E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/62
E21B 17/10 (2006.01)
Patent
CA 1190145
ABSTRACT OF THE DISCLOSURE. A protector for a drill string comprises a sleeve with an internal reinforcement the sleeve being split at teeth and when located on a drill string pipe the free ends are held together by a pin passing through slots in the teeth. A V-shaped notch lies diametrically opposite to the teeth and this notch facilitates opening of the protector to enable easy mounting on a drill pipe.
430018
Bereskin & Parr
Drexel Oilfield Services (hk) Ltd.
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