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 |
| 6637402 | Piston having combustion chamber defined in the crown A combustion chamber assembly (and a piston having the combustion chamber assembly) for use in a diesel engine, includes a combustion chamber being defined in a crown of a piston, the combustion chamber having a central axis, and having a center portion b... | 10/28/2003 |
| 5893708 | Rotating piston for ball and seat valve assembly and downhole pump utilizing said valve assembly Disclosed is an assembly for unseating a seated traveling valve ball, and pumps utilizing such an assembly. The assembly generally includes a tubular member having therein a piston with an actuator for engaging the ball. Mechanical advantage is provided e... | 04/13/1999 |
| 5660534 | Rotating plunger for sucker rod pump A downhole sucker rod pump especially well adapted for use in pumping thick oils and oils containing particles of sand or rock includes helical grooves or apertures for producing an intermittent unidirectional rotation of the plunger without appreciably r... | 08/26/1997 |
| 5038570 | Piston engine and cryo-cooler provided with such a piston engine A piston engine having a piston (13) journalled in radial direction with respect to the direction of movement. The rotation-free piston (13) is centered by means of two pairs of dynamic groove bearings (41,43), (47,49) with respect to a cylinder axis (39)... | 08/13/1991 |
| 4922764 | Constant pressure sample cylinder with spheroid mixer A constant pressure cylinder with a spheroid or ellipsoid mixer is disclosed herein. Improvements include a spheroid or ellipsoid mixing element for mixing the accumulated sample. The mixing element is free to move about the sample chamber but is consturc... | 05/08/1990 |
| 4919104 | Reciprocating machine The invention relates to reciprocating machines with pistons being lubricated by a gas film which is built-up by rotation of the piston in the cylinder, both piston and cylinder consisting preferably of ceramic materials. The invention relates furthermore... | 04/24/1990 |
| 4508065 | Piston cooling oil delivery tube assembly A piston cooling oil delivery tube assembly for an internal combustion engine for use in directing cooling oil from a manifold into the coolant opening of an associated piston is formed with a rigid bracket and nozzle assembly attachable to a cylinder lin... | 04/02/1985 |
| 4412418 | Hydrodynamic lubrication system for piston devices particularly Stirling engines An apparatus for effecting the lubrication of expansible chamber devices of the type having a cylinder with a piston reciprocating therein and having fluid flowing in and out of the chamber. The invention is particularly suitable for free piston Stirling ... | 11/01/1983 |
| 4330993 | Hydrodynamic lubrication system for piston devices particularly Stirling engines This invention relates to a free piston Stirling engine in which a structure for aiding in the lubrication of the engine is provided. The piston of the Stirling engine is provided with turbine surfaces, such as blades. Working fluid entering the cylinder ... | 05/25/1982 |
| 4209285 | Unitary pump packing A unitary packing especially suitable for use in pumps which transport liquids such as water-based solutions or suspensions includes a generally concave working face having an outer cylindrical annular flange, a generally convex opposed face preshaped for... | 06/24/1980 |
| 4206726 | Double orifice piston cooling nozzle for reciprocating engines A reciprocating engine including a block having at least one cylinder therein, a piston reciprocally received in the cylinder and having a crown, a depending skirt and a ring-receiving groove on the skirt near the crown. The piston has a central cavity te... | 06/10/1980 |
