| 摘要 |
<p>A drive sprocket assembly (14) for driving an endless chain assembly (20) for propelling a vehicle (10) includes a support hub (22) which is mountable to the power output portion (12) of the vehicle (10) and a plurality of replaceable teeth (24) which are mountable to the hub (22). Each tooth (24) is resiliently isolated from the support hub (22), and resilient to the chain assembly (20), by non-metallic materials (26, 30) to reduce noise generated by the sprocket teeth (24) striking the endless chain assembly (20). Conventional drive sprocket assemblies use a one piece toothed sprocket, or segments having several teeth, bolted to a support member. These prior sprocket assemblies generate considerable noise from impacting of the sprocket teeth with an endless chain. The subject sprocket assembly (14) produces low levels of noise by utilizing individual replaceable teeth (24) which are isolation mounted to the sprocket support hub (22).</p> |
