Class 123/73V - Valves for crankcase

Subclass of Class 123 - Internal-combustion engines
No. of patents: 99
Last issue date: 02/23/2010

Number	Title	Issue Date
7665430	Stratified scavenging two-stoke cycle engine A stratified scavenging two-stroke cycle engine with the check valve for introducing scavenging air simplified in construction is provided. The gasket between the flange part forming an air supply chamber and a mixture passage at a side of the cylinder and the passa...	02/23/2010
7658170	Two-cycle engine A stratified scavenging two-cycle engine includes: an air passage for delivering pure air to a scavenging passage; an air valve for opening and closing the air passage; and an auxiliary air passage for delivering the pure air to the scavenging passage when the air v...	02/09/2010
7395790	Reed valve breather for evolution engine A reed valve assembly is provided with a body, at least one flexible member, and at least one rigid member. Preferably, the at least one flexible member has a periphery so as to substantially cover opening(s) in the body when positioned adjacent to the body, and the...	07/08/2008
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
7331324	Crankshaft rotary valve A crankshaft rotary valve that controls fluid flow between a port located circumferentially on the crankshaft and a crankcase chamber formed by a piston, cylinder, crankcase and crankshaft. As the crankshaft rotates, a channel in the crankshaft communicates with the...	02/19/2008
7210433	Stratified scavenged two-stroke engine A two-stroke internal combustion engine includes dual transfer passages in gaseous communication between a crankcase chamber and a combustion chamber of the engine, an air passage through the crankcase to the crankcase chamber and in gaseous communication with a car...	05/01/2007
7201189	Reed valve and reed valve assembly A reed valve having a plate shaped support substrate with a valve hole formed in a central section passing through in a plate thickness direction is provided. A flexible plate-shaped reed covering the valve hole at one surface of the support substrate and having one...	04/10/2007
7188622	Filtering face mask that has a resilient seal surface in its exhalation valve A filtering face mask 10 that has a mask body and a new exhalation valve 14. The mask body is adapted to fit at least over the nose and mouth of a person to help define an interior gas space when the mask is worn. The exhalation valve 14 permits...	03/13/2007
7076413	Simulation result displaying apparatus for a pneumatic device and record of displayed result A stroke time of a piston from excitation of a solenoid valve for driving the piston of a pneumatic cylinder to arrival at an end position thereof and a velocity of the piston at the arrival of the piston at the end position are determined by a simulation calculatin...	07/11/2006
7059344	Discharge valve mechanism for variable displacement compressor A discharge valve mechanism has a plurality of discharge openings. The discharge openings are placed in an open or closed state by a plate-like valve element. Each of the discharge openings is formed at a respective location between a base end side and a leading end...	06/13/2006
7047918	Reed valve for an internal combustion engine A reed valve for an internal combustion engine has petals which are curved, such that each petal has a concave surface that faces a concave surface of another petal. The curvature of the petals makes the petals more responsive to changes in pressure, thus enabling t...	05/23/2006
7028649	High flow reed valve assembly for a two-cycle engine A reed valve assembly in certain embodiments of the present teachings may include one or more of the following features: (a) a W shaped reed cage assembly having at least two reed cages, each reed cage having outer air ports and inner air ports wherein the inner air...	04/18/2006
6901892	Two stroke engine with rotatably modulated gas passage A two stroke internal combustion engine includes at least one gaseous communication passage between a crankcase chamber and a combustion chamber of the engine. A first rotary shut-off valve on a periphery of a rotatable circular disk is operatively disposed between ...	06/07/2005
6880577	Reed valve assembly The reed valve assembly of the present invention includes a reed cage, a retainer, and reed petals. The retainer is independently interlockable with the reed cage. As defined herein, independently interlockable is understood to mean that no additional parts are requ...	04/19/2005
6715455	Internal combustion engine An internal combustion engine with at least one control element for variation of the flow cross-section of a charge exchange passage, which control element is automatically adjustable in accordance with the engine mode by means of an actuating member and a connectin...	04/06/2004
6615774	Adjustable pressure actuated fuel/air diaphragm valve assembly A diaphragm valve assembly includes a diffusing screen, and a generally spherical lightweight membrane that provides a 360° circular seal. Spring loading enables variable resistance to be placed on the seal to allow the operator to adjust the internal pr...	09/09/2003
6609535	Reed valve and method of making same A reed valve includes a generally wedge shaped reed cage or block defining a fluid flow passage and having substantially coplanar discharge ports. A reed is mounted at a common hinge end to the reed cage and has a plurality of petals each of which overlie...	08/26/2003
6561143	Engine induction valve with reduced backflow This invention is an effective engine induction valve which provides a decrease in engine blowback while maintaining engine power. This valve uses a moveable member made from a heat-setting material, this member being bent into an elliptical curve when th...	05/13/2003
6513466	Two-stroke engine The invention relates to a two-stroke engine in the form of a drive motor in a motor-driven chain saw or like portable handheld work apparatus. A combustion chamber (4) is provided in a cylinder (2) of the engine and is delimited by a piston (1). The pist...	02/04/2003
6513464	Two cycle stratified charge gasoline engine The stratified two cycle engine comprises: a cylinder having an upper end and a lower end, a head at the upper end and fuel and air intake ports at the lower end; at least one spark plug mounted in the head; a sleeve in the cylinder having an upper end an...	02/04/2003
