent: 4844219 (1984-07-01), Stockmar

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