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:
Nov. 26, 2002
Filed:
Oct. 26, 2000
Masaki Ochiai, Hyogo, JP;
Kyotaro Yanagi, Hyogo, JP;
Hideaki Kawahara, Hyogo, JP;
Ryuichi Kido, Hyogo, JP;
Bando Chemical Industries, Inc., Hyogo, JP;
Abstract
Disclosed is a belt tooth portion of a toothed belt incorporated in a toothed belt power transmission apparatus for use in equipment for business use. The belt tooth portion comprises tooth root portions formed of circularly arcuate surfaces which are arranged symmetrically with each other in respect to a centerline C in the tooth width direction, power transmission portions formed of circularly arcuate surfaces of convex profile which contiguously adjoin the tooth root portions and are arranged symmetrically with each other in respect to the tooth width direction centerline C , tooth tip portions formed of circularly arcuate surfaces which contiguously adjoin the power transmission portions and are arranged symmetrically with each other in respect to the tooth width direction centerline C , and a tooth crest surface formed of an approximately flat surface which interconnects the tooth tip portions The maximum pressure angle &thgr;B at a connection point of the power transmission portion and the tooth root portion is set at from 15 degrees to 25 degrees. As a result of such arrangement, the nonuniformity of velocity of the toothed belt is reduced as low as possible, thereby providing improvement in the printing accuracy and image quality of equipment for business use.