Rotary expansible chamber devices – Interengaging rotating members – Three or more
Patent
1985-10-01
1986-03-25
Smith, Leonard E.
Rotary expansible chamber devices
Interengaging rotating members
Three or more
F01C 108
Patent
active
045780200
ABSTRACT:
A hydraulic motor having variable speed and torque capabilities is comprised of a housing which provides a primary chamber and a plurality of secondary chambers spaced apart about the primary chamber and opening radially thereinto. A primary gear is supported for rotation in the primary chamber, and a secondary gear is supported for rotation in each of the secondary chambers and in meshing engagement with the primary gear. Each secondary chamber is provided with a pair of ports for connecting the chamber with a source of hydraulic fluid under pressure, whereby fluid flow across the secondary chamber rotates the secondary gear to impart rotation to the primary gear and an output shaft associated therewith. A hydraulic fluid flow control system provides for selectively controlling fluid flow to each of the secondary chambers, thus enabling driving of the primary gear and output shaft in opposite directions and with variable speed and variable torque characteristics in each direction.
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Obee Jane E.
Smith Leonard E.
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