Wellbore tong
AssigneeWeatherford Technology Holdings, LLC
InventorsKevin Wood, Arne Tjark Becker
Life of this patent
Estimating the term…
Abstract
A tong for use at a wellbore includes a tong body; at least one door pivotally coupled to the tong body and movable between an open position and a closed position; a carrier ring rotatable relative to the tong body; and a brake plate coupled to the carrier ring. The tong also includes a brake band configured to move with the at least one door between the open and closed positions, and a braking member for moving the brake band into contact with the brake plate to stop rotation of the carrier ring.
Claims20
A tong for use at a wellbore, comprising:
- a tong body;
- at least one door pivotally coupled to the tong body and movable between an open position and a closed position;
- a carrier ring rotatable relative to the tong body;
- a brake plate coupled to the carrier ring;
- a brake band configured to move with the at least one door between the open and closed positions;
- and
- a braking member for moving the brake band into contact with the brake plate to stop rotation of the carrier ring.
A tong for use at a wellbore, comprising:
- a tong body;
- at least one door pivotally coupled to the tong body and movable between an open position and a closed position;
- a gripping assembly rotatable relative to the tong body;
- a brake plate coupled to the gripping assembly;
- a brake band configured to move with the at least one door between the open and closed positions;
- and
- a braking member for moving the brake band into contact with the brake plate to stop rotation of the gripping assembly.
A method of operating a tong, comprising:
- opening a door of the tong, wherein the tong includes:
- a tong body;
- the door pivotally coupled to the tong body;
- a carrier ring rotatable relative to the tong body;
- a brake plate coupled to the carrier ring;
- and
- a brake band having a door band portion attached to the door;
- moving the door band portion of the brake band with the door as the door opens;
- closing the door;
- moving the brake band into contact with the carrier ring, thereby preventing rotation of the carrier ring;
- and
- rotating a gear ring relative to the carrier ring.
Dependencies are inferred from the claim text.