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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7441530 | Optimal heat engine A conservative force coupled to the piston of a reciprocating-piston engine, refrigerator, or compressor acts to counter the pressure force on the piston that arises from the change of volume of the working substance accompanying a change in the piston position. As ... | 10/28/2008 |
| 7430995 | Constant optimum total compression: real-time manipulation of combustion chamber volume as a means of optimizing compression in internal combustion engines In conventional engines, the compression ratio is a constant. Therefore, cylinder pressure increases proportionately with intake manifold pressure. As manifold pressure changes dramatically according to load, a conventional engine cannot maintain anywhere near const... | 10/07/2008 |
| 7428886 | Two-cycle engine and compressor An oscillating lever arm engine includes rigidly connected opposing pistons moved by a single lever connected to a rotating crankshaft. When applied to a two-cycle internal combustion engine, one piston may function as a pump piston and the second piston as a workin... | 09/30/2008 |
| 7412955 | Engine component part and method for producing the same An engine component is composed of an aluminum alloy containing silicon, and includes a plurality of primary-crystal silicon grains located on a slide surface. The plurality of primary-crystal silicon grains have an average crystal grain size of no less than about 1... | 08/19/2008 |
| 7412972 | Dispersion-type suppressor for acoustic noise reduction of a gaseous fuel injector A CNG fuel injector for a fuel system of an internal combustion engine. The fuel system includes a fuel rail and an engine manifold. The fuel injector includes a fuel inlet for fluid communication with the fuel rail, a fuel outlet having an orifice disposed along a ... | 08/19/2008 |
| 7409927 | Method and device for cooling an internal combustion engine The invention relates to a method and a device for cooling an internal combustion engine. An aqueous, non-ionic coolant composition is used in a cooling circuit (14) of the internal combustion engine (11). In order to also ensure long-lasting protectio... | 08/12/2008 |
| 7409938 | Valve drive of an internal combustion engine comprising a cylinder head The invention relates to a valve drive of an internal combustion engine, comprising at least one camshaft whereon at least one cam carrier is arranged in a rotationally fixed and axially displaceable manner. Means for applying axial tension are formed between the at... | 08/12/2008 |
| 7406958 | Snow remover The snow remover has a cooling fan for directing cooling air to an engine, and an air cleaner. The air cleaner has an air intake for drawing in outside air. The cooling fan and the air intake of the air cleaner is housed within the engine cover. Cooling air is chang... | 08/05/2008 |
| 7404381 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, a radial impulse engine includes first and second movable V-members operably disposed between first and second end wall portions. The first V-member can hav... | 07/29/2008 |
| 7401592 | Hybrid exhaust valve assembly An exhaust valve assembly includes a flapper valve fixed to a valve shaft where the flapper valve is movable between a closed position, an intermediate position, and an open position. A resilient member biases the flapper valve toward the closed position. An electri... | 07/22/2008 |
| 7392768 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 07/01/2008 |
| 7373914 | Lubricating apparatus for internal combustion engine A lubricating apparatus for an internal combustion engine is provided in which an oil discharge passage, extending from the oil pump, is provided for straddling the oil pump case and the tank body. A direction of the extension of the oil discharge passage is changed... | 05/20/2008 |
| 7373912 | Oil level indicating system for internal combustion engine An oil level indicating system for an internal combustion engine includes an indicator passageway extending through a cylinder block, cylinder head and up through a ported boss extending through an upper engine cover. The ported boss is sealingly engaged with the cy... | 05/20/2008 |
| 7370624 | Piston engine with integrated balance shafts A piston engine with a compensation shaft unit, wherein a window surrounded by a flange is provided on the crankcase thereof. The flange forms a separating surface to which the housing of the compensation shaft unit is fixed by means of screws. In order to ensure cl... | 05/13/2008 |
| 7367293 | Four-stroke engine A four-stroke engine includes a cylinder block, a cylinder head mounted on the cylinder block, multiple cooling fins formed on the cylinder block and the cylinder head, a combustion chamber and an intake port and exhaust port formed in the cylinder head and in commu... | 05/06/2008 |
| 7367305 | Internal combustion engine and connecting rod therefor A connecting rod of an internal combustion engine, and an internal combustion engine including the connecting rod, a piston, a crankshaft and a float bearing as main moving parts. A piston is connected to a connecting rod by a spherical joint and has radial ribs on ... | 05/06/2008 |
| 7363905 | Procedure to operate a combustion engine in the event of damage and a device to perform the procedure Procedure to operate a combustion motor in the event of damage, whereby the thermoelectric voltage of a lubricant interruption on parts moving relative to each other and made of different, electrically conducting materials, is used to initiate an alarm signal, in th... | 04/29/2008 |
| 7360513 | Internal combustion engine that uses a variable compression ratio device A variable compression ratio mechanism that changes the compression ratio according to the rotation angle of a control shaft, wherein a stopper is provided at the highest compression ratio side for regulating the rotation of the control shaft. Then, the output detec... | 04/22/2008 |
| 7360519 | Engine intake manifold assembly An engine intake manifold assembly including a first portion configured with a first material and a second portion configured with a second material, wherein the first and second portions are adhesively bonded together. Preferably, the intake manifold assembly is ad... | 04/22/2008 |
