FLIPPER FOR BREAST STROKE SWIMMING Russian patent published in 1998 - IPC

FIELD: sportive equipment. SUBSTANCE: flipper has rubber overshoe and blade connected with it. Blade is positioned in saggital plane and has sole part 2, front shin part 3 and rear shin part 4. Blade parts 3 and 4 is made trapezium-shaped with wider end directed toward rubber overshoe. All parts of blade may be made detachable. Signalling lobes 5 and 7 are disposed on rigidity ribs 6 and 8 of shin facing parts 3 and 4. Lobes are adapted for engagement with user's shin and buttocks to provide self-checking and correct accomplishment of swimming technique. EFFECT: increased efficiency and simplified construction. 3 cl, 5 dwg