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:
Feb. 05, 2002
Filed:
Dec. 30, 1999
Walter Wirz, Pfaffikon, CH;
Reishauer AG, Wallisellen, CH;
Abstract
The gear consists of a housing ( ) to which a drive motor ( ) is flanged. Its shaft ( ) carries a sun wheel ( ) on which multiple planets ( ) roll off. The planets ( ) are positioned on a planetary carrier ( ) which is rigidly connected to the output shaft ( ). The shaft ( ) is supported in the housing ( ) coaxial to the shaft ( ). Mounted to the housing ( ) is a flange ( ) of a cup-shaped annular wheel ( ). Its lower rim ( ) has a running surface ( ) inside, on which the planets ( ) roll off. The diameter of the running surface ( ) is smaller than the sum of the diameter of the sun wheel ( ) and twice the diameter of the planets ( ), so that the rim ( ) is elastically deformed. The planets ( ) are supported rigidly in the circumferential direction and flexibly in the radial direction on the planetary carrier ( ). Through this implementation, a backlash-free, rotationally very rigid gear is obtained with which high torques can be transferred in smooth operation.