Shock absorbing rotary drive coupling

Details Shock absorbing rotary drive coupling Shock absorbing rotary drive coupling

E - Fixed Constructions

21

B

255/50, 64/8

E21B 17/02 (2006.01) E21B 3/00 (2006.01) F16D 3/74 (2006.01)

Patent

CA 1060880

ABSTRACT A shock absorbing rotary drive coupling unit for drivingly connecting a tubular drive shaft to an axial- ly aligned tubular driven shaft of a rotary blast hole drill. The unit has an annular body of resilient elastomer sandwiched between and bonded to end plates, with lugs and fasteners for connecting the end plates, respectively, to the drive shaft and the driven shaft.

286733

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