Patents Assigned to Still Water Properties, N.V.
  • Patent number: 4101997
    Abstract: A water ski particularly adapted to function as the front ski of a twin ski, jet-driven water vehicle which is steered by turning of the front ski. Sections of the water ski define a planing surface and a pair of inclined, laterally spaced side surfaces extending downwardly and laterally of the planing surface. The portions of the side surfaces lying in or cut by a horizontal plane are equidistant from each other when the planing surface is upwardly tipped at a predetermined angle. At this angle the pair of juncture lines formed between the pair of inner surfaces and the planing surface are laterally divergent in a downstream direction when viewed from above. Reduced frontal drag results.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: July 25, 1978
    Assignee: Still Water Properties, N.V.
    Inventor: Nelson Tyler
  • Patent number: 3948206
    Abstract: A jet powered watercraft of motorcycle-like configuration. Longitudinally aligned front and rear skis are located in spaced relation below a hull and operate to hydrodynamically lift the watercraft to a cruise position by relative water flow upon the undersides of the skis. The rear ski and a jet pump are secured as an integral unit to an engine. The rear ski includes an opening through which water passes to the jet pump, and further includes channels on either side of the opening to collect and carry away entrained air. The engine is located in the hull and is cooled by water supplied by the jet pump which it drives. The front ski is rotatable for steering and is resiliently extensible for stability in turning. The center of buoyancy of the watercraft is above its center of gravity so that the craft is self-righting. The exhaust and cooling systems are arranged to eliminate flooding despite location of portions of the engine below water when the craft is at rest.
    Type: Grant
    Filed: September 6, 1974
    Date of Patent: April 6, 1976
    Assignee: Still Water Properties, N.V.
    Inventor: Nelson Tyler
  • Patent number: D242782
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: December 21, 1976
    Assignee: Still Water Properties, N.V.
    Inventor: Nelson Tyler