Pumps – Including disengageable rotary or frangible drive connection
Patent
1987-07-23
1989-08-22
Smith, Leonard E.
Pumps
Including disengageable rotary or frangible drive connection
403 2, 464 33, F04B 3500
Patent
active
048591564
ABSTRACT:
A coupling mechanism for a compressor of an automotive air conditioning system which is provided with a safety mechanism for preventing damage to the engine due to compressor failure. A front end plate with a tubular extension which extends in the direction parallel to the axis of rotation of the drive shaft is attached to one end of the compressor housing. A pulley is rotatably supported on said extension by means of a bearing. At its terminal end, the drive shaft is connected to a plate-like element which includes a centrally located hole through which the drive shaft extends. The plate-like element is connected by means of a bolt and a nut and rotates with the drive shaft. The pulley transmits rotational motion from the engine to the shaft through the plate-like element by means of cylindrical members which are interposed between the pulley and the plate-like element. The cylindrical members are made out of an easily destroyed material. If the compressor malfunctions and the drive shaft stops rotating, damage to the engine is prevented since the torque applied by the pulley on the cylindrical members causes them to break allowing the pulley and the plate-like element to be disconnected. The pulley is then free to rotate independently of the plate-like element and drive shaft.
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Sanden Corporation
Smith Leonard E.
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