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:
Dec. 29, 1981
Filed:
Nov. 01, 1979
Colin K Ange, Charlotte, NC (US);
Marshall J Rouse, Waxhaw, NC (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An apparatus for measuring the bore diameter of a hollow member whose bore diameter can change in the axial direction. The bore diameter measuring apparatus includes a probe portion, means for inserting the probe portion in the bore, and means for converting a signal supplied thereto by the probe to a bore diameter indication. The probe portion has a housing structure, a plurality of legs which are radially expandable relative to the housing structure, means for radially displacing the legs, and means for measuring the axial displacement of the radial displacing means. The legs are radially displaceable from a retracted position substantially within the radial outline of the housing structure to selected positions radially therebeyond so as to permit entry of the probe portion through a relatively small portion of the bore and expansion radially outwardly in a large portion of the bore. Probe portion legs may be displaced to suitable radial positions to accommodate changes in the rotor bore diameter size between selected axial positions of the bore.