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. 28, 1991
Filed:
Jun. 20, 1990
Applicant:
Inventors:
Shiro Umezono, Yokohama, JP;
Minoru Maki, Yokohama, JP;
Assignee:
Nippon Gear Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ; B23F / ;
U.S. Cl.
CPC ...
74425 ; 74458 ; 51287 ; 409 38 ; 409 48 ; 409 66 ; 409 76 ;
Abstract
The present invention relates to a speed reduction apparatus for globoid worm gears. The speed reduction ratio of the engaged worm globoid worm gear and worm wheel is defined as the ratio of the rate of rotation of the globoid worm gear about its axis to the rate of rotation of the worm wheel about its axis. The structure of the present invention speed reduction apparatus is defined by the distance between the axes of rotation of the worm wheel and globoid worm gear and the spacial and speed relationships between the globoid worm gear and the surfaces of the cutting tool employed to generate the worm gear.