FIELD: petroleum industry. SUBSTANCE: device contains hollow housing provided with operating handle and cutting tools mounted on yoke. The last is mounted on pump rod coaxially to it. The periphery of the hollow housing is made of ratchet wheel. The ratchet pawl is connected with the operating handle. Detachable expansion bushing made of collet is mounted between the pump rod and the hollow housing. The internal diameter of the hollow housing and the yoke are larger that diameter of connecting rod clutch. EFFECT: improved design. 2 dwg
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Authors
Dates
2001-10-20—Published
2000-01-11—Filed