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:
Jun. 28, 2005
Filed:
Nov. 25, 1997
Applicant:
David Balfour Smith, Stonehaven, GB;
Inventor:
David Balfour Smith, Stonehaven, GB;
Assignee:
Metrol Technology Limited, Aberdeen, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04H009/00 ; G01V001/40 ;
U.S. Cl.
CPC ...
Abstract
Data is transmitted along a borehole containing a drill stem () by means of a transmitter () which converts electric data signals to acoustic signals propagating along the drill stem (). The acoustic signals are converted back to electric form by a receiver () which also processes the signals. In the preferred form the signals are stored in a receiver memory () for subsequent retrieval using a pick-up tool () lowered into the borehole. The system is particularly useful in moving data past an obstruction such as a shut-in valve ().