| 7360512 | Low-thermal-inertia intake ports for port-injected, spark ignition engines and an associated manufacturing method The present invention provides an intake port design that provides a low thermal inertia characteristic, thereby decoupling the surface temperature of the intake port walls from that of the coolant through use of an air gap formed between the intake port and the cyl... | 04/22/2008 |
| 7360510 | Engine piston cooling system A cooling system comprises at least one common feed manifold carrying a series of nozzles and forming a mechanically rigid assembly, with fixing means for fixing in the engine and with hydraulic connection means for making a hydraulic connection to a feed circuit in... | 04/22/2008 |
| 7350482 | Oxygen producing non-polluting engine A non-polluting engine that produces mechanical, rotary motion, and produces oxygen as a principle gaseous byproduct. The engine employs a fuel mixture that includes two components that together produce oxygen. The fuel mixture is introduced to a combustion chamber ... | 04/01/2008 |
| 7350484 | Controlled leakage valve for piston cooling nozzle Device to feed cooling and lubricating fluid to cooling and lubricating nozzles for the pistons of an internal combustion engine, having at least one valve with an upstream channel and a downstream channel, said valve having a blocking element able to move in a comp... | 04/01/2008 |
| 7347176 | Gasket with leak conduit A gasket (200) includes a metal substrate (202) that has a first opening (204) and a second opening (216) formed therein. A first sealing bead (208) substantially surrounds the first opening (204). A second sealing bead (... | 03/25/2008 |
| 7334560 | Accessory drive unit The accessory drive unit, mounted intermediate an engine and a transmission, provides mounts for a water pump, an alternator, a supercharger and a starter. The accessory drive unit includes a main planetary gear driving a supplemental gear which is rotatably interco... | 02/26/2008 |
| 7331315 | Two-stroke engine with fuel injection A two-stroke internal combustion engine is provided with a fuel injector. The two-stroke internal combustion engine may have at least one transfer passage, an air channel, and a fuel injector. The transfer passage is between a crankcase and a combustion chamber of t... | 02/19/2008 |
| 7328679 | Valve guide structure A valve guide structure is provided which can suppress deterioration of a valve guide even if radial stress is applied on an upper portion of a stem of a valve. The valve guide structure is such that the stem 2 of the valve 1 is supported by an ... | 02/12/2008 |
| 7328681 | V-roller bearing and engine A bearing has an inner race that has separable inner sections. The inner race has an inner male protrusion and an inner female receptacle, and each inner male protrusion is mated with one of the inner female receptacles to form a unitary inner race. The bearing furt... | 02/12/2008 |
| 7328672 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 02/12/2008 |
| 7325538 | Versatile vortex air generator and method of installation An easily installed versatile trimmable fit-to-size vortex airflow generator for use in internal combustion engines to enhance fuel efficiency is provided. The multi-impeller vortex generator comprises a plurality of blades evenly spaced angularly on a central hub. ... | 02/05/2008 |
| 7325517 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 02/05/2008 |
| 7322345 | Stuck-open failure detection system for gas-fuel injection valve Disclosed is a stuck-open failure detection system for a gas-fuel injection valve adapted to inject or supply gas fuel into/to a combustion chamber of an engine, which comprises: a shutoff value interposed in a fuel supply passage fluidically connected to the gas-fu... | 01/29/2008 |
| 7322320 | Engine cylinder block A cylinder block including a block with two parts, a cylinder liner portion defining an inner wall of a water jacket and a cylinder block body defining an outer wall of the water jacket. The water jacket, which extends around the cylinders, is defined between the cy... | 01/29/2008 |
| 7320297 | Internal combustion engine There is provided an internal combustion engine that uses a blended fuel consisting of hydrocarbon and alcohol, and can efficiently operate relative to a wide range of required load. The internal combustion engine includes: intake ports 4a and 4... | 01/22/2008 |
| 7318395 | Internal combustion engine having a coolant circuit In an internal combustion engine having a coolant circuit which comprises a first coolant line for the cylinder block and a second coolant line for the cylinder head of the engine, with the cylinder head having at least one inlet valve and at least one outlet valve ... | 01/15/2008 |
| 7316221 | Valve system of V-type engine A valve system of a V-type engine in which a camshaft provided in each bank is formed with valve cams that open and close engine valves and a pump cam for driving a fuel pump, the phase of the pump cam relative to the valve cams is set such that the crank angle at w... | 01/08/2008 |
| 7314025 | Combustion powered fastener-driving tool with interconnected chambers A combustion tool has a housing with an air intake end and an opposite bumper end, a combustion-powered power source in the housing including a cylinder encircling a reciprocating piston associated with a driver blade, and having at least one air port located at the... | 01/01/2008 |
| 7311066 | Controlling exhaust temperatures An exhaust manifold cooling jacket has internal passages for the circulation of liquid coolant and encloses an exhaust manifold such that a gap is created between the exhaust manifold and cooling jacket. Flowing coolant through the jacket regulates outer jacket temp... | 12/25/2007 |
| 7305962 | Mounting structure for engine cover An engine cover mounting structure comprising an engine member and an engine cover, wherein a plurality of portions to be fixed to which fixing portions provided on the engine cover are mounted are provided so as to be situated below an upper surface of a cylinder h... | 12/11/2007 |
| 7305940 | Combustion-type power tool having ignition proof arrangement In the combustion-type power tool, a first shelter wall and a second shelter wall are disposed to partially surround an area between an ignition plug and an ignition ground. Two gaps are provided between the first and second shelter walls. The first shelter wall ext... | 12/11/2007 |
