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:
Jun. 23, 1987
Filed:
Dec. 23, 1985
Takashi Tomiyori, Suzurandainishi, JP;
Takahiro Senoo, Kobe, JP;
Mitsuboshi Belting Ltd., Kobe, JP;
Abstract
A variable speed power transmission belt drive apparatus wherein a pair of asymmetric cross section drive belts are utilized in conjunction with complementary sheaves, including a pair of axially adjustably spaced outer sheaves and an intermediate sheave. The outwardly facing side faces of the intermediate sheave are substantially planar and substantially perpendicular to the axis of the shaft on which the pulley is mounted. The inwardly facing surfaces of the outer sheaves are conical and the side surfaces of the belts are complementary to the confronting faces of the sheaves. Fluid pressure structure is provided for applying substantially equal forces to the speed-adjusting sheaves in effecting the speed-adjusting operation. In the illustrated embodiment, the angled surfaces of the belts and outer sheaves extend at an angle in the range of approximately 5.degree. to 30.degree. to the flat center plane of the belts, and the complementary outer surfaces of the intermediate sheave and confronting, substantially planar surfaces of the belts extend at an angle in the range of approximately 0.degree. to 5.degree. to the center plane of the belts.