| 摘要 |
A gear operated coupler is provided for coupling and uncoupling mating first and second coupling portions of a piping system component. A sleeve with an attached spur gear includes threads that engage the first coupling portion, and the sleeve slidingly receives the second coupling portion. The coupling portions are maintained in a metal-to-metal seal arrangement by a compensation ring in the sleeve. A pinion plate, carrying an associated pinion gear, is attached to the second coupling portion so that the pinion gear engages the spur gear. A torque applied to an operating nut connected to the pinion gear shaft causes the pinion gear and spur gear to rotate. Depending on the direction of rotation of the pinion gear, the threads of the sleeve advance the first coupling portion toward the second coupling portion until the two are coupled, or the first coupling portion is retracted from the second coupling portion.
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