Water scooter has drive on bow side with two motor-driven paddle wheels and buoyant chassis, where chassis surrounds athletes from all sides in such a way that head of athlete always remains in swimming position in water scooter
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Water sports vehicle comprises buoyant biplane wing structure surrounding athletes, which is adjusted in its position for oncoming wind from athlete, where athlete is fixed to end of rigid tubular structure by padded holding system
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Sports vehicle has engine, where engine rotates drive wheel for generating driving speed, and drive wheel is rolling on track, where controlling and balancing of sports vehicle take place by wings exposed to airflow
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Sliding/rolling sledge for use by sportsman, has support construction possessing blade system, whose angle of incidence to airflow on sportsman is changeable, where blade system is folded upward into vertical in support mechanism
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Sports equipment for conveying sensation of bird flight to sports man, has main rail with vertical drive wing subject to wind for drive and auxiliary rail coupled by auxiliary joint, where rail carries wing i.e. horizontal wing
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Wing plank for sailing boat, has convex curve intermediate section arranged between side curve sections projecting towards water, and main body with varying cross-section profile and predetermined static lift buoyancy
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Flying device for sporting purposes has weight compensating mechanism which keeps craft airborne in space and movement in space is effected by wings exposed to wind and controlled by flyer
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Regrind machine for damaged or worn spindles
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Sealing lip for a centreboard case
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Machine acting as springboard for athletes
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Fixture for milling edged weapons - has frame which is positioned on milling machine bed with aid of cylindrical locating pins
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Generating milling cutter for composite materials
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Rudder propulsion for a watercraft
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Luff stretcher for a sailboard
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Spring mechanism for tensile and compressive forces
