The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2015
Filed:
May. 17, 2011
Kouji Morishige, Nabari, JP;
Kouji Morishige, Nabari, JP;
BorgWarner, Inc., Auburn Hills, MI (US);
Abstract
ISSUE To reduce operating noise and further improve durability in a cushioning structure for a sprocket used in a roller chain or bush chain. MEANS OF RESOLUTION Annular first and second cushion ringsare provided in such a way as to be able to slide against each other around groovesin a sprocket. The first cushion ringconsists of a single wire and has a wave-like shape comprising a plurality of projections. The second cushion ringconsists of a single wire and has a circular shape running around the outer circumference of the sprocket. When a roller chainmeshes with the sprocket, the rollersmake contact with the second cushion ringcausing the second cushion ringto elastically deform, then causing the first cushion ringto elastically deform. At this point, the first and second cushion ringsslide against each other. As a result, the impact noise of the rollersand the sprocket teethis effectively reduced.