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:
Oct. 16, 2001
Filed:
Jul. 14, 1999
Kurt Klein, Klingenberg, DE;
Detlef Wahl, Erlenbach, DE;
Heiko Schliessmann, Eschau, DE;
Helmut Berninger, Obernburg, DE;
Bernd Friebe, Neu-Anspach, DE;
Burkard Meisenzahl, Bürgstadt, DE;
Wika Alexander Wiegand GmbH & Co., Klingenberg, DE;
Abstract
The measuring instrument for a pressure gauge comprises an indicator unit (,) with two plates (,) that bear rotatably an indicator shaft (,) carrying a pinion (,) and that furthermore bear a gear segment (,). The measuring instrument furthermore comprises a metal Bourdon tube (,) bent into an arc shape, which is soldered on one end to a spring carrier (,) and on the other to a spring end-piece (,). The spring end-piece (,) is connected to the gear segment (,) such that the displacement of the spring end-piece (,) because of the measurement pressure is transferred to the gear segment (,). The spring end-piece (,) constitutes a part that is rigidly attached to one of the two plates (,) prior to the Bourdon tube (,) being soldered to the spring end-piece (,) and that is separated from this plate once the Bourdon tube (,) has been soldered to the spring end-piece (,). During the course of the manufacture of this measuring instrument, the spring end-piece (,) is produced as a part that is securely joined to the two plates (,). The Bourdon tube (,) is soldered to the spring end-piece (,) while the latter is still rigidly affixed to the plate. It is not until thereafter that the spring end-piece (,) is separated form the plate. Preferably the spring carrier (,) is integral to or attached to one of the two plates (,). The spring end-piece (,) assumes its target position with greater accuracy with respect to the indicator unit (,).