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:
Apr. 30, 1991
Filed:
Feb. 26, 1990
Wilhelm Schmidt, Lorrach, DE;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
An apparatus for the detection of chemical equalization processes in aqueous solutions, in particular for the determination of pH values and/or redox potentials, is described. The apparatus, a so-called interchangeable probe, includes an essentially cylindrical probe body, with a calibrating chamber and with an immersion pipe axially displaceable in a bore of the probe body and having at its front end a protective cylinder, the area adjacent to the immersion pipe being perforated in a basket-like manner. An electrode is set into the immersion pipe with the head of the electrode being located within the basket like perforated area of the protective cylinder. An annular gap between the immersion pipe and the inner wall of the probe body is sealed by at least three gaskets, located on the inner wall of the probe body. The first gasket is located above the calibrating chamber and the second and the third gaskets are located under the calibrating chamber and the distance between two adjacent gaskets is larger than the length of the perforated area.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile