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. 20, 1988
Filed:
May. 05, 1987
Applicant:
Inventor:
Alan Meadows, Stretton, GB;
Assignee:
Coal Industry (Patents) Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
340856 ; 340857 ; 174 47 ;
Abstract
A telemetry system for borehole drilling comprises an effectively continuous length of hardwire cable which extends along a drill string located in a borehole between electrical signal control, indication equipment situated outside the borehole and probe means situated within the borehole. The effective continuous length of hardwire includes a store of hardwire constituted by a bonded wound hollow coil of hardwire located adjacent the probe means.