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:
Jan. 18, 1977
Filed:
Nov. 20, 1974
Kurt Arnold, West Caldwell, NJ (US);
Valcor Engineering Corporation, Kenilworth, NJ (US);
Abstract
A position indicating pulse latching solenoid has a plunger of paramagnetic steel, movable between two stops of similar material, and fixed permanent magnets which impart a flux to the plunger causing it to adhere to the stop to which it is moved, movement being accomplished by a respective winding about each stop which when excited by an electrical pulse momentarily exerts an attractive force on the plunger. A reed switch senses the momentary flux generated by the excited winding at a leakage gap near one of the stops and also determines whether the flux imparted to the plunger by the permanent magnets has shifted with the plunger to or away from the gap to indicate plunger position.