Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A rotary valve including a casing with a cylinder port and a diametrically opposite exhaust port, a spherical rotor mounted to rotate within said casing and having a diametrically extending through passage extending at right angles to the axis of rotation of the rotor such as to align during rotation of the rotor, with said cylinder and exhaust ports, and further provided with two channels one on either side of said rotor and extending substantially parallel with said through passage, the said casing having an inlet port positioned, using the direction of rotation of the rotor as a datum, before said cylinder port, wherein the length of the said channels in said rotor is greater than the distance between the inlet port and the cylinder port, and at least one sealing ring positioned around the rotor between each channel and the through passage, with the plane of said sealing rings being substantially parallel to a plane including the axis of the through passage and the axis of rotation of the rotor.
Claim 2
Dependent Claim
171 words
A rotary valve including a casing with a cylinder port and a diametrically opposite exhaust port, a spherical rotor mounted to rotate within said casing and having a diametrically extending through passage extending at right angles to the axis of rotation of the rotor such as to align during rotation of the rotor, with said cylinder and exhaust ports, and further provided with two channels one on either side of said rotor and extending substantially parallel with said through passage, the said casing having an inlet port positioned, using the direction of rotation of the rotor as a datum, before said cylinder port, wherein the length of the said channels in said rotor is greater than the distance between the inlet port and the cylinder port, and at least one sealing ring positioned around the rotor between each channel and the through passage, with the plane of said sealing rings being substantially parallel to a plane including the axis of the through passage and the axis of rotation of the rotor.
Claim 3
Dependent Claim
63 words
A rotary valve as claimed in claim 1, wherein the outer dimension of the rotor is substantially less than the corresponding internal dimension of the casing, and said sealing rings are resilient sealing rings held within grooves in the surface of the rotor and biassed towards a position in running sealing engagement with the internal surface of the said cavity of said casing.
Claim 4
Dependent Claim
32 words
A rotary valve as claimed in claim 2, wherein the internal diameter of the or each sealing ring is greater than the root diameter of the groove in which it is held.
Claim 5
Dependent Claim
52 words
A rotary valve as claimed in claim 1 wherein said casing includes two substantially identical parts, which when combined produce a complete casing, each said part including an inner substantially half-spherical cavity with corresponding half-cylindrical recesses in the mating surfaces of the parts which on combination of the parts form said ports.
Claim 6
Dependent Claim
46 words
A rotary valve as claimed in claim 4 having a further port for receipt of an ignition device situated after said cylinder port, and wherein the distance between the cylinder port and the port for the ignition device is less than the length of said channels.
Claim 7
Dependent Claim
75 words
A rotary valve as claimed in claim 5 in combination with the cylinder of an internal combustion engine, a fuel/air mixture inlet system and an exhaust system, wherein said one of said diametrically opposed pOrts in said housing is in communication with an inlet to said cylinder, the other of said diametrically opposed ports is in communication with said exhaust system and said first further port is in communication with said fuel/air mixture inlet system.
Claim 8
Dependent Claim
25 words
The combination of claim 6, in combination with a multi-cylinder internal combustion engine, wherein there is one rotary valve for each cylinder of said engine.
Claim 9
Dependent Claim
27 words
The combination of claim 7, including a cylinder head mounted on the cylinder block, with a channel formed in said cylinder head for receiving said rotary valves.
Claim 10
Dependent Claim
63 words
The combination of claim 8 wherein said channel is formed by two side flanges each including passages therethrough which allow communication between an inlet manifold and said first further ports and further including a clamping plate attached to said flanges with a passage therethrough allowing communication between an exhaust manifold attached to said clamping plate, and the other of said diametrically opposed ports.