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. 12, 1982
Filed:
Aug. 27, 1980
Roland Stahl, Freiberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To permit ease of manufacture and eliminate the necessity to apply a heater to the inside of a closed tube, a solid electrolyte, in elongated plate form is located within a housing which includes a sealing element separating the elongated plate into two portions; one portion (11/1) is exposed to the gas to be tested, the other portion (11/2) separated from the first portion (11/1) by a gas tight seal (16) positioned in the housing (12) is exposed to a reference gas, typically the oxygen in ambient air; the elongated plate extends to a terminal end portion (11/3) retained in a ceramic holder (14) for example by means of a plastic bushing (33), formed with an opening (34) to permmit access of the reference portion (11/2) to ambient air. Preferably, the electrodes (37, 38) are applied to one major surface (36) of the plate, the opposite side (40) having one or more heater elements (42, 44) applied thereto, for example by printing or vapor deposition and in alignment with the respective electrodes.