Fluid coupling for a cooling fan of an internal combustion engin

Details Fluid coupling for a cooling fan of an internal combustion engin Fluid coupling for a cooling fan of an internal combustion engin

1992-02-13

1993-08-24

Kamen, Noah P.

Internal-combustion engines

Cooling

Automatic coolant flow control

192 58B, 192 82T, F01P 702

Patent

active

052379655

ABSTRACT:
A fluid coupling of a cooling fan is for an internal combustion engine in an automotive vehicle and comprises labyrinth grooves defined by circular projections formed on a drive disc and a driven member, respectively. Rotating energy transmission from the engine to the cooling fan is carried out through the labyrinth grooves at which rotating energy is transmitted through an operating fluid. A plurality of passages are radially formed on the driven member to smoothly change the transmission ratio of the rotating energy by supplying the operating fluid to the outside portion of the labyrinth grooves.

REFERENCES:
patent: 4116318 (1978-09-01), Crisenbery et al.
patent: 4190139 (1980-02-01), Tinholt et al.

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