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:
May. 01, 2018
Filed:
Dec. 15, 2011
Applicants:
Masayuki Oohira, Tokyo, JP;
Katsuaki Suzuki, Ryugasaki, JP;
Arata Tanaka, Ryugasaki, JP;
Inventors:
Assignee:
Littelfuse Japan G.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 37/34 (2006.01); H01H 37/54 (2006.01); H02H 5/04 (2006.01); H02J 7/00 (2006.01); H01C 7/02 (2006.01); H01H 37/52 (2006.01);
U.S. Cl.
CPC ...
H01H 37/34 (2013.01); H01H 37/54 (2013.01); H02H 5/042 (2013.01); H02H 5/047 (2013.01); H02J 7/0031 (2013.01); H01C 7/02 (2013.01); H01H 37/52 (2013.01);
Abstract
The present invention provides a protection device which provides a greater degree of freedom in a disposition of the bimetal switch as well as be able to more accurately control an actuation of the bimetal member of the bimetal switch. The protection device characterized in that the device comprises a bimetal switch wherein a first PTC member and a bimetal member are connected electrically in parallel with each other; and a second PTC member; and the bimetal member is disposed to be actuated by tripping of the second PTC member.