TEETH OF INVOLUTE GEAR FOR FLUID MEDIUM DOSING UNIT Russian patent published in 2013 - IPC G01F3/10 G01F13/00 

FIELD: machine building.

SUBSTANCE: set of gears contains the first and the second gears identical to each other, designed with possibility of interaction at fixed distance between centres, so that the first and the second gears are engaged under all the angular positions, and each gear from the set of oval gears includes a sleeve containing an oval body with major axis and minor axis passing through the sleeve centre, and a wall profile for teeth flanks, which circumscribes major and minor axes, and a lot of gear teeth branching from the wall profile for teeth flanks. Each gear tooth has two contact surfaces with circular involute bent profiles; circular involute bent profiles of each tooth on the first gear are generated from the base circle with radius Rb1, made from modified elliptical pitch line of tooth with radius R1 of pitch line at angular position Θ from the centre. Modified elliptical pitch line of tooth is described by formula of polar coordinates developed in the invention formula.

EFFECT: improving behaviour, reducing wear of gears teeth and operation noise.

18 cl, 6 dwg