192 clutches and power-stop control – Clutches – Axially engaging
Patent
1989-12-29
1991-07-23
Herrmann, Allan D.
192 clutches and power-stop control
Clutches
Axially engaging
193107R, 193107M, F16D 1340, F16D 1358
Patent
active
050335995
ABSTRACT:
There is disclosed an automotive clutch in which frictional engagement faces of a clutch are provided with an organic composite facing and a sintered metal facing. By this combination, the benefits of both types of facings are obtained without any of the disadvantages that formerly plagued the use of these facings. In the invention, the organic composite facing provides the low temperature service for the clutch with a suitably high coefficient of friction which is relatively constant from ambient to several hundred degrees F. The sintered metal facing provides high temperature service for the clutch. Thus, when the organic composite facings reach their maximum service temperature of around 500 degrees F., the sintered metal facings provide their optimum coefficient of friction, resulting in a subassembly in which the overall or average coefficient of friction remains substantially constant from ambient temperatures to the maximum service temperature of the sintered metal coatings, in excess of 900 degrees F. The result, when incorporated in an automotive clutch, is a clutch having a very smooth, non-vibrational action which does not exhibit premature wear and failure.
REFERENCES:
patent: 4202432 (1980-05-01), Komori
patent: 4615427 (1986-10-01), Majima
patent: 4727972 (1988-03-01), Mueller
patent: 4741424 (1988-05-01), Kitano et al.
patent: 4830164 (1989-05-01), Hays
Herrmann Allan D.
Whitelaw Nicholas
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