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. 09, 1984
Filed:
Aug. 12, 1982
Werner Grunwald, Gerlingen, DE;
Jurgen Schmatz, Ludwigsburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
In order to make possible the lower level of electrostatic disturbance that accompanies the use of a wider than usual gap in an ignition distributor without undesirable increase of the ignition pulse voltage, the distributor electrode and/or the fixed ignition circuit electrodes of the distributor are made at least in part of a material that requires less energy for pulling out an electron and has a higher secondary electron emission capability than the usual brass plate used for the contact plate at the axis of revolution of the distributor rotor, to which a carbon brush is usually provided for making contact. Alloy additions of calcium oxide or barium oxide or silicon to brass have a suitable effect and an alloy containing silicon and preferably also aluminum and calcium is preferred. The gap width is between 3 and 5 mm, preferably about 4 mm for normal motor vehicle engine application.