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 |
| 7438028 | Four stroke engine with a fuel saving sleeve A four stroke engine with piston strokes all of equal length whereby the intake stroke displacement and the compression stroke displacement are smaller than the expansion stroke displacement and the exhaust stroke displacement. This is accomplished using the fuel sa... | 10/21/2008 |
| 7318397 | High efficiency high power internal combustion engine operating in a high compression conversion exchange cycle A piston (10), a spring (15) operatively coupled to a piston, the spring being inside (21) or outside (41) the piston, and if the spring is inside the piston, the diameter of the spring is equal to 0.7 to 0.9, and if it is outside of the ... | 01/15/2008 |
| 7278383 | Internal combustion engine with variable compression ratio and valve characteristics When controlling the valve characteristics of an intake valve and changing the compression ratio, an upper variation limit compression ratio, which is the upper limit of the variation of compression ratio, is determined according to the actual valve characteristics ... | 10/09/2007 |
| 7270092 | Variable displacement/compression engine An internal combustion engine with improved efficiency provides continuous variable displacement and/or compression ratio tuning to one of a number of fuel types to be used by the engine. By varying displacement without changing the compression ratio, the engine can... | 09/18/2007 |
| 7210446 | V-twin configuration having rotary mechanical field assembly An engine having a rotary member and a first linear member includes a first axis about which the rotary member rotates and a second axis coupling the rotary member to an offset rotary element. The first linear member is coupled to the offset rotary element by a firs... | 05/01/2007 |
| 7194987 | Internal combustion engine driven with change-over of compression ratio, air-fuel ratio, and boost status With an increase in torque demand, the internal combustion engine of the invention successively changes over a combination of a compression ratio, an air-fuel ratio, and a boost status of an air-fuel mixture from (1) settings of a high compression ratio, a lean air-... | 03/27/2007 |
| 7188598 | Rotary mechanical field assembly An engine having a rotary member and a linear member includes a first axis about which the rotary member rotates and a second axis coupling the rotary member to an offset rotary element. The linear member is coupled to the offset rotary element by a first coupling f... | 03/13/2007 |
| 6994354 | Vibrationally decoupling gasket A gasket includes a fist sealing portion, a second sealing portion, and an elastic arm sealingly connecting between the two. The first sealing portion sealingly engages a first member and the second sealing portion sealingly engages a second member. The elastic arm ... | 02/07/2006 |
| 6925972 | Internal combustion engine driven with change-over of compression ratio, air-fuel ratio, and boost status With an increase in torque demand, the internal combustion engine of the invention successively changes over a combination of a compression ratio, an air-fuel ratio, and a boost status of an air-fuel mixture from (1) settings of a high compression ratio, a lean air-... | 08/09/2005 |
| 6880499 | Device for displacing the cylinder block and cylinder head with respect to the crankcase A device for displacing a cylinder block and cylinder head vs a crankcase. The cylinder block contains cylinders having an axis. In this case, the device comprises a plurality of bearing bridges extending across the cylinder block between the cylinders in a substant... | 04/19/2005 |
| 6789515 | Method and device for modifying the compression rate to optimize operating conditions of reciprocating piston engines The invention relates to the modification of the compression ratio using technologies similar to traditional engine parts. Turbines (26) and (81) set up to act in the reverse direction drive a screw (32) and shift the pivot (29) wh... | 09/14/2004 |
| 6550441 | Arrangement for preventing bearing-related noise in internal combustion engines Internal combustion engine with variable compression, comprising a crankshaft-bearing crankcase part and a cylinder-receiving part arranged tiltably thereon by means of a tilt axle bearing on one side of the engine and a tilt mechanism on the other, oppos... | 04/22/2003 |
| 5934228 | Adjustable combustion chamber internal combustion engine A two stroke engine having a variable compression ratio combustion chamber wherein the size of the combustion chamber is changed by threading a closure into or out of the combustion chamber. The combustion chamber is defined by the inside surface of a sle... | 08/10/1999 |
| 5904044 | Fluid expander The fluid expander includes a housing, a drive shaft mounted for rotation within the housing, a piston-cylinder assembly including a cylinder and a piston disposed within the cylinder for converting energy from a working fluid to rotational energy output ... | 05/18/1999 |
| 5611301 | Structural enclosure of combustion engines for the purpose of reducing engine noise The invention relates to an engine with a constructional design and material composition for optimum thermal conductivity and vibration damping functions. The invention consists in the cylinder section (11) surrounding the combustion chamber being made of... | 03/18/1997 |
| 5605120 | Method and a device for changing the compression ratio in an internal combustion engine A process and apparatus for setting the compression ratio of an internal combustion engine by changing the relative distance between the axis of rotation of the engine crankshaft and the engine cylinder head surface delimiting the end of each cylinder in ... | 02/25/1997 |
| 5562069 | Method and device for varying the compression of an internal combustion engine Method and adjusting device for varying the compression of an internal combustion engine with a cylinder receiving section (2) which is pivotably mounted in the crankcase section (4) of the engine supporting the crankshaft, about a tilting shaft bearing (... | 10/08/1996 |
| 5329893 | Combustion engine with variable compression ratio An internal combustion engine (10) is designed with a cylinder section (11) which is pivoted on a crankcase section (13) to provide different compression ratios. The crankcase section (13) is provided with raised lateral walls (21, 22, 24, 25) with upper ... | 07/19/1994 |
| 5197432 | Method of obtaining a longer stroke on an existing engine Engines are needed to perform a variety of functions in a variety of horsepowers. The subject method of obtaining a longer stroke on an existing engine makes it possible to increase the horsepower capabilities without replacing or modifying the cylinder b... | 03/30/1993 |
| 4873947 | Variable compression ratio direct injection engine A variable compression ratio, direct injection engine. A rotatable collar in operative engagement with a cylinder liner holder assembly is utilized to raise and lower the cylinder liner relative to the crankshaft, thereby varying the compression ratio. A ... | 10/17/1989 |
| 4174683 | High efficiency variable expansion ratio engine A variable expansion ratio internal combustion engine equipped with throttleless induction control and intake valve mechanism operable to induct an ambient pressure charge varying with load demand. Maximum compression pressure is preferably somewhat below... | 11/20/1979 |
| 4164916 | Variable displacement arrangement in four cycle, reciprocating, internal combustion engine Concentric outer and inner pistons are provided in each cylinder of a four cycle, reciprocating, internal combustion engine. A magnet restrains each outer piston against displacement by pressure of the fuel mixture in the cylinder, so that the outer pisto... | 08/21/1979 |
| 4148284 | Variable compression ratio engine A two-part variable compression ratio cylinder is provided having inner and outer sleeves wherein relative movement between the sleeves varies the volume of the combustion chamber and hence varies the compression ratio of the engine. Hydraulic means respo... | 04/10/1979 |
| 4144851 | Variable compression ratio engine A two-part variable compression ratio cylinder is provided having inner and outer sleeves wherein relative movement between the sleeves varies the volume of the combustion chamber and hence varies the compression ratio of the engine. Hydraulic means respo... | 03/20/1979 |
