BOLSTER DRAWBAR COUPLING-BOLT ROTARY GRIPPING ASSEMBLY Russian patent published in 2013 - IPC B62D53/12 

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to truck bolster. Bolster assembly comprises case, cup element, and one-piece coupling bolt. Case and cup allow rotary engagement of coupling bolt inside said case. Coupling bolt is fitted in its seat to turn relative to case and cup. In compliance with second version, assembly comprises elongated post element with outer surface, sleeve tubular element rotating about post element, and lock element. In compliance with third version, recess is made along bolt circle while coupler assembly comprises retainer including linearly adjustable clamp displacing between first and second position. In compliance with fourth version, assembly comprises elongated first element to turn in coupling bolt case and threaded hole extending in lengthwise direction, and elongated second element with neck section for connection with gripping assembly of bolster, and proximal threaded section. In compliance with fifth version, coupling bolt has cylindrical section, neck section, head section and annular section to be engaged with case or cup element.

EFFECT: rotation of coupling bolt independently of other elements.

25 cl, 38 dwg