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:
Aug. 25, 1998
Filed:
Oct. 04, 1996
Applicant:
Inventors:
Gavin Stuart Littlejohn, York, GB;
Albert Alexander Rodger, Aberdeen, GB;
Assignees:
Aberdeen University, , GB;
The University of Bradford, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; E02D / ;
U.S. Cl.
CPC ...
367 13 ; 73594 ; 73579 ;
Abstract
A method and apparatus for monitoring the condition of a ground anchorage including a tendon arranged in a bore in a group formation at a site is characterized by detecting the vibrational response signature of the anchorage to an impulse load. The vibrational response signature to the impulse is recorded and compared with a reference signature from which any changes in the integrity of the anchorage can be determined.