Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1986-09-24
1988-10-04
Olszewski, Robert P.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5714, 81 5738, B25B 2100
Patent
active
047748605
ABSTRACT:
A tong having a non-endless or an endless flexible belt. A belt assembly for mounting, disposing, and moving a flexible belt in a tong or in the rotary of tongs having rotary elements. Such a tong for rotating a tubular member according to the present invention has a housing; a rotary element in the housing which is either turned manually or power driven; mount plates (which can also serve as brake plates) disposed within the housing and movable therein with respect to the rotary element and, upon the action of other member, movable with the rotary element; an anchor assembly mounted to the mount plates; a belt carrier mounted to the rotary element; a flexible belt extending from the anchor assembly to the belt carrier, the belt being tightened around the tubular as the rotary and belt carrier rotate to the point where a portion of the belt is wrapped around the tubular and the belt carrier has moved to contact the anchor assembly and stop up against it or in a recess in the anchor assembly, at which point the anchor assembly and mount plates become stationary with respect to the rotary and move with it.
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Olszewski Robert P.
Terrell William E.
Weatherford U.S. Inc.
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