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. 01, 2000
Filed:
Oct. 09, 1998
Young Jin Park, Taejun, KR;
Sang Hwa Kim, Busan, KR;
Korea Advanced Institute Science and Technology, Taejun, KR;
Abstract
This invention is intended to provide a semi-active rotary damper that can obtain a large breaking force to disperse a large torque. The rotary damper 100 comprises a damping shaft 111 to be connected to a rotating shaft, and a closed hollow cylindrical housing 113 surrounding the damping shaft 111. A first fluid chamber 116A and a second fluid chamber 116B are formed between an outer face of the damping shaft 111 and an inner face of the housing 113 by a partition 115 and a wing 112. The first fluid chamber 116A and the second fluid chamber 116B are filled with magnetorheological fluid. Meanwhile, an annular solenoid 114 fixed to the housing 113 forms a portion of a flow path 126, 125 and 127 between the first fluid chamber 116A and the second fluid chamber 116B. When switching on the electric current through the coil 122, the annular body 121 is magnetized
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile