COUPLING Russian patent published in 2009 - IPC F16L37/14 

FIELD: mechanics.

SUBSTANCE: invention is referred to couplings. The coupling has housing and retaining part. The retaining unit elements are mounted on the coupling housing, the above mentioned elements interact with each other so that they prevent retaining part moving from extended position to a completely pushed-in position when the insertion piece is placed into the coupling housing incorrectly. The retaining item has legs which are designed so that when thrust collar of insertion piece are between the said legs, the retaining part elements do not interact with each other, and the said retaining part can be moved into completely push-in position and thrust collar of insertion piece is put behind the retaining section of retaining part.

EFFECT: possibility of reliable monitoring of coupling assembling avoiding incorrect actions.

2 cl, 4 dwg