HINGE OF BOTTOM-HOLE MOTOR Russian patent published in 2011 - IPC E21B4/02 

Abstract RU 2416015 C1

FIELD: engines and pumps.

SUBSTANCE: hinge includes housing with longitudinal grooves, shaft with spherical support footstep and footstep bearing, restricting bushing keeping the shaft from falling out of housing, and load-carrying elements arranged between housing and shaft. Grooves in housing are made in the form of segmented linear or radial key slots, and load-carrying elements are made in the form of leaf washers or leaf washers at least with one convex spherical surface and blind or through hole in which elastomer spring can be installed.

EFFECT: high load-carrying capacity, long service life, repairability, and cheap manufacture.

5 cl, 3 dwg

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RU 2 416 015 C1

Authors

Polej Nikolaj Lejbovich

Dates

2011-04-10Published

2009-08-03Filed