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:
May. 16, 1978
Filed:
Oct. 17, 1975
Applicant:
Inventors:
Jan Lefeber, Tilburg, NL;
Jelis DE Jonge, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01G / ;
U.S. Cl.
CPC ...
29 2542 ; 361298 ; 427 79 ; 427242 ;
Abstract
A method of manufacturing variable capacitors having dielectric-coated sheets. The dielectric is permanently connected to the sheets and is provided by vapor deposition before assembly of the capacitors. The dielectric is preferably a polyparaxylylene material. Electrical contact between the rotor sheets is obtained by arranging the sheets on the rotor shaft with a slight press fit, with or without insertion of spacing rings. Electrical contact between the stator sheets may be obtained by a scratching or grinding operation on the side of the stator stack, or by a layer of solder.