F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 55/14 (2006.01) F01L 1/047 (2006.01) F16H 55/06 (2006.01)
Patent
CA 2221420
A cam shaft is provided to operate the valves of an internal combustion engine and has a shaft with cam surfaces that are engaged by mechanisms that open and close the valves. A steel gear is attached to the shaft and has a major surface bounded by a outer circumferential edge with a plurality of teeth. The major surface has an annular groove and a dampening ring is secured in the groove. The dampening ring is fabricated of a material, such as zinc, which has a different acoustical impedance than the gear thereby providing a barrier to transmission of acoustical energy through the gear.
Arbre à cames actionnant les soupapes d'un moteur à combustion interne. La surface des cames est engagée par des mécanismes qui ouvrent et ferment les soupapes. Un engrenage en acier est fixé à l'arbre et comporte une surface principale fixée à un rebord circonférentiel extérieur à dents multiples. La surface principale comporte une rainure annulaire à laquelle un anneau d'obturation est fixé. L'anneau est fabriqué à partir d'un matériau, par exemple du zinc, dont l'impédance acoustique est différente de celle de l'engrenage, ce qui fait obstacle à la transmission de l'énergie acoustique par l'engrenage.
Higgins Timothy E.
Johnson Hal R.
Luhman Daniel J.
Kohler Co.
Marks & Clerk
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