Rotary expansible chamber devices – Rotating internal member rotates and oscillates or reciprocates
Patent
1975-11-18
1976-11-30
Croyle, Carlton R.
Rotary expansible chamber devices
Rotating internal member rotates and oscillates or reciprocates
F01C 300
Patent
active
039946401
ABSTRACT:
The engine includes a housing defining a spherical cavity therein. A cylindrical member, rotatably mounted within the cavity, is driven by a drive member movably mounted within the cylindrical member. The cylindrical member, the drive member and the internal wall of the cavity define an expansion-compression chamber. Steam intake and steam exhaust manifolds are provided in the housing at spaced positions adjacent the cavity. The cylindrical member is provided with a steam passage therein which, in at least one rotational position of the cylindrical member, operatively connects the expansion-compression chamber to the intake manifold and in at least one other rotational position thereof operatively connects the expansion-compression chamber to the exhaust manifold. An output shaft is rotatably mounted within the housing and connected to the cylindrical member to be driven thereby. A circular ring valve is interposed between the cylindrical member and the intake and exhaust manifolds, respectively, to vary the comparative durations of the intake to and exhaust from the expansion-compression chamber of the cylindrical member. A secondary exhaust route is provided comprising an internal exhaust chamber formed in the drive member which, by means of an exhaust port and a valve sleeve, is conditionally connectable to the expansion-compression chamber. The valve sleeve has a part engageable with the cylindrical member such that the sleeve is moved relative to the drive member to open and close the exhaust port as the drive member moves relative to the cylindrical member. The exhaust chamber of the drive member is connected to an exhaust conduit extending into the cavity and about which the drive member rotates. This secondary exhaust route eliminates back pressure when the ring valve is positioned for late steam cutoff.
REFERENCES:
patent: 1880131 (1932-09-01), Gray
patent: 2043544 (1936-06-01), Kempthorne
patent: 2069646 (1937-02-01), Cohen
patent: 3176667 (1965-04-01), Hammer
patent: 3549286 (1970-12-01), Moriarty
patent: 3934559 (1976-01-01), Cohen
Croyle Carlton R.
Koczo, Jr. Michael
Sphero International Co.
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