Patent Number: 6,250,977

Title: Compressed-air-powered immersible prime mover providing impulse propulsion to pool cleaners, trolling boats, and scuba divers

Abstract: An immersed prime mover device, typically of some few cubic inches or feet in volume, cyclically vents accumulated compressed air, typically 10-200 P.S.I. and more typically 90-110 P.S.I. derived from air compressors or from storage tanks, forcibly eject a slug of water, thereby producing a propulsive force. The accumulation may be some few cubic inches per minute in a large reservoir to but cyclically occasionally or infrequently eject the slug of water, producing an intermittent propulsive force. The accumulation may be of some substantial portion of the volume of an accumulation reservoir every few seconds, frequently cyclically ejecting the slug of water to produce a nearly continuous propulsive force. The device works by accumulating compressed air in two portions of a single chamber, one portion of which is periodically vented though a pressure relief valve to move a sliding assembly within the chamber which, when moved, lets all the compressed air stored within the other portion of the chamber egress the chamber through a pipe in which water is present, thus strongly directionally forcibly ejecting this water as a slug. The strong force periodically so produced is useful to propel a pool cleaner, various small boats especially for trolling during fishing, scuba apparatus, surfboards, aquatic maneuvering units and aquatic devices of diverse types. On land the periodically-ejected fluid may be used for a fountain, or a water cannon.

Inventors: Ness; Dwight (Northridge, CA)


International Classification: B63H 11/00 (20060101); B63H 11/12 (20060101); B63H 011/00 ()

Expiration Date: 06/26/2018