Ratchet assembly for transmitting movement in a downhole tool

Details Ratchet assembly for transmitting movement in a downhole tool Ratchet assembly for transmitting movement in a downhole tool

E - Fixed Constructions

21

B

166/1

E21B 47/00 (2006.01) E21B 34/10 (2006.01) E21B 43/25 (2006.01) E21B 47/06 (2006.01) E21B 47/10 (2006.01) E21B 49/08 (2006.01)

Patent

CA 1229037

ABSTRACT There is disclosed a ratchet assembly for selec- tively transmitting relative longitudinal movement between a first to a second element of a downhole tool. The assembly comprises a slot associated with one of these elements; a ball seat associated with the other element; a ball received in the ball seat and extending into the slot; and a swivel adapted to permit substantially unimpeded lateral movement of said ball in the slot.

528668

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