Power plants – Pressure fluid source and motor – Coaxial impeller and turbine unit
Patent
1977-03-17
1978-02-14
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Coaxial impeller and turbine unit
60364, F16D 3300
Patent
active
040731391
ABSTRACT:
A hydrodynamic coupling wherein the radially outermost region of the working circuit communicates with one or more radially inwardly extending channels defined by a casing which surrounds the impeller or runner element or by the casing and one of these elements. The casing has one or more openings located radially inwardly of the normal liquid level in the working circuit and in the channel or channels. These openings discharge working fluid which flows in the channel or channels radially inwardly in response to abrupt rise of fluid pressure in the working circuit as a result of abrupt change in RPM, particularly sudden acceleration of the impeller element. The outflowing fluid reduces the magnitude of transmitted torque, and the upper limit of such torque is determined by the distance between the radially outermost portion(s) of the opening(s) and the common axis of the impeller and runner elements.
REFERENCES:
patent: 2301645 (1942-11-01), Sinclair
patent: 2875581 (1959-03-01), Kugel
patent: 3178889 (1965-04-01), Nelden
Armasow Waldemar
Lindenthal Hans
Geoghegan Edgar W.
Kontler Peter K.
Voith Getriebe KG
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