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:
Apr. 10, 1984
Filed:
Mar. 02, 1983
Applicant:
Inventor:
John L Myers, Tipp City, OH (US);
Assignee:
Ledex, Inc., Vandalia, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335230 ; 335234 ;
Abstract
An electric trip solenoid employs a pair of low-cost retaining or holding magnets in an open frame arrangement in which the magnets are positioned on opposite sides of the flat surfaces of a pole and in contact with the pole and the legs of an open frame. The magnets are thickness oriented so as to distribute their flux through relatively large areas avoiding regions of high flux density. In one embodiment the release point may be adjusted by rotating a screw in a closure plate to vary the reluctance of the secondary flux path therethrough.