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 |
| 7128028 | Water-cooled cylinder head for a multicylinder internal-combustion engine A water-cooled cylinder head for a multicylinder internal-combustion engine, has a cylinder head housing which has charge cycle ducts, passage bores for receiving cylinder head screws, valve stem guides for inlet and outlet valves controlling the charge cycle ducts,... | 10/31/2006 |
| 6401702 | Controlled two-stroke internal combustion engine A combustion chamber in a reciprocating-piston internal combustion engine having at least one inlet duct and at least one outlet duct is formed by a cylinder head and piston each having respective annular squish surfaces for acceleration of fresh gases. A... | 06/11/2002 |
| 6273043 | Mounting plate and rocker arm assembly A plate for mounting a rocker arm assembly on an internal combustion engine having hemispherical combustion chambers is disclosed. The plate has a lower surface which mounts to the head of the engine. First and second surface portions are arranged in para... | 08/14/2001 |
| 5826567 | Two-stroke internal combustion engine In a two-stroke internal combustion engine, total hydrocarbon (THC) exhaust is decreased as a result of small structural changes and without loss of output power. A Schnurle scavenging-type combustion chamber has a hemispherical main surface and an annula... | 10/27/1998 |
| 5076219 | Internal-combustion engine with rotary distribution A rotary bell (36) driven by a hollow shaft (42) and a pinion (46) selectively exposes intake and exhaust ports of the cylinder head (23). The bell (36) delimits a substantially hemispherical combustion chamber (26) and has a progression face (62) which p... | 12/31/1991 |
| 5007394 | Combustion chamber for compression ignition internal combustion engine A combustion chamber, designed for compression ignition internal combustion engines, solves the problem of distribution and whirling of fuel mixture in the combustion chamber of the engine and from this the resulting easier ignition of fuel mixture, optim... | 04/16/1991 |
| 4484550 | Internal combustion engine with at least one combustion chamber having four valves Internal combustion engine with at least one combustion chamber produced within a cylinder head or similar device, it being possible to feed a fuel-and-air mixture into said combustion chamber through two inlet valves arranged in the cylinder head and to ... | 11/27/1984 |
| 4333426 | Internal combustion engine construction An engine constructed with a hemispherically shaped combustion chamber having inlet and exhaust valves flush mounted in the surface of the chamber with centerlines perpendicular to the chamber surface and intersecting the cylinder bore centerline at a com... | 06/08/1982 |
| 4324214 | Combustion chamber for an internal combustion engine An internal combustion engine comprises a combustion chamber located between a spherical-cup bottom wall of the engine head and a crown top wall of the piston. The crown wall includes of five wall portions, of which first and second side portions are conv... | 04/13/1982 |
| 4142501 | Internal combustion engine having improved cylinder head configuration A cylinder head of an internal combustion engine is formed with concavity. Two flat protruded portions are formed on the spherical surface of the concavity and their planes intersect each other at a location slightly below the vertex of the spherical surf... | 03/06/1979 |
