Quotables
"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 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 |
| 7249556 | Compressor with fortified piston channel A compressor is disclosed generally comprising a cylinder head mounted to a cylinder block having a cooling chamber and a piston channel via a bolt. A piston is disposed in the piston channel and has a contact portion that contacts the channel wall, which is integra... | 07/31/2007 |
| 7240644 | Internal combustion engine with cylinder head having directed cooling An internal combustion engine cylinder head unit includes a number of gas flow ports extending upwardly from a fire deck. A common coolant passage extends between adjacent ones of the gas flow ports. A first coolant flow director includes a flow splitter extending d... | 07/10/2007 |
| 7086357 | Cylinder head with improved heat transfer and valve seat cooling An improvement to a diesel engine cylinder head disclosed in U.S. Pat. No. 4,860,700, wherein the improvement comprises any of: a by-pass opening formed in partition walls thereof; a spine density of less than about five spines per square inch; spacing an inner cham... | 08/08/2006 |
| 7069884 | Internal combustion engine An internal combustion engine is provided in which an exhaust port communicating with a combustion chamber formed in a cylinder head is formed from independent exhaust ports, which are positioned on the upstream side, and a grouped exhaust port, in which the plurali... | 07/04/2006 |
| 6990805 | Waste heat recovery device for internal combustion engine A waste heat recovering device for an internal combustion engine includes: an internal combustion engine; and an evaporator into which an exhaust gas of the internal combustion engine is introduced as a high temperature fluid. An exhaust gas inlet of the evaporator ... | 01/31/2006 |
| 5453573 | Engine cooling system During operation of an internal combustion engine, structures adjacent the piston top ring turn around position and the exhaust port are exposed to high temperatures. In order to improve cooling around these adjacent structures, the heat transfer coeffici... | 09/26/1995 |
| 5074256 | Lubricating system for a valve seat of an internal combustion engine A lubricating system for a valve seat of an internal combustion engine produces a lubricant oil film on the valve seat (7) of a seat ring (2) providing the valve seat. At least a part of the seat ring (2) providing the valve seat surface (7) is made of a ... | 12/24/1991 |
| 4941436 | Cooling system for I.C.E. valve seat inserts Valve seat inserts of a four-cycle internal-combustion engine are cooled by the lubricating oil of the oil circulating system. An oil duct extending in the camshaft housing is bored in such a manner that the lubricating oil flows from the oil duct into a ... | 07/17/1990 |
| 4860700 | Tangent flow cylinder head An internal combustion engine cylinder head includes a lower water jacket chamber with a plurality of angularly spaced exhaust passages extending therethrough. Partition webs connect each of the passage walls with the jacket periphery to separate the jack... | 08/29/1989 |
| 4774912 | Composite cylinder head of internal-combustion engine A composite cylinder head of an internal-combustion engine includes a bottom wall part to face the combustion chamber and a reinforcement part disposed on the side of the bottom wall part opposite to the combustion chamber and functioning as a back-up rei... | 10/04/1988 |
| 4686348 | Method for hardfacing valves A poppet-type valve having a circumferential seating face including an annular seating area extending between inner and outer radial limits, a circumferential groove formed in the seating face and hardfacing material in the groove, the groove extending ra... | 08/11/1987 |
| 4593655 | Valve seat ring cooling apparatus An apparatus for cooling valve seat rings which are arranged in a cylinder head of an internal-combustion engine, the valve seat rings being surrounded by annular ducts through which a cooling medium can flow. For the forced circulation of the cooling med... | 06/10/1986 |
| 4530323 | Cylinder head structure of engine A cylinder head to be mounted on a cylinder block for a multiple-cylinder in-line engine has an intake port and an exhaust port for each cylinder bore of the cylinder block, water jackets surrounding the intake ports and the exhaust ports, and a plurality... | 07/23/1985 |
| 4508066 | Ceramic head for internal combustion engine A head assembly is disclosed for an internal combustion engine. The assembly is comprised of a cast ceramic body with a coefficient of thermal expansion less than 1.0×10-6 in/in/°F. (lithium aluminum silicate) fitting over the cylinder block ... | 04/02/1985 |
| 4214560 | Cylinder head improvement, particularly for a diesel engine The invention concerns an improved cylinder head. The cylinder head is fixed to the engine block by means of two short bolts 13 and 14 and four long bolts 15 to 18, all arranged at the points of a regular hexagon. The inlet and exhaust manifolds 20 and 21 are ... | 07/29/1980 |
| 4200066 | Internal combustion piston engine The cage for the valve seat is provided with cooling ducts which are uniformly spaced about the cage. Alternating ducts are used as coolant supply ducts while the remaining ducts are used as exhaust ducts. The ducts are arranged to uniformly cool the cage... | 04/29/1980 |
| 4182282 | Mushroom valve housing with fluid coolant circulation for internal combustion engines The invention provides a mushroom valve housing comprising a cage (1) and a guide (2), Cage (1) comprises legs (3, 4, 5, 6) supporting a valve seat (7) containing an annular space (8). Guide (2) has an annular cavity (9) with two sections (9a, 9b) communi... | 01/08/1980 |
| 4147140 | Cylinder head cooling arrangement for internal combustion engines A structural unit for an internal combustion engine, including an engine region (for instance, a part of a cylinder head directly exposed to the cylinder firing zone) that requires direct cooling in use. Instead of applying the cooling to the region itsel... | 04/03/1979 |
| 4147149 | Exhaust valve for a reciprocating internal combustion engine The exhaust valve is provided with an air gap which extends axially of a sleeve-like member to which the hot exhaust gases from the combustion chamber passes. The air gap serves to impede heat exchange between the coolant which cools the valve seat surfac... | 04/03/1979 |
| 4079704 | Internal combustion engine An internal combustion engine has a cylinder head formed with a cooling liquid passageway and an air space. The cylinder head has a combustion chamber cooled by cooling liquid flowing through the passageway and an exhaust valve and exhaust port passage co... | 03/21/1978 |
| 4033303 | Engine exhaust valve cooling A cylinder head having an exhaust valve port comprising a throat defined by a wall of substantially circular cross section and a bevelled valve seat circumscribing the wall. The bevelled valve seat has an axially extending annular portion adapted to be en... | 07/05/1977 |
| 4023349 | Valve arrangements for reciprocating piston machines A pneumatically actuated valve for controlling the flow of fluid from an inlet passage to the cylinder of a reciprocating piston machine wherein the valve is opened by the fluid pressure in the cylinder as the piston approaches top dead center and closed ... | 05/17/1977 |
| 4006592 | Valve arrangements for reciprocating piston machines A valve arrangement for controlling the flow of fluid from an inlet passage to the cylinder of a reciprocating piston compressor wherein the valve is actuated to the open position by the pressure of the fluid compressed in the cylinder by planned early cl... | 02/08/1977 |
| 3989424 | Engine ports An improved ported mechanism such as an engine, compressor or the like. The mechanism includes a housing defining a chamber and a liner is disposed within the housing and supported thereby to define the chamber walls. Coolant passages extend between the h... | 11/02/1976 |
