COMPOSITE METAL GEAR FOR AN INTERNAL COMBUSTION ENGINE

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 te...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	JOHNSON, HAL R, LUHMAN, DANIEL J, HIGGINS, TIMOTHY E
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	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.