초록

A jaw unit (102) for use in a tong which comprises a jaw holder (105) and a jaw (106) movable with respect to said jaw holder (105), characterised in that said jaw (106) is slidably mounted on said jaw holder (105).

대표청구항 ▼

[ What is claimed is:] [1.]1. A rotary for use in a tong, comprising: a casing defining an opening for entry and removal of a tubular in a radial direction and having a peripheral wall with an inner face;cams on said inner face of said peripheral wall;first and second jaw holders supported on said c

[ What is claimed is:] [1.]1. A rotary for use in a tong, comprising: a casing defining an opening for entry and removal of a tubular in a radial direction and having a peripheral wall with an inner face;cams on said inner face of said peripheral wall;first and second jaw holders supported on said casing for guidance by said cams and for rotation between convergent positions where said first and second jaw holders converge for gripping the tubular and divergent positions where said first and second jaw holders diverge for release of the tubular; andfirst and second jaws slidably mounted on said first and second jaw holders;wherein, in said divergent positions of said first and second jaw holders, said first and second jaws are slidable by contact with the tubular along arcuate paths between first positions in which the tubular is insertable into and removable from said rotary and second positions in which said jaws surround and are able to grip the tubular.