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. 20, 1984
Filed:
May. 09, 1983
Applicant:
Inventor:
Wilhelm Kunzfeld, Graz, AT;
Assignees:
Avl Gesellschaft Fur Verbrennungskraftmaschinen Und Messtechnik m.b.H., Graz, AT;
Prof.Dr.h.c. Hans List, Graz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731172 ;
Abstract
An extraneously driven piston engine is fitted in the region of its valve ar with solid-borne vibration pick-ups which are connected to a processor unit. An angle-mark transmitter on the crank assembly controls a gate circuit which within specified zones of crank angle, feeds the vibration signals into a limit-value circuit which, by a comparison of levels, provides a 'good/bad' information read-out.