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. 27, 1989
Filed:
Sep. 28, 1988
Other;
Abstract
This invention relates to a three-phase thermal protector having two pairs of fixed and movable contacts for opening and closing the neutral of wye-connected phase windings of a three-phase induction motor. The protector further includes a header plate having two terminal pins secured by an insulating sealant material respectively, a support plate secured to the header plate, an elastic member disposed so as to be approximately parallel to the support plate, the elastic member having two ends, one of which is secured to the support plate, a thermally responsive element secured at one end thereof to the other end of the elastic member, the thermally responsive element carrying the movable contacts and moving and returning with snap action in response to temperature change, a pivot mounted on a stationary member either at the header plate side or at the support plate side so that the surface of connecting portions of the thermally responsive element and the elastic member is engaged therewith, and an operative temperature calibrating mechanism provided on the support plate for exerting a contact pressure between the movable and fixed contacts.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile