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:
Aug. 12, 1980
Filed:
Jun. 15, 1978
Kuno Kirner, Gerlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To provide for better distributor radio interference noise suppression and to localize resistance elements used in connection therewith as close to the spark gap of the distributor, the rotor electrode and/or the stationary electrodes in the distributor are made of a resistance material which has a sufficiently high resistance to provide for effective interference suppression; the material may be a high-melting oxynitride, particularly of a metal of the III or IV-B to VI-B groups of the periodic table; or a ceramic substrate, on which a coating is applied, for example of high melting point titanium, zirconium or aluminum oxide which are rendered conductive by being present in less than stoichiometric proportions; or silicon compounds such as chromium-silicon compounds, molybdenum-silicon compounds, with or without a matrix of silicon or ceramic-metal mixture in which the metal is both a binder and a conductive component, particularly Al.sub.2 O.sub.3 -Mo, Cr.sub.2 O.sub.3 -Si, SiC-Cr-Ni and B.sub.4 C.sub.3 -Ni.