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:
Oct. 11, 2011
Filed:
Aug. 09, 2007
Applicant:
Jun Tamenaga, Obu, JP;
Inventor:
Jun Tamenaga, Obu, JP;
Assignee:
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 57/04 (2010.01);
U.S. Cl.
CPC ...
Abstract
A speed reducer that can fundamentally eliminate the cause of lubricant leakage is provided. A speed reducer that reduces the speed of input rotation includes at least a first space and a second space separated by an oil seal, and the first space and the second space are each put with lubricant. A level of the lubricant put in the first space is set to be higher than a level of the lubricant put in the second space, and the level of the lubricant put in the second space is set to be at or lower the level of a lowermost oil seal among oil seals that separate the second space and the exterior of the speed reducer.