Sprocket
AssigneeTsubakimoto Chain Co.
InventorsShoichiro Shimizu, Yuta Watanabe
Life of this patent
Estimating the term…
Abstract
To provide a sprocket that not only reduces impact and hitting noise caused by contact and seating of a chain when it meshes with the sprocket, but also simplifies a setting of process conditions for securing a cushion ring on a side face of a sprocket body. The sprocket includes the sprocket body formed with a plurality of teeth on a circumferential surface thereof, and the cushion ring provided to at least one side face of the sprocket body and having an outer circumferential surface that makes contact with link plates of a chain. The cushion ring is secured to the sprocket body without an adhesive layer.
Claims8
A sprocket comprising a sprocket body with a plurality of teeth on a circumferential surface thereof, and a cushion ring on at least one side face of the sprocket body,
- the cushion ring having an outer circumferential surface for making contact with link plates of a chain, and
- secured to the sprocket body without an adhesive layer,
- wherein the cushion ring is made of a thermoplastic resin which comprises a polyester elastomer composed of acrylic rubber and polyester,
- wherein the sprocket body comprises
- a boss continuously formed at the at least one side face of the sprocket body and having an outer circumferential surface and a boss recessed portion that is set back from the outer circumferential surface, and
- a through hole formed at the at least one side face of the sprocket body, and
- wherein the boss recessed portion and the through hole are continuously formed extending through the at least one side face of the sprocket and filled with the thermoplastic resin of the cushion ring.
Dependencies are inferred from the claim text.