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:
Jun. 21, 1977
Filed:
Sep. 02, 1975
Mario Possati, Bologna, IT;
Franco Danielli, Bologna, IT;
Abstract
The present invention relates to a method and apparatus for detecting the geometrical features of mechanical workpieces, particularly for measuring eccentricity and out-of-roundness of cylindrical and revolution surfaces in which at least two size checks on relevant sections of the cylindrical surface and at least two size checks on the same section of the revolution surface are carried out and the data resulting from the checks are processed to supply an indication of the eccentricity of the two surfaces and of the roundness of the section of the revolution surface. The apparatus includes a plug carrying feelers which is automatically positioned with respect to a workpiece and then revolved, so that feelers carry out measurements. The apparatus is used for checking valve guide holes and valve seats of engines and similar workpieces.