E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/29
E21B 31/113 (2006.01) E21B 31/12 (2006.01)
Patent
CA 1195315
ABSTRACT A jar tool having a mandrell and a housing substantially surrounding said housing. The mandrell and housing are splined such that they may move longitudinally relative to each other. First and second pairs of abutment faces for the jar and bump strokes respectively, are provided between the mandrell and the housing. Both sets of abutment faces are enclosed within the jar tool.
428121
Bralorne Resources Limited
Uren John Russell
LandOfFree
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