6422184	Method and apparatus for impulse charging of an internal combustion engine A method and apparatus are provided for impulse charging an internal combustion engine having at least one cylinder in which a piston moves in a stroke movement. The apparatus includes a selectively energizeable magnetic surface disposed in a charging duc...	07/23/2002
6382145	Reed valve cooling apparatus for engine A reed valve is fitted in an intake port member formed on a crankcase of an engine and the flange of the reed valve is placed between the respective joining surfaces of the intake port member and an intake manifold. A water jacket is formed in a circumfer...	05/07/2002
5921208	Thermodynamical aspiration valve An aspirating thermodynamic valve capable of controlling the flow of fuel mixture and air from the carburetor to the crankcase of a two-stroke engine includes a hollow body placed between the joint of the crankcase and the joint of the carburetor, along w...	07/13/1999
5921217	Two cycle engine provided with catalyst An internal combustion engine having at least one variable volume combustion chamber with an intake passage leading thereto, an ignition element for igniting an air/fuel mixture in the chamber, an exhaust passage leading therefrom and including a catalyst...	07/13/1999
5823150	Induction system for two cycle engine A number of embodiments of induction system arrangements for a two cycle crankcase compression internal combustion engine having reed valve assemblies comprised of a mounting portion that defines a flow passage and a first caging member that divides the f...	10/20/1998
5636658	High flow reed valve A high flow one-way or reed valve mechanism for use in the air/fuel supply system of an internal combustion engine. The reed valve comprising of a reed cage, reed cage ports, and reeds. The reed cage containing two converging main walls and two end walls....	06/10/1997
5623895	V-type, multi-cylinder, two-cycle engine An improved scavenging control system for a multi-cylinder, V-type, two-cycle crankcase compression internal combustion engine. In each embodiment, a scavenging manifold extends along one side of the crankcase chamber and communicates with the individual ...	04/29/1997
5613468	Fuel injection control A fuel injection system for an engine having a reed type valve in the induction system. The injection system is designed and controlled so that the fuel that is injected is injected substantially entirely before the reed type valve is closed. The time of ...	03/25/1997
5540196	Multi-cylinder internal combustion engine with lower cylinder communication A multi-cylinder internal combustion engine cylinder block is formed with communication ports allowing communication between cylinders that, when assembled with pistons and a crankshaft, are 180° out of phase. This allows the trapped mass of air beneath ...	07/30/1996
5521000	Polymer composite reed for a reed valve A polymer composite reed for a reed valve is provided, wherein the reed has improved mechanical properties as a result of its construction and is highly resistant to chemical and thermal attack. The improved mechanical properties of the reed are primarily...	05/28/1996
5390699	Reed valve assembly A reed valve assembly is mounted in a valve chamber formed in an intake passage of a crankcase of a two-stroke cycle engine and the reed valve assembly comprises a box-shaped valve body having a base end opened and secured to an intake pipe and a front en...	02/21/1995
5390633	Reed valve mechanism for reciprocating machine A number of embodiments of improved reed valve mechanisms for reciprocating machines wherein an arrangement is provided by employing a magnet releasably restraining the valve element in one of its positions so as to permit a stiffer valve to be employed w...	02/21/1995
5373867	Reed valve mechanism An improved reed valve mechanism having a cushioned reed valve seat is disclosed. The present invention provides a smooth resilient insert which is attached around ports in a reed cage and projects beyond the reed cage surface on which the reed valve memb...	12/20/1994
5370088	Two cycle engine An improved reed valve arrangement for a two cycle engine wherein in addition to the normal reed valve elements and stopper plates, there are provided rectifier plates that define a flow passage so as to direct the charge away from the walls of the engine...	12/06/1994
5351660	Electrically activated dynamic valve for spark ignition engines An inlet manifold active reed valve for an internal combustion spark ignition engine comprises a solenoid activated reed just upstream of the inlet poppet valve of a four stroke engine. For a two stroke engine the active reed valve is located at the entra...	10/04/1994
5291866	Pulse charger An apparatus for supercharging a four cycle internal combustion engine has at least one inlet reed or check valve and at least one outlet reed or check valve associated with each cylinder of the internal combustion engine. The crankcase of the engine is m...	03/08/1994
5273004	Two-stroke engine with rotary valves and uses of such an engine A two-stroke engine comprising at least one cylinder having a combustion chamber, an exhaust duct connected to the combustion chamber, at least one duct for the intake of fresh gas compressed by a compression device for delivering said fresh compressed ga...	12/28/1993
5257601	Adjustable rotary valve assembly for a combustion engine A rotary valve assembly is provided for use in a combination engine, wherein the valve assembly is adjustable for variable valve timing during engine operation. The rotary valve assembly comprises a rotary valve plate formed by a pair of valve leaves moun...	11/02/1993
5253614	Intake system for engine Several embodiments of engine intake systems that improve the charging efficiency by providing a closed branch passage which forms a volume in the intake tract between the throttle valve and the point of discharge into an engine chamber. The illustrated e...	10/19/1993
5251584	Two cycle engine Two embodiments of two cycle, crankcase compression engines wherein exhaust emissions are controlled by controlling the amount of scavenging air flow at low and mid ranges. The scavenging air flow is controlled by balance passages that interconnect at lea...	10/12/1993

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Class 123/73V - Valves for crankcase