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:
Jan. 16, 2001
Filed:
Mar. 18, 1999
Applicant:
Inventors:
Herbert Frisch, Schelmenstrasse, AU;
Hannes Wirtl, Colmarerstrasse, DE;
G{umlaut over (u)}nther Strasser, Rottenbuch, DE;
Assignee:
Hygrama AG, , CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 1/3044 ; F16K 3/102 ;
U.S. Cl.
CPC ...
F15B 1/3044 ; F16K 3/102 ;
Abstract
A piezoelectric bending element is sealingly insertable into a chamber in a housing and controls with its free end at least one sealing seat corresponding to an applied control current. The bending element has a covering made of partially elastic insulating material and which also seals off the chamber at the proximal end. The bending element is electrically insulated and sealed off against the medium to be controlled, and electrical contacts lie outside of the working area of the valve.