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:
Aug. 13, 2002
Filed:
May. 19, 2000
Thomas Bayer, Gersheim, DE;
Alpha Getriebebau GmbH, Igersheim, DE;
Abstract
A low-play planetary gear mechanism for high rotational speeds and low torque transmission and having roller bearings for the parts which rotate within the gear mechanism. The gear mechanism is designed for a long, maintenance-free service life in continuous operation at high drive speeds. To accomplish this, the running surfaces of at least some of the gears are coated with a coating that has a higher wear resistance and a lower coefficient of friction than the respectively associated base material. As such, all of the surfaces of the gear mechanism which come into contact with one another are able to run for long periods at the end of assembly of the gear mechanism. With this gear mechanism, there is no circulating lubricating oil originating from a lubricating-oil collection chamber and which flows freely around any of the moving parts of the gear mechanism.