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:
Nov. 25, 1986
Filed:
Feb. 06, 1986
Herbert Frisch, Vienna, AT;
Enfo Grundlagenforschungs AG, Dottingen, CH;
Abstract
An electro-pneumatic signal converter is provided with a piezo-electric bending element (3) disposed in a sealed transmitter casing (1) from which a signal output (4) issues. It controls a pneumatic signal transmitter which consists of an air inlet seating (5) and an air outlet seating (6) provided opposite each other in the transmitter casing (1). The piezo-electric bending element (3) is pretensioned against the air inlet seating (5) by a spring. In order to improve its retention and guiding, the piezo-electric bending element (3) is disposed in a chamber (2) which closely surrounds it in the transmitter casing (1), in which support zones (14, 16) spaced-apart in the axial direction are provided for the bending element (3), and in addition the piezo-electric bending element (3) is retained and urged against the support zones (14, 16) by a guide spring (7) fixed in the transmitter casing (1).