MAKE-AND-BRAKE WRENCH FOR PIPES Russian patent published in 1997 - IPC

Abstract RU 2086399 C1

FIELD: oil industry. SUBSTANCE: lever 4 is articulated through axle 3 with make-and-brake wrench jaw 1. Round chuck 6 is articulated with handle 4 by means of axle 5. Chuck 6 is provided with eccentric holes for mounting the chuck on axle 3. The chuck is made up of two parts positioned on corresponding side of lever 4. Installed on jaw 1 are chucks 9 and 10. Spring 12 is placed between shank 2 of jaw 1 and lever 4. When an effort is applied to lever 4 the force is distributed evenly over three point s of pipe 13: chucks 9,10 and both parts of chuck 6 thus providing for gripping the pipe. EFFECT: enhanced reliability of wrench operation. 3 dwg

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RU 2 086 399 C1

Authors

Syntin E.P.

Khrolikov V.A.

Kolesnev S.V.

Dates

1997-08-10—Published

1994-05-31—Filed