Internal-combustion engines – Oscillating piston – Toroidal cylinder
Patent
1992-12-07
1995-04-18
Kamen, Noah P.
Internal-combustion engines
Oscillating piston
Toroidal cylinder
F02B 5300
Patent
active
054069165
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to an oscillating piston machine, specifically adapted for use as an Internal Combustion Engine, preferably for two stroke operation, or alternatively, specifically adapted for use as a compressor, or alternatively as a pump, or alternatively as a fluid driven motor.
PRIOR ART
Embodiments and Shortcomings in Prior Art Absent from and Overcome by Present Invention
Patent Applications for oscillating piston machines for use as internal combustion engines, compressors, pumps and motors have been disclosed as early as 1903. Inspite of the numerous advantages claimed, to date none of these inventions have appeared on the market or have been known to be commercially successful, mainly because of the technical and feasibility shortcomings inherent in their embodiments, which are listed below: invention rectangular faced, arcuate pistons--easier to mass machine; moving links--present invention not cat and mouse, only three moving links; absent--sealing simple; weakest attachment face--present invention pistons supported by larger and stronger flat end face; cylinder--high inertia problems and thermal distortion--present invention, pistons end attached to oscillating disc--significantly low inertia and low thermal distortion; ratchets" for converting oscillating into rotary movement--expensive/unreliable--absent from present invention--overcome by simple robust three moving part beam and crank mechanism. all prior art comprise one or more of above listed embodiments.
SUMMARY OF THE INVENTION
An oscillating piston machine comprising arcuate, rectangular faced, oscillating pistons, attached to an oscillating disc supported by a flange, mounted in bearings on a long central inner shaft, fixed to a wall of a crankcase housing. The oscillating movement is converted into rotary movement by a single connecting rod linking a gudgeon pin on the flange to the crank pin of an output crankshaft and flywheel. The annular spaces swept by the oscillating pistons are enclosed by a fixed inner concentric cylinder, bolted to a stationary disc, bolted to an outer concentric cylinder, bolted to the crankcase housing. Similar arcuate stationary pistons are provided in the stationary disc, and ports are provided for intake and exit of fluid, and adapted for use, particularly as a two stroke internal combustion engine.
The construction is simple and inexpensive to mass produce and overcomes the feasibility problems of previous oscillating piston disclosures. The inherent benefits gained, constitute a quantum leap ahead of currently available Reciprocating piston engines, Compressors and Turboshaft engines, particularly in compactness, power to weight ratio, simplicity, parts count, materials, cost, maintenance, wear, friction, vibration, cooling, breathing, fuel efficiency and lower exhaust pollution.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a sectional view of a general arrangement of the invention, with the flywheel and crankcase housing on the left hand side.
FIG. 2 is an end view of a self charged version of the engine with the cover plate and stationary disc removed, to reveal the stationary and oscillating pistons and the location of the ports.
FIG. 3 is an end view of a self charged version of the engine with the stationary disc and cover plate assembled. It also illustrates a communal inlet pipe and a communal exhaust pipe. Also shown is an anti-vibration engine mounting and the location of auxiliaries including the starter motor and alternator.
FIG. 4 is a similar view to FIG. 3, for an externally charged version of the engine.
FIGS. 5a, 5b and 5c are three views of a typical oscillating flange.
FIG. 6 is a perspective exploded assembly view, illustrating the piston sealing blades, sealing blade helical and leaf springs, a cutaway view of a sealing blade channel, and an outside view of the blades assembled in a channel.
FIG. 7 is a close-up view of part of FIG. 1, showing additional features, such as cooling, sealing, and lubrication, too minute to see in FIG. 1.
FIG. 8 is a
REFERENCES:
patent: 1111605 (1914-09-01), Moss et al.
patent: 1294487 (1919-02-01), Laberge
patent: 2387467 (1945-10-01), Reiter
patent: 3665896 (1972-05-01), Crehore
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