Quotables
"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7950355 | Air-cooled engine having improved dust preventive structure An air-cooled engine is provided, in which a cooling fan assembly for inducing a stream of cooling air and a screen member for covering an axial end face of the cooling fan on a suction side are drivingly mounted on a rotary drive shaft of the engine. A fan casing c... | 05/31/2011 |
| 7341027 | Portable 4-cycle engine and portable machine equipped with the 4-cycle engine A portable 4-cycle engine with a configuration which allows cooling air to flow in the direction of the crankshaft relative to a cylinder head on a cylinder, and a portable machine equipped with this engine, are provided, respectively. In such an engine, the cylinde... | 03/11/2008 |
| 7255069 | Cylinder sleeve support for an internal combustion engine The disclosed multi-cylinder, poppet-valved engine, has replacement cylinder sleeves larger than the original sleeves, and laterally supported near their upper ends by an aluminum alloy plate having a continuous flange or boss projecting into the cylinder block. The... | 08/14/2007 |
| 7082900 | Outboard engine system In an outboard engine system, a first opening communicating with a cooling water discharge passage and a second opening communicating with a cooling water supply passage are formed adjacent to each other in an upper wall of a cooling water passage forming member. A ... | 08/01/2006 |
| 6070562 | Engine block for a multi-cylinder internal combustion engine A cylinder block for a multi-cylinder internal combustion engine with a multi-bearing crankshaft and a water jacket surrounding the cylinders. The outer wall of the water jacket extends downwards approximately into a parting plane of the crankshaft bearin... | 06/06/2000 |
| 5454426 | Thermal sweep insulation system for minimizing entropy increase of an associated adiabatic enthalpizer A method and apparatus are disclosed for minimizing the increase of entropy of an adiabatic enthalpizer by means of a thermal sweep insulation system which surrounds at least a portion of the adiabatic enthalpizer and through which the working fluid for t... | 10/03/1995 |
| 4926801 | Wet/dry cylinder liner for high output engines The cylinder liner of an internal combustion engine includes a wet-type upper portion and a dry-type lower portion. The interior wall of the cylinder and the corresponding lower portion of the liner are machined to have an interference fit under operating... | 05/22/1990 |
| 4873944 | Partially liquid-cooled type forced air-cooling system for internal combustion engine In a partially liquid-cooled type forced air-cooling system for an internal combustion engine which includes an air-cooled cylinder and a liquid-cooled cylinder head, a centrifugal cooling fan is provided in front of a crankcase so as to rotate about the ... | 10/17/1989 |
| 4773365 | Chain saw A chain saw has a body formed by an integral molding process and defining therein an internal combustion engine chamber for accommodating an internal combustion engine. The internal combustion engine is inserted into the internal combustion engine chamber... | 09/27/1988 |
| 4770130 | Chain saw A chain saw has an intermediate wall portion integrally formed with a body thereof for separating an internal combustion engine chamber from a carbureter chamber and a fuel tank chamber. The intermediate wall portion includes a double wall portion having ... | 09/13/1988 |
| 4765282 | Chain saw A chain saw has a first shutter provided between an air intake space formed on the side of a body and a heat insulation space formed between an internal combustion engine chamber and a carbureter chamber in such a manner as to be openable and closeable su... | 08/23/1988 |
| 4676202 | Engine cooling system A closed passage system surrounding an engine cylinder for cooling purposes. Fins extend longitudinally along the various passage sections to promote heat transfer into the air flowing through the passage. Fin density varies according to the heat load. Ne... | 06/30/1987 |
| 4587933 | Cylinder block for internal combustion engine A cylinder block for an internal combustion engine is provided which includes a plurality of relatively spaced free-standing cylinder tubes disposed within a cooling jacket formed in the block. The cylinder tubes are connectedly supported by, and extend u... | 05/13/1986 |
| 4573436 | Air cooled horizontal power piston engine This invention relates to an air cooled horizontal power piston engine and to an improvement for conventional water cooled horizontal power piston engines by which such water cooled engines may be modified for cooling by ambient air. An efficient air cool... | 03/04/1986 |
| 4562799 | Monolithic ceramic cylinder liner and method of making same A replaceable monolithic, hollow, generally cylindrical cylinder liner formed of hot pressed silicon nitride adapted for operating at the high engine temperatures caused by fuel combustion and friction within the liner without need for liquid cooling ther... | 01/07/1986 |
| 4480601 | Water-cooled two-stroke internal combustion engine A two cylinder engine has a reverse scavenging system with exhaust ports itioned on either front end of the cylinder block and directed towards areas without any ports which are located next to each other in the center of the engine. Intake ports are dir... | 11/06/1984 |
