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Submissive Revolving explosions that can be adapted to be used in Drive mechanisms with Kelly as superior
Submissive Revolving explosions that can be adapted to be used in Drive mechanisms with Kelly as superior
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机译:柔顺的旋转爆炸,可以与凯利(Kelly)一起用于驱动机构
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摘要
The Invention relates to an improved Rotary avoidance of explosions has a rotating Bearing installed inside an exterior Housing and which carries a set of annular Seals.Hydraulically and is activated by means of a Fluid flowing through Hydraulic Pumps through an exterior housing.
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