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:
Mar. 11, 2003
Filed:
Nov. 30, 1998
Applicant:
Inventors:
Paul Cordes, Whitley Bay, GB;
Philip McGonnell, Horsham, GB;
Peter Ward, Cramlington, GB;
Andrew John Fraser, Ashbrooke, GB;
Assignee:
Transco PLC, London, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 3/12 ;
U.S. Cl.
CPC ...
G01V 3/12 ;
Abstract
A measuring device for determining the thickness of a non-homogeneous medium such as the thickness of a road structure. The device includes a radar transmitter and two spaced receivers. Information on the timing of the transmitted signal as well as the signals received by the two receivers is used to calculate the material thickness while eliminating signal drift.