Internal-combustion engines – Valve – Rotary
Reexamination Certificate
2002-02-27
2003-07-22
Yuen, Henry C. (Department: 3747)
Internal-combustion engines
Valve
Rotary
Reexamination Certificate
active
06595177
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to the porting of gases in and out of an internal combustion engine, and more particularly to a rotary valve system enabled for efficient gas flow, throttling of gas flow, improved mixing of gas flow and timing of gas flow.
2. Description of Related Art
The following art defines the present state of this field:
Ferrer Beltran, U.S. Des. 289,915 describes a rotary valve shaft design.
Calkins et al., U.S. Pat. No. 1,097,166 describes the combination of the cylinder and the rotating cylindrical valve at the outer end thereof, of a sectional bearing chamber for the valve, one of the sections of the chamber being connected to the cylinder, and the other section being movable toward and from the first-named section, means in connection with the engine for transmitting the pressure from the combustion chamber of the cylinder to the movable bearing section to cause the pressure exerted by the said section on the valve to vary with the variations of pressure in the combustion chamber, springs normally pressing the movable section toward the fixed section, means for varying the, tension the valve and the bearing chamber, the said lining consisting of similar semi-cylindrical sections, each section having a radial dowel pin, one of the sections of the lining being arranged adjacent to each section of the bearing chamber, each of the said bearing chamber sections having an opening for receiving the dowel pin to fix the lining with respect to the bearing chamber section.
Brower, U.S. Pat. No. 1,171,834 describes the combination with a plurality of engine cylinders provided each with an intake port in the head thereof, of a relatively fixed supply tube extending through the heads of all the cylinders and provided with inlet ports registering with the intake ports of the individual cylinders, fuel supply connection to the opposite ends of the said supply tube, a rotary valve concentrically disposed with respect to the supply tube provided with valve ports therein to register with the inlet ports in the supply tube and the intake ports in the cylinders, and means for rotating the said valve in time with the functions of the different cylinders of the engine.
Hollmann, U.S. Pat. No. 1,213,873 describes a rotary sleeve valve having internal and external bearing surfaces and ports for the passage of gas, and having in its external face circumferential recesses made therein at points coincident with the ports respectively.
Wehr, U.S. Pat. No. 1,252,753 describes the combination with a valve-casing, of a rotary valve arranged therein, a lining for aid casing shiftably arranged in the latter and ahving a concave portion forming the seat for said valve and completely surrounding the latter, and means engaging said lining and said casing for causing a continuous contact between said seat and said valve.
Thayer, U.S. Pat. No. 1,299,264 describes the combination with the cylinder of an internal-combustion engine, of a valve-casing having a port communicating with said cylinder, a plurality of concentric rotary valve-members located in said casing and provided with diametric ports adapted to register with each other and with said casing-port, and means intermittently moving said valve-members in the same direction but at different speeds respectively.
Fronk U.S. Pat. No. 1,360,107 describes a rotary valve mechanism for internal combustion engines, comprising a poart closing an end of the cylinder and provided with three ports, one in communication with the cylinder, the second constituting the exhaust port and the port Opening into the cylinder being in the same plane and disposed quartering and the intake port being in a different relative plane, and a rotary valve mounted in said part and having three ports in communication at their inner ends, two of the ports being in the same plane and set quartering and adapted to register with the exhaust port and the port opening into the cylinder formed in the part in which the valve is mounted and the third port being in a different relative plane and diametrically opposite on of the said two ports and adapted to register with the intake port only during each complete revolution of the valve.
Wallace, U.S. Pat. No. 1,386,477 describes the combination with an engine cylinder, of a valve mechanism comprising a casing with a curved seat and connected with the engine cylinder by a port, a pair of curved valves concentrically arranged in the said casing, the valves having oprts, means for moving the valves to cause their ports to register with teach other and with the port leading to the engine cylinder with a frequency required by the cycle on which the engine operates, and an adjustable curved valve mounted between the said movable valves and arranged to vary the effective size of the opening to the engine cylinder the latter valve being normally stationary and means for adjusting the said normally stationary valve.
Casna, U.S. Pat. No. 1,578,581 describes the combination with a cylinder having a piston therein and also having an inlet port, of a rotary tubular valve controlling said port, a tubular control member within said valve, a shaft extending axially of the valve and having a radial arm, a throttle member carried by said arm and engaging the inner wall of the control member, said control member being turnable about its axis and co-operating with the throttle member to vary the time of cut off.
Pope, Jr., U.S. Pat. No. 1,677,460 describes the combination of a cylinder having a combustion chamber, a rotary valve having a combustion chamber, a rotary valve having a port adapted to communicate with said combustion chamber during the intake and exhaust strokes of the engine, and a uniplanar sealing ring engaging said valve, the plane of said ring being at an angle with the cylinder axis and the ring being positioned to pass entirely below the valve port and to seal the valve port from the combustion chamber during the compression and firing strokes.
Danford, U.S. Pat. No. 1,702,816 describes a valve for use in multi-cylinder engines, a valve casing formed with an outlet opening leading to each cylinder and formed with a plurality of inlet openings, each inlet opening serving two outlet openings, and a valve mounted for rotation in the casing and formed with a pair of ports therethrough in each of two right angled diametric positions of the valve, the ports of each pair being in parallelism and inclined to the longitudinal and transverse axis of the valve, the respective ports of a pair cooperating with different inlets and different outlets of the valve casing at intervals indicated by a half revolution of the valve, the valves of one pair being arranged between the valves of the other pair and at directly opposite inclination to the valves of such other pair, each pair of ports opening through the surface of the valve in direct longitudinal alignment axially of the valve.
White, U.S. Pat. No. 1,740,758 describes a valve means for internal combustion engines comprising a valve chamber, a sleeve within said chamber but disposed with slight clearance therefrom, a stationary core member disposed with slight clearance within said sleeve, said sleeve and said core having staggered inlet and exhaust ports, packing rings arranged on said core member between adjacent inlet and exhaust ports, and trunnion means for supporting said sleeve independently of said core and said chamber.
Hansen, U.S. Pat. No. 1,890,326 describes the combination of a piston chamber, separate intake and exhaust valves therefor, each of said valves comprising a cylindrical casing having diametrically disposed port openings therethrough and communicating with said chamber, and comprising also a rotatable, hollow cylindrical valve member within said casing and having diametrically disposed openings there through for registry with said port openings, means of communication between the inside of each of said valve members and the outside of said casing for intake and exhaust, and means for rotating said valve me
Ali Hyder
Gene Scott-Patent Law & Venture Group
Kramer Jewelers, Inc. #2
Yuen Henry C.
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