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:
Nov. 13, 2012
Filed:
Nov. 05, 2009
Helmut Kellermann, Langenzenn, DE;
Helmut Kellermann, Langenzenn, DE;
Bühler Motor GmbH, Nürnberg, DE;
Abstract
An electric drive () with a circuit board (), having conductor tracks () and contact openings () with plated through-holes () and equipped with electronic components (), the circuit board () being coated with a protective layer () of insulating material, and press-fit contacts () are inserted into the contact openings () and in electrical contact areas () within the contact openings () electrical contact exists between a press-fit contact () and the plated through-hole () of the contact opening (). The task of the invention is to reliably protect circuit boards of electric drives exposed to moisture and other chemical environmental effects and contact them economically. This task is solved according to the invention in that the protective layer () is a parylene coating, which covers the circuit board (), the electronic components () and the surface areas of the contact openings () and circuit board () directly connected to the contact areas () between at least one press-fit contact () and at least one contact opening ().