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. 16, 2008
Filed:
Apr. 25, 2007
Applicant:
Nicholas Barrington Orchard, Bristol, GB;
Inventor:
Nicholas Barrington Orchard, Bristol, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 21/08 (2006.01); G01N 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A calibration block for use in calibrating a thickness gauge having a diameter d, wherein the block has a measurement face and a recess extending inwardly of the block from a face opposite the measurement face, the recess having a maximum transverse dimension at the opposite face which is not less than 3d, and in that the bottom of the recess is inclined relative to the measurement face in all directions from a central region of the bottom of the recess, the measurement face comprising a reference feature, the location of which corresponds to a specific point on the bottom of the recess.