SHOCK-ABSORBING HEEL WITH PNEUMATIC CYLINDER AND PLATE-LIKE SPRING Russian patent published in 2007 - IPC A43B21/28 

FIELD: shoe branch of light industry, in particular, manufacture of shoes with shock-absorbing heel, more particular, production of average-heel shoes for men and women.

SUBSTANCE: shoe has top, bottom, and heel provided with cavity (blind opening) in its body. Pneumatic cylinder formed within heel body, at its walking side, is filled with gas and provided with piston positioned inside it. Plate-like spring is disposed between piston of pneumatic cylinder and movable heelpiece. Stop ring in lower part of pneumatic cylinder is adapted for preventing piston from shifting during backward stroke, and valve in upper part of pneumatic cylinder is designed for preliminary pumping of gas into pneumatic cylinder cavity. Movable heelpiece disposed below plate-like spring contacts with support during walking. Piston and heelpiece are connected through lock connection for holding of piston-plate-like spring-movable heelpiece system in assembled state and for enabling relative vertical displacement thereof. Bottom part of movable heelpiece contacts through its mid surface to lower plate of plate-like spring. Internal protrusion of movable heelpiece contacts to inner cavity of piston over its side surface. There is vertical gap between internal protrusion of movable heelpiece and inner cavity of piston. Movable heelpiece contacts with its inner walls to outer side surface of heel body. On contacting of heel portion of foot with support, when shin and thigh bones are straightened, reaction force of rigid support is transmitted through movable heelpiece, plate-like spring, piston, and preliminarily compressed gas within pneumatic cylinder to foot heel portion to thereby shock-absorb user's body.

EFFECT: reduced reaction force of rigid support during the whole front push phase, and improved fitting of shock-absorber for user's weight and environmental temperature.

4 cl, 5 dwg, 1 tbl