Marine propulsion – Helical screw
Patent
1992-07-27
1993-12-14
Sotelo, Jesus D.
Marine propulsion
Helical screw
114270, B63H 126
Patent
active
052697142
ABSTRACT:
A boat with a pair of air hose augers with a rubber ridge type surface and two wheels of a ridge surface or sled runners for holding a boat on the rails of a railroad track, the boat has a double snow plow blade for cleaning away the snow from streets, railroad tracks, etc., the air hose auger of six inches would handle a small boat easily.
REFERENCES:
patent: 568604 (1986-09-01), Duerr
patent: 1289808 (1918-12-01), Kennedy et al.
patent: 3906888 (1975-09-01), Justinien
patent: 4734067 (1988-03-01), Elias-Reyes
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