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. 06, 1989
Filed:
Apr. 26, 1988
Applicant:
Inventor:
John A McDougal, Detroit, MI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
336185 ; 29605 ; 24211841 ; 336 83 ; 336192 ; 336198 ;
Abstract
Several embodiments of coil assemblies suitable for a variety of uses are disclosed herein all of which employ spiral windings which minimizes coil layer-to-layer voltage gradients to levels which conventional enamel wire insulation is able to withstand. In one embodiment a bobbin-type support structure is provided comprised of a plurality of interfitted disc elements which are specifically adapted to accommodate a plurality of spiral windings which may be easily formed thereon.