Coupling assembly

Details Coupling assembly Coupling assembly

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 67/02 (2006.01) B30B 15/10 (2006.01) F16D 13/38 (2006.01) F16D 13/70 (2006.01) F16D 67/04 (2006.01)

Patent

CA 2047323

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.

nsemble d'accouplement amélioré comprenant une bague de polyuréthanne qui agit avec un disque de friction pour transmettre la puissance. La bague de polyuréthanne permet de réduire le bruit produit par les composants de l'ensemble d'accouplement et de diminuer le taux maximal d'accélération entre les éléments dudit ensemble. La bague de polyuréthanne a une dureté d'environ 92 Shore A et un rebondissement Bayshore de 20 % à 50 %. Le taux maximal d'accélération entre les éléments de l'ensemble d'accouplement est de moins de 30 fois l'accélération due à la pesanteur tandis que l'ensemble d'accouplement transmet un couple normal qui varie cycliquement de + 12 500 livres-pouce à - 2 500 livres-pouce pendant la rotation des éléments de l'accouplement à une vitesse d'au moins 645 tours par minute. Pendant la transmission du couple normal variant cycliquement par l'ensemble d'accouplement, le niveau de bruit de crête produit par les composants est inférieur à 103 décibels et inférieur à 3,0 pascals.

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