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. 31, 2004
Filed:
Nov. 13, 2002
Matthias Stitz, Lohr, DE;
Achim Richartz, Lohr, DE;
Bosch Rexroth AG, Lohr/Main, DE;
Abstract
In a magnet coil arrangement having a wound coil former and having a metal housing surrounding the wound coil former, contact tabs are held in a plug-in base, one of which serves as a protective conductor connection. The contact tab serving as a protective conductor connection is held on the metal housing by a metallic connecting part. The free spaces between the wound coil former, the metal housing and the plug-in base are encapsulated with plastic. At the interfaces between the metal parts and plastic, moisture can enter the magnet coil arrangement. In order to prevent this moisture from getting into the connecting space, in which electric feed lines coming from the outside are connected to the contact tabs, in the area in which the connecting part engages in the contact tab, the contact tab serving as a protective conductor connection is arranged inside the plug-in base. Between the connecting part and the plug-in base there is arranged a sealing part, of which a first sealing face rests on the connecting part and a second sealing face rests on the plug-in base. The magnet coil arrangement is provided to operate valves which are used in fluid engineering.