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:
May. 24, 1983
Filed:
Jul. 01, 1980
Mototaka Nakane, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A device for automatically changing the speed ratio between a drive shaft and a driven shaft, including a pair of pulleys mounted on the drive and driven shafts and each having two opposing flanges of truncated cone shape, the pulleys being linked by a V-belt and one pulley being loaded with centrifugally displaceable weights for the speed-change operation. One of the flanges of each pulley is provided with a cover plate having a flat surface portion perpendicular to the rotational axis in face-to-face relation with a truncated-conical surface of the flange. Centrifugally displaceable weights in the form of rollers are located in contact with and between the flat surface portion and the truncated-conical surface portion displaceably radially outward for the speed-change operation. Each roller is constituted by a pair of cylindrical members fixed in opposite end portions of a short shaft and a cylindrical rotary member rotatably mounted in the middle portion and having an outer diameter slightly greater than the cylindrical members. The roller is held in rolling contact with the truncated-conical surface portion of the flange at the opposite end portions and with the flat surface portion of the cover plate in the middle portion to preclude sliding resistance.