Coupling assembly

Details Coupling assembly Coupling assembly

1990-07-31

1991-09-10

Lorence, Richard

192 clutches and power-stop control

Clutch and brake

Sliding operation

192 30V, 192 7017, 1921061, 464 71, 2671412, F16D 6704, F16D 370

Patent

active

050465937

ABSTRACT:
An improved coupling assembly includes a polyurethane bushing which cooperates with a friction disc to transmit force. The polyurethane bushing reduces noise caused by components of the coupling assembly and reduces the maximum rate of acceleration between elements of the coupling assembly. The polyurethane bushing has a durometer hardness of approximately 92 Shore A and a Bayshore rebound of 20% to 50%. The maximum rate of acceleration between elements of the coupling assembly is less than 30 times the acceleration of gravity while the coupling assembly transmits a torque load which cyclically varies between at least +12,500 pound inches and at most -2,500 pound inches during rotation of elements of the coupling at a speed of at least 645 revolutions per minute. During the transmission of the aforementioned cyclically varying torque load by the coupling assembly, peak noise level caused by components of the coupling assembly is less than 103 decibels and is less than 3.0 Pascals.

REFERENCES:
patent: 2436968 (1948-03-01), Longfield
patent: 2942708 (1960-06-01), Eason
patent: 3305227 (1967-02-01), Henley
patent: 3469664 (1969-09-01), Ortlinghaus et al.
patent: 3650520 (1972-03-01), Vernon et al.
patent: 3677869 (1972-07-01), Chung et al.
patent: 3897859 (1975-08-01), Norcia
patent: 4004669 (1977-01-01), Roderick
patent: 4807731 (1989-02-01), Collins
Brochure Entitled "Clutch Brake Combination" copyrighted 1989, Eaton Corporation.

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