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:
Jun. 21, 2011
Filed:
Dec. 07, 2006
Sung Chul Kang, Seoul, KR;
Munsang Kim, Seoul, KR;
Seung Jong Kim, Seoul, KR;
Seung Kook Yun, Seoul, KR;
Jeonghoon Yoo, Seoul, KR;
Sung Chul Kang, Seoul, KR;
Munsang Kim, Seoul, KR;
Seung Jong Kim, Seoul, KR;
Seung Kook Yun, Seoul, KR;
Jeonghoon Yoo, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
A device for generating and varying stiffness, which may be applied to a joint of a robot manipulator, the stiffness generating device having a rotating shaft connected to a driven member; a rotor fixed to the rotating shaft and having arms comprising a magnetic element; a stator disposed to surround the rotor outside the arms and being connected to a drive motor; electromagnets fixed to an inner periphery of the stator and being opposed to each other about the rotating shaft, each having a core and a coil wound around the core; and means for applying current to the coils. One half of the electromagnets has N-poles at their inward ends and the other half of the electromagnets has S-poles at their inward ends. Current regulating means regulates the current being applied to the coils.