Pumps – Motor driven – Fluid motor
Reexamination Certificate
2000-01-05
2001-09-04
Vrablik, John J. (Department: 3748)
Pumps
Motor driven
Fluid motor
C418S003000, C418S069000, C418S213000, C418S246000, C418S249000, C418S263000
Reexamination Certificate
active
06283728
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a rotary engine driven by gas pressure, and particularly to a smooth operating efficient rotary engine coupled to a compressor.
BACKGROUND OF THE INVENTION
There are many different types of rotary engines having relatively complex valves or gating mechanisms. Many of these rotary engines have rotating members that are eccentrically positioned on a shaft so as to form chambers within a housing. An example of such a rotary engine is disclosed in U.S. Pat. No. 5,247,916 entitled “Rotary Engine”, and issuing to Riney on Sep. 28, 1993. Other rotary engines may have a variety of valves which are mechanically complicated and difficult to control or time that may require periodic adjustment. For example, a rotary engine having a hinged valve arrangement is disclosed in U.S. Pat. No. 4,860,704 entitled “Hinge Valved Rotary Engine With Separate Compression And Expansion Sections” issuing to Slaughter on Aug. 29, 1989. Other rotary engines may have gate systems or valves that are partially external to the rotary engine, resulting in a relatively large rotary engine that is not compact or of convenient shape. For example, the rotary engine disclosed in U.S. Pat. No. 4,014,298 entitled “Concentric Rotary Engine” issuing to Schulz on Mar. 29, 1977. While these prior rotary engines are suitable for the applications for which they have been designed, they are often relatively complex and are not easily packaged or conducive to a compact design that can easily fit within a small space. Additionally, the relatively complicated gating or valve mechanisms often result in timing problems, jamming, or the necessity of frequent and inconvenient adjustments. Additionally, often it is not convenient to couple the output of the rotary engine to other devices so that other types of work may be performed with the rotational movement created by the rotary engine. Accordingly, there is a need for a rotary engine that is well balanced and runs smoothly, that needs little adjustment, and that can be placed in a compact space. There is also a need for a rotary engine that facilitates coupling to other devices for performing work.
SUMMARY OF THE INVENTION
The present invention is a rotary engine particularly adapted to include a plurality of rotary assemblies, with each rotary assembly having a chamber formed within a rotor housing with internal retractable cam activated radial gates. Each rotor assembly is coupled to a shaft to provide rotational work. A rotary compressor is coupled to the shaft of the rotary engine through a clutch which may be selectively engaged with the rotary compressor.
Accordingly, it is an object of the present invention to provide an efficient, smooth operating rotary engine that is operated by pressurized gas.
It is a further object of the present invention to combine a rotary engine with a rotary compressor.
It is an advantage of the present invention that it is well balanced and quiet running.
It is a further advantage of the present invention that it requires infrequent adjustments.
It is a feature of the present invention that the rotary engine has internal cam activated radial gating.
It is a feature of the present invention that a plurality of rotary engines may be coupled with a common shaft to a rotary compressor that is selectively engaged by a clutch.
These and other objects, advantages, and features will become readily apparent in view of the following detailed description.
REFERENCES:
patent: 440120 (1890-11-01), Forsythe
patent: 1038075 (1912-09-01), Berrenberg
patent: 2607298 (1952-08-01), Nicolas
patent: 3433169 (1969-03-01), Graetz
patent: 4014298 (1977-03-01), Schulz
patent: 4448161 (1984-05-01), Tseng
patent: 4620514 (1986-11-01), Tseng
patent: 4860704 (1989-08-01), Slaughter
patent: 5247916 (1993-09-01), Riney
patent: 5360319 (1994-11-01), Swain et al.
patent: 810898 (1951-08-01), None
patent: 0180690 (1986-05-01), None
Fattibene Arthur T.
Fattibene Paul A.
Fattibene & Fattibene
Vrablik John J.
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