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:
Jun. 16, 2009
Filed:
Jun. 07, 2006
Claudio Cavalloni, Regensdorf, CH;
Dieter Karst, Stein Am Rhein, CH;
Peter Wolfer, Kleinandelfingen, CH;
Stefan Brechbühl, Weinfelden, CH;
Claudio Cavalloni, Regensdorf, CH;
Dieter Karst, Stein Am Rhein, CH;
Peter Wolfer, Kleinandelfingen, CH;
Stefan Brechbühl, Weinfelden, CH;
Kistler Holding, AG, Winterthur, CH;
Abstract
An acceleration-compensated pressure pick-up, for example for the measurement of dynamic processes in gaseous or liquid media, comprises an external housing and a pre-assembled inner part having a flange at its assembly end. The inner part is securely fixed to the housing only at the flange. A first mass is connected via a first resilient connection to the flange, and a second mass is connected to the flange via a second resilient connection. A first measurement crystal is inserted under pre-tension between the two masses. A third mass and a compensation crystal are arranged between the first measurement crystal and the second mass, and the compensation crystal is electrically connected in opposition to the first measurement crystal. The two rigidities of the resilient connections and the three masses are matched so that the measurement values which can be determined at the crystals due to an axial acceleration acting on the housing compensate each other.