Automotive fan drive assembly

Details Automotive fan drive assembly Automotive fan drive assembly

1977-05-04

1978-10-10

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Operators

192 84C, 123 4112, F16D 2710, F16D 4325

Patent

active

041191846

ABSTRACT:
An electromagnetically operated engine cooling fan drive assembly is disclosed having a configuration particularly suited for retrofit applications, including a central shaft adapted to be mounted to an existing fan drive flange to be driven thereby. The fan is mounted on a fan hub member rotatably mounted on the central shaft, with a temperature responsive electromagnetic clutch arrangement controlling drive to the fan hub which arrangement includes an inner body keyed to the central shaft, an armature connected by spring connection to the fan hub, and a fixed electromagnetic coil energized by a temperature switch at high engine temperatures and adapted to urge the armature into clutching engagement with the inner body and cause the fan to be rotated. A number of design features are described: an axially compact mounting of the fan hub to enable positioning of the fan within existing shrouding; the fan hub also encloses the magnetic clutch elements to shield the same against the entrance of dirt and other contaminants; special locking tabs which, in the event of electrical failure, can be positioned to mechanically lock together the inner body and fan hub; the inner body and armature do not support the fan in order to reduce the incidence of failure of these elements; an adjustable anti-rotation arm is provided restraining the magnetic coil body against rotation; the magnetic clutch may be assembled and disassembled on the engine allowing a more compact assembly and convenient repairs; a special fan hub bearing washer retainer is described that is locked to the central shaft insuring that bearing failure will not cause rotation of an end bolt which secures the fan hub on the central shaft.

REFERENCES:
patent: 3924585 (1975-12-01), Woods
patent: 3994379 (1976-11-01), Miller

Affiliated with

Also associated with

Rating

Automotive fan drive assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automotive fan drive assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automotive fan drive assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1763381