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US 4,550,695 AGranted
Fan device for internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsYasuyuki Kikuchi, Eiichi Matsumoto, Yoshimasa Tanaka
Life of this patent
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Abstract
A fan device is provided with a brake which uses a temperature responsive coil made of a shape memory alloy. The brake anchors the rotation of a fan blade when the temperature responsive coil assumes an extended shape where it urges a brake element into a brake apply position.
Claims12
A fan device for an internal combustion engine, comprising:
- a driving member;
- a fan;
- means for providing a fluid coupling between said driving member and said fan;
- and
- brake means for preventing rotation of said fan at a predetermined temperature indicative of engine temperature, said brake means including a temperature responsive portion variable in shape in response to changes in engine temperature, said portion having a first shape preventing fan rotation at said predetermined temperature.
2 more elements
Dependencies are inferred from the claim text.