E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/13
E21B 4/00 (2006.01) E21B 4/14 (2006.01)
Patent
CA 1163262
ABSTRACT OF THE DISCLOSURE A hinge joint of a bottom-hole helical planetary ma- chine, comprising two interconnected universal joints each of which incorporates a housing with a toothed ring made on the internal wall thereof, closed on opposite sides with caps two half-couplings coaxially disposed in the ho- using and provided with external toothed rings meshed with the toothed ring of the housing, and a ball disposed bet- ween the half-couplings, and two seals installed in the housing between the caps and appropriate faces of the ho- using toothed ring. Each seal is made of an elastic mate- rial in the form of a sleeve which embraces the half-coup- ling and has one end adapted to rest on the face of the housing toothed ring, while the other end is secured to the half-coupling.
384871
Baldenko Dmitry F.
Goldobin Vladimir B.
Gusman Moisei T.
Kochnev Anatoly M.
Nikomarov Samuil S.
Marks & Clerk
Vsesojuzny Nauchno-Issledovatelsky Institut Burovoi Tekhniki
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