Elevator/spider with counterbalance

Details Elevator/spider with counterbalance Elevator/spider with counterbalance

E - Fixed Constructions

21

B

255/14.2

E21B 19/10 (2006.01) E21B 19/07 (2006.01)

Patent

CA 1218644

ABSTRACT An elevator/spider having a series of slips in a tapered bowl and a yoke for pivotally setting slips a torsion spring is mounted on the body of the elevator/ spider. A wire rope connects the torsional spring to the yoke, so that the weight of the slips is counterbalanced by the force of the torsional spring.

466482

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