Internal-combustion engines – Rotary – With compression – combustion – and expansion in a single...
Reexamination Certificate
1999-09-07
2001-07-10
Denion, Thomas (Department: 3748)
Internal-combustion engines
Rotary
With compression, combustion, and expansion in a single...
C418S035000, C418S036000
Reexamination Certificate
active
06257196
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates in general to the field of rotary engines and, more particularly, to a rotary internal combustion disk engine.
2. Description of the Related Art
Rotary engines were developed to address certain limitations inherent in conventional piston driven reciprocating engines. Specifically, conventional reciprocating engines utilize a plurality of pistons in combination with a multitude of other moving parts, such as connecting rods, crankshafts, camshafts, and intake and exhaust valves. Moreover, the relationship between these moving parts involves constant friction which causes the parts to wear over time and which causes a certain amount of vibration within the engine, thereby stressing all of the parts within and adjacent to the engine.
Over the years several different rotary engine designs have been developed. For instance, U.S. Pat. Nos. 3,282,258, 3,595,014, 4,127,367, and 4,666,379 disclose various rotary engine designs. Although somewhat useful for their intended purposes, none have proven to be entirely satisfactory. Specifically, these prior art engines involve complex configurations which are difficult and, consequently, expensive to manufacture. Additionally, these prior art rotary engines have been found to be inefficient and, consequently, produce insufficient power.
More recent rotary engine designs utilize internal combustion to improve on the insufficient power and inefficiencies of the early designs. For instance, U.S. Pat. Nos. 4,744,736, 5,400,754 and 5,484,272 disclose rotary internal combustion engines which were developed to address the problems associated with the early rotary engine designs. However, these prior art rotary engines still include some of the problems associated with the earlier designs and also have not proven to be entirely satisfactory.
Accordingly, there is still a need in the art for an efficient rotary internal combustion engine which produces sufficient power and which is based on a fairly simple construction which is reasonably inexpensive to manufacture. The present invention is particularly suited to overcome those problems which remain in the art in a manner not previously known.
SUMMARY OF THE INVENTION
The present invention is directed towards a new and improved rotary internal combustion engine comprising a generally cylindrical shaped rotor housing, a pair of cylindrical shaped rotary discs, a pair of substantially flat stators mounted over the open ends of the rotor housing and a fuel injection system. The rotary discs each include an inner concentric member, an outer concentric member and a plurality of spaced apart vanes connecting the inner and outer concentric members and extending axially outward from the inner end of the rotary disc. The rotary discs are structured for mating engagement with one another by inserting the vanes of each rotary disc into the chambers of the other rotary disc formed by the vanes and the inner and outer members, thereby forming an interlocked rotary disc assembly. The resultant rotary disc assembly is structured to rotate within the rotary housing. A plurality of spark plugs protrude through spaced apart mounting holes in one of the stators and into the combustion chambers. A plurality of spaced apart exhaust ports extend through the other stator. A hollow tubular member extends out from a centrally disposed bore in each rotary disc and free wheel embedded therein and through a centrally disposed free wheel in the corresponding stators to prevent backward rotation of the rotary discs. Two additional free wheels embedded in the rotary discs, are connected to a central shaft to produce a continuous rotation in a single direction. A gear wheel, structured to mesh with the gears of a starting motor, is mounted on the end of each tubular member. A single port injection system includes a centrally located throttle body structured to distribute the air-fuel mixture into the combustion chambers via intake runners and intake ports extending radially through the outer band of the rotor housing and corresponding intake ports in the outer concentric member of each rotary disc. The intake ports in the rotor housing and rotary discs are structured and disposed so that, as the rotary discs rotate within the rotor housing, the intake ports in the rotary discs are periodically aligned with the intake ports in the rotor housing, thereby allowing the combustible air-fuel mixture to flow through the intake ports and into the combustion chambers. A plurality of water jackets ports, structured to allow a cooling medium to flow therethrough, extend axially through the outer band of the rotor housing and the first and second stators. A plurality of pick-up coils and magnetic bolts are correspondingly mounted in the stators and rotary discs to trigger the spark plug firing as the rotary discs rotate.
It is an object of the present invention to provide a new and improved rotary internal combustion engine which has all the advantages of the prior art devices and none of the disadvantages.
It is another object of the present invention to provide such an engine which is more efficient than the prior art rotary engines.
It is also an object of the present invention to provide such an engine which produces improved power over the prior art rotary engines.
It is a further object of the present invention to provide such an engine which utilizes a fairly simple construction.
It is yet another object of the present invention to provide such an engine which is reasonably inexpensive to manufacture.
These and other objects and advantages of the present invention will become more readily apparent in the description which follows.
REFERENCES:
patent: 3256866 (1966-06-01), Bauer
patent: 3282258 (1966-11-01), Sinnott
patent: 3340815 (1967-09-01), Sinnot
patent: 3592571 (1971-07-01), Drury
patent: 3595014 (1971-07-01), McMaster
patent: 3744938 (1973-07-01), Matvey
patent: 3989012 (1976-11-01), Doundoulakis
patent: 4127367 (1978-11-01), Smith
patent: 4319551 (1982-03-01), Rubinshtein
patent: 4666379 (1987-05-01), Smith
patent: 4744736 (1988-05-01), Stauffer
patent: 5069604 (1991-12-01), Al-Sabih
patent: 5330333 (1994-07-01), Holmes
patent: 5400754 (1995-03-01), Blanco Palacios
patent: 5484272 (1996-01-01), Horn
patent: 5622149 (1997-04-01), Wittry
patent: 6036461 (2000-03-01), Bahniuk
patent: WO86/06786 (1986-11-01), None
Denion Thomas
Oltman Flynn & Kubler
Trieu Thai-Ba
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