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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 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 |
| 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 |
| 7225767 | Conversion of an air-cooled engine to liquid cooling In some aspects of the invention the invention will relate to conversion of an existing VW air cooled engine to liquid cooling, and in still further aspects it will relate to the design of a water jacket to maximize heat rejection of a combustion chamber and piston ... | 06/05/2007 |
| 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 |
| 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 |
| 4972807 | Cylinder head cooling for multiple valve engine A cooling jacket arrangement for the cylinder head of a multiple valve internal combustion engine embodying a single camshaft for operating all of the valves. The cooling jacket is supplied with coolant in proximity to portions of the cylinder head that s... | 11/27/1990 |
| 4957068 | Liquid-cooled four-valve cylinder head for a multi-cylinder internal combustion engine A liquid-cooled, four-valve cylinder head for a multi-cylinder internal-combustion engine comprises a casting having a cooling-fluid space between the cylinder-head bottom and a cylinder-head cover in which supporting struts are arranged for reinforcing t... | 09/18/1990 |
| 4676202 | Engine cooling system A closed passage system surrounding an engine cylinder for cooling purposes. Fins extend longitudinally along the various passage sections to promote heat transfer into the air flowing through the passage. Fin density varies according to the heat load. Ne... | 06/30/1987 |
| 4471726 | Cylinder head for liquid-cooled multicylinder internal combustion engines A cylinder head for water-cooled multicylinder pressure die-cast formed internal combustion engines comprises series-arranged combustion chambers. A longitudinal duct is arranged at a spacing essentially above the combustion chambers, and niche-like water... | 09/18/1984 |
| 4455973 | Cylinder head for a water-cooled internal combustion engine A cylinder head, for a water cooled internal combustion engine, which reduces the thermal stresses. The gas-changing channels and the oil-return channels are located on one side. A main water overflow, in conjunction with an oppositely located auxiliary w... | 06/26/1984 |
| 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 |
| 4106444 | Individual cylinder head A liquid-cooled individual cylinder head for piston internal combustion engines with two inlet valves and two outlet valves arranged respectively adjacent one another, which consists of a cast upper part and of a double-walled bottom between the upper par... | 08/15/1978 |
| 4046114 | Insulated, high efficiency, low heat rejection, engine cylinder head A diesel engine cylinder head is provided with air gap inserts for insulating the combustion and exhaust gas exposed surfaces from the coolant jacket exposed walls so as to limit heat transfer to the engine coolant. Various insert elements are disclosed w... | 09/06/1977 |
| 4034723 | Insulated, high efficiency, low heat rejection, engine cylinder head A diesel engine cylinder head is provided with air gap inserts for insulating the combustion and exhaust gas exposed surfaces from the coolant jacket exposed walls so as to limit heat transfer to the engine coolant. Various insert elements are disclosed w... | 07/12/1977 |
| 4018195 | Insulated, high efficiency, low heat rejection, engine cylinder head A diesel engine cylinder head is provided with air gap inserts for insulating the combustion and exhaust gas exposed surfaces from the coolant jacket exposed walls so as to limit heat transfer to the engine coolant. Various insert elements are disclosed w... | 04/19/1977 |
| 4008695 | Cooled integral valve chest for an internal combustion engine and method for making same An integrally moulded overhead valve chest for an internal combustion engine, comprising a cage having several arms and formed with an annular valve seat cooling chamber and a valve stem guide formed with an annular guide cooling chamber which communicate... | 02/22/1977 |
