SPACER WITH INCREASED HEAD PRESSURE Russian patent published in 2021 - IPC A01K73/45 

FIELD: machine building.

SUBSTANCE: spacer (3, 3') has at least one section (6, 7), each of which contains at least two wing-like profiles (10, 20, 30), when used representing front wing-like profile (10) and rear wing-like profile (20). Both wing-shaped profiles (10, 20) have front surface (10'', 20') and rear surface (10', 20''), each of which is formed by two edges and two side limiting elements (8, 14, 15), when used, respectively, front and rear edges and upper and lower side limiting elements. Between rear surface (10') of front wing-like profile (10) and front surface (20') of rear wing-like profile (20) there is channel (11, 11'), passing between two winglike profiles (10, 20). At distance from front edge on front surface (20') inside channel (11, 11') convexity (50) is made, occupying at least a greater part of the distance between the upper and lower side limiting elements (8, 14, 15).

EFFECT: invention provides increased spacer force without increasing traction force.

7 cl, 7 dwg, 1 tbl