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:
Feb. 17, 1987
Filed:
May. 28, 1985
Erich Niedermayr, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
An apparatus for determining deviations of a circular form of a dynamically balanced part characterized by a spindle which can be set in approximate alignment with the axis of the unit under test, an interval sensor rotated around the spindle axis for radially sensing a circumferential surface of the unit under test and electronic signal processing unit for separating a deviation signal component of the sensor signal created by a deviation from the circular form that is detected from other signal components of the sensor signal which are created from an eccentric setting of the spindle with respect to the axis of the unit under test. As a result of such a signal analysis, errors occurring from the eccentric spindle setting are practically avoided. Thus, no high demands are made for the spindle setting when making, for example, a roundness check of a steel pipe.