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:
Aug. 06, 1991
Filed:
Nov. 03, 1989
Paul A Markow, Huntsville, AL (US);
William Nolle, Hazel Green, AL (US);
Hugo A Jenrath, Huntsville, AL (US);
John L Evans, Madison, AL (US);
Alfred H Glover, Decatur, AL (US);
Joseph T Betterton, Arab, AL (US);
Acustar, Inc., Troy, MI (US);
Abstract
A radial type air-core gauge includes orthogonally positioned pairs of stator coils wound on independent coil forms spaced radially 90 degrees apart about a central cup of a gauge case. The cup houses a permanent magnet rotor which rotates about a shaft extending from a support bearing in a bottom surface of the cup to a hub of a dial pointer. Movement of the shaft causes a dial pointer to move over a dial face in response to changes of a balanced resultant field caused by variations of excitation signals applied to the stator coils.