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:
Jul. 23, 1996
Filed:
Nov. 29, 1994
Junichi Shigeura, Amagasaki, JP;
Aizoh Kubo, Kyoto, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Aizoh Kubo, Kyoto, JP;
Abstract
A gear device improved in lowering the product of the load F acting on a pair of intermeshing teeth and the relative sliding velocity v at the area of contact of the gears, thereby minimizing the frictional heat. The gear device includes a first gear and a second gear each having a tooth profile formed by an involute curve. At least one of the first and second gears is provided with the tooth profile corrected by a combination of a correction curve W and the involute curve. On plane coordinates consisting of an x axis, an origin and a y axis which intersects with the x axis at the origin, the correction curve W is expressed by equations passing through points P.sub.1 (x.sub.1, y.sub.1) and P.sub.2 (x.sub.2, y.sub.2) and satisfying the conditions of: y=0, dy/dx=0 at the origin when x.sub.1 <x.sub.2 and y.sub.1 <y.sub.2. The x axis is the line of action indicative of a locus along which an intermeshing point moves while the first gear transmits a force to the second gear. The origin is a point at which the x axis intersects with an intermeshing pitch circle of the first and second gears.