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:
Jul. 25, 2000
Filed:
Mar. 16, 1999
Gerhard Scharnowski, Gehrden, DE;
Reinhard Mauentobben, Hannover, DE;
Mannesmann AG, Dusseldorf, DE;
Abstract
An electropneumatic pressure regulating valve has an electromagnet fastened, as an actuating drive, to a valve housing. At least one work connection and a deaeration connection in the valve housing are guided, respectively, to a work chamber and deaeration chamber arranged inside the valve housing. The work chamber and the deaeration chamber are separated from one another by a valve seat corresponding to a valve tappet as closing element. The valve tappet proceeds from the electromagnet and is movable longitudinally through the work chamber via a movable magnet armature of the electromagnet. To improve the deaeration behavior and to achieve a more precise control capability during deaeration, the valve tappet has a through-hole which is directed longitudinally proceeding from its lower disk face and which opens into a pressure-tight coil interior space within the electromagnet. The coil interior space is sealed against the work chamber by a seal which enables the longitudinal movability of the valve tappet.