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:
Nov. 28, 2006
Filed:
Feb. 17, 2006
Jong-sung Kang, Cheongju-si, KR;
Yun-hyuk Kwon, Seoul, KR;
Seok-hyun Nam, Hwaseong-si, KR;
Bang-wook Lee, Cheongju-si, KR;
Won-joon Choi, Cheongju-si, KR;
Jong-Sung Kang, Cheongju-si, KR;
Yun-Hyuk Kwon, Seoul, KR;
Seok-Hyun Nam, Hwaseong-si, KR;
Bang-Wook Lee, Cheongju-si, KR;
Won-Joon Choi, Cheongju-si, KR;
LS Cable Ltd., Seoul, KR;
Abstract
Disclosed is a breaker for providing successive trip mechanism based on PTC current-limiting device, which includes a first switch having first fixed/movable contact points; a second switch having second fixed/movable contact and connected to the first switch in parallel; PTC current-limiting device connected to the first and second switches in parallel or series and allowing a change of current flow direction from the first switch to the second switch at a fault current; a movable arm to which the movable contact points are installed at an interval therebetween and opening/closing the switches by operating the movable contact points; a fixed arm including first and second fixed arm conductors for guiding current flow toward the first fixed contact point in a normal load current mode and guiding current flow toward the second fixed contact point via the PTC current-limiting device in a fault current mode; and a successive trip means for elastically biasing the second switch by operation of the movable arm in a closing direction when both switches are closed and successively tripping both switches using time taken for releasing the elastic bias of the second switch when the movable arm is operated in a tripping direction.