Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7334544 | Vehicle temperature control system A vehicle temperature control system comprising an internal combustion engine with an engine block and with a cylinder head, a heat source for heating a heat transfer medium, a heat exchanger arrangement for the transfer of heat transported in the heat transfer medi... | 02/26/2008 |
| 7070147 | Lubricating oil filling structure for an engine The lower end of a filler tube is attached to a service hole formed on a cylinder block in a horizontally opposed engine on a rear side of the engine, e.g., on side opposite from which an output shaft projects. The filler tube is provided with an elbow at the lower ... | 07/04/2006 |
| 7069977 | Heat exchanger Heat transfer members (H4, H3, H2, H1) are sequentially disposed within an exhaust port (18), within a pre-catalytic device (34), and on the downstream of a main catalytic device (35); the exhaust port (18), th... | 07/04/2006 |
| 6886504 | Engine of reciprocating piston type An engine of reciprocating piston type includes a cylinder block (4) with one or more cylinders (2), each of which receives a respective piston (10) and is defined by a respective cylinder barrel (8), which is integral with the reminder o... | 05/03/2005 |
| 6536382 | Radiator for inverted aircraft engine configuration An inverted aircraft internal combustion engine, such as a two-stroke compression-ignition (diesel) engine, incorporates a lubricant (oil) and/or coolant heat exchanger mounted upon the engine below an exposed crankshaft and/or enclosed crankshaft housing... | 03/25/2003 |
| 6419537 | Sound attenuator and temperature control device for an outboard motor A water reservoir is provided for use in conjunction with the engine of a marine propulsion system. The water reservoir is shaped to comprise two or more water containment cavities that can be located in positions which absorb heat from various heat produ... | 07/16/2002 |
| 6176205 | Pressurization of the engine cooling system The present invention provides an airtight reservoir in fluid communication with a cooling system of an internal combustion engine. This cooling system allows coolant to flow into the overflow bottle, thereby compressing air therein, and causing increases... | 01/23/2001 |
| 6082312 | Hand-guided appliance with an internal combustion engine with direct electronic injection In a manually operated machine such as a chain saw or the like, an internal combustion engine (10) located in a housing (17) and having an associated fuel injection mechanism (70) and an electro-mechanical module (80) is used to drive the machine. The eng... | 07/04/2000 |
| 5333575 | Internal combustion engine using lubricating oil for effective and uniform cooling An internal combustion engine which employs lubricating oil as part of the cooling system. A sleeve forms the cylinder wall and is completely surrounded by a jacket space formed by a wall exposed to the atmosphere, including air circulated by the engine's... | 08/02/1994 |
| 3983852 | Internal combustion engine disposition Internal combustion engine structure comprising a one-piece cylinder-block and crankcase casting with integral cylinder-head, of light alloy, and incorporating valve guides, induction ports, exhaust ports, spark plug wells, cooling-water chambers open at ... | 10/05/1976 |
| 3964263 | Six cycle combustion and fluid vaporization engine A reciprocating piston engine of the type including a piston reciprocal in a cylinder toward and away from an expansion chamber at one end of the cylinder and also provided with intake and exhaust valves openable and closable in timed sequence with recipr... | 06/22/1976 |
