Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 6851990 | Method and device for low-noise underwater propulsion A method and apparatus is disclosed for producing propulsion underwater with minimal acoustical emission. In basic concept, the method comprises the expulsion and sucking of liquid into and out of a liquid port of a watercraft in a manner generating compression and ... | 02/08/2005 |
| 4954106 | Aquatic sports device An aquatic sports device which includes a buoyant body and a water injection device. The water injection device includes a tank, a piston, and a spring. In operation, the user's weight drives the piston downwardly. This causes water to spray out from the ... | 09/04/1990 |
| 4565530 | Reciprocating marine propulsion engine A reciprocating marine propulsion engine is disclosed which includes a hollow, propulsion cylinder with a cylindrical axis, an intake end for admitting ambient water and an opposed discharge end for discharging water. A reciprocating shaft coaxial with th... | 01/21/1986 |
| 4481002 | Boat powered by sea waves A boat having an external float pivotally fixed to the boat. Through linkage, the motion of the float relative to the boat resulting from wave motion drives a dual cylinder pump. The pump admits water from the body of water in which the boat is suspended ... | 11/06/1984 |
| 4158245 | Swimming device A swimming device has a body platform with straps for the arms and body of a swimmer. Cylinders extend longitudinally on the platform and are open at their forward ends and have restricted outlet nozzles in the rear. Pistons are slidably mounted in the cy... | 06/19/1979 |
