Rotary expansible chamber devices – With plural working fluid inlet or outlet passages
Patent
1995-04-06
1996-09-24
Vrablik, John J.
Rotary expansible chamber devices
With plural working fluid inlet or outlet passages
418150, 418235, 418255, 418264, 60221, 417348, 440 38, 440 44, F01C 1344, B63H 1108, B63H 1110
Patent
active
055585094
ABSTRACT:
A sliding-blade water jet propulsion apparatus has an oval-shaped chamber and a water channel extending generally tangential to the chamber with a cylindrical rotor rotatably mounted eccentrically in the chamber. The rotor has at least two rectangular blades slidably mounted in slots extending through the cylindrical rotor in mutually perpendicular relation and each blade is independently movable relative to the other in a radial direction. Each blade has a guide element extending from opposed sides and through the opposed end walls of the rotor which are slidably received in guide grooves in the chamber end walls. The guide elements traveling in the guide grooves cause the blades to extend and retract radially with their outer ends following the inner periphery of the chamber side wall and a portion of the water channel with a constant clearance. In one embodiment, the rotor is rotated by a working gas entering the chamber and upon expansion effectuating gas pressure on one side of the blades which causes water in the water channel to be expelled by the opposite side of the blade without substantial mixing of the gas with the water, and as the rotor rotates more water is drawn into the water channel. In another embodiment, the rotor is rotated by an external power source connected to the shaft of the rotor rather than by a working gas.
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patent: 5144802 (1992-09-01), Ruzic
Jirnov Alexei
Jirnov Olga
Roddy Kenneth A.
Vrablik John J.
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