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:
Sep. 08, 1987
Filed:
Feb. 03, 1986
Applicant:
Inventor:
Masaru Arakawa, Chigasaki, JP;
Assignee:
Nifco Inc., Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
7457 / ; 74574 ;
Abstract
A rotary damper comprises a driven gear having a cylindrical projection projecting from its rear surface and a case with a bottom and having a cylindrical groove, the cylindrical projection being received in the cylindrical groove, grease filling a gap defined between the cylindrical projection and the cylindrical groove, an outer wall of the case defining the cylindrical groove being formed on its inner periphery and adjacent to its distal end with an annular depression having a greater outer diameter than the diameter of the inner periphery, and the grease being partly forced out into the annular depression.