LIFTING CHAIN BLOCK Russian patent published in 2017 - IPC B66D3/16 

FIELD: transportation.

SUBSTANCE: lifting chain block, wherein the flywheel casing strength can be increased without increasing cost and without the need in separate reinforcing elements. Lifting chain block (10) is provided with a flywheel casing, which is secured to the frame element and which closes the flywheel for manual circuit having a wound on it hand chain (C2). The flywheel housing includes a terminal surface, a side surface and a female part. The termination surface comprises a projecting part in the shape of triangle corners. A plurality of fastening holes for fastening elements are arranged in the projecting part. The female part is formed continuously with the projecting part so that the tangent surfaces to the female part form a sharp angle. The female part extends over the side surface of the flywheel housing.

EFFECT: increased unit strength.

5 cl, 28 dwg