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:
Mar. 17, 1992
Filed:
May. 23, 1990
Applicant:
Inventors:
Assignees:
Burkert GmbH Werk Ingelfingen, Ingelfingen, DE;
Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264130 ; 137 15 ; 1376253 ; 164 47 ; 164 72 ; 264242 ; 264255 ; 264264 ; 264317 ; 264338 ;
Abstract
The plate-like valve elements (10 and 20) of the microvalve are provided with a plurality of valve seats and, respectively, corresponding valve members. The sealing surfaces of a secondary valve element (10) are respectively formed by molding to copy the sealing faces of a primary valve element (20) so that the sealing surfaces of both valve elements are completely complementary to each other. The sealing surfaces need no further processing such as machining. Despite liberal tolerances of manufacture a high precision register of the valve elements in relation to each other is ensured.