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. 10, 2003
Filed:
Nov. 30, 2001
Applicant:
Inventor:
Ming-Shan Wang, Taoyuan Hsien, TW;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 7/116 ; H01H 7/158 ; H01H 3/702 ;
U.S. Cl.
CPC ...
H01H 7/116 ; H01H 7/158 ; H01H 3/702 ;
Abstract
A safety switch is constructed to include two metal contact plates, a bimetal contact plate suspended from one metal contact plate, a switching handle, a push and pull bar pivoted to the switching handle and driven by the switching handle to move the bimetal contact plate between the “On” position and the “Off” position, and a S-shaped metal spring plate adapted for supporting and guiding movement of the push and pull bar for enabling the bimetal contact plate to trip off automatically upon an overload despite of the positioning of the push and pull bar or the switching handle.