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1. (WO2018222361) SPINNER ASSEMBLY WITH FOUR BAR LINKAGE DEVICE

Pub. No.:    WO/2018/222361    International Application No.:    PCT/US2018/031960
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri May 11 01:59:59 CEST 2018
IPC: E21B 19/16
Applicants: FORUM US, INC.
Inventors: VO, Han
Title: SPINNER ASSEMBLY WITH FOUR BAR LINKAGE DEVICE
Abstract:
A spinner assembly including a jaw assembly having a first portion and a second portion, and a linkage assembly coupled to the first and second portions of the jaw assembly. The linkage assembly comprises a first bar coupled to a pivot point, a second bar coupled to the first bar by a first pin, a third bar coupled to the second bar by a second pin, and a pair of links coupled to the pivot point and the third bar. The linkage assembly is configured to move the first and second portions along a substantially linear plane.