Rotary hydrostatic machines or transmissions
AssigneeUnipat AG
InventorsChristian H. Thoma, George D. Mc. Arnold, Arthur A. Blair
Life of this patent
Estimating the term…
Abstract
A hydrostatic machine includes a casing (10) containing a rotary member (12) having radial cylinders (24) each with a piston (25) engaging a track ring (27). The member (20) is coupled to an external shaft (13) via reduction gearing (43,44) which also acts as a gear pump. This can be used to supply external power take-off fluid circuits, or an attached oil filter (64) or internal bearings (47,57) or make-up fluid for the machine via valve (42).
Claims8
A hydrostatic machine including a casing, a rotary member for rotation within the casing and formed with generally radial cylinders each accommodating a piston connected to a slipper which engages a surrounding cam track as the member rotates, and including an external shaft, and transmission means including reduction gearing for coupling the rotary member to said external shaft, said reduction gearing comprising a relatively small diameter gear connected to said external shaft and a relatively large diameter gear connected to said rotary member, said reduction gear pair acting also as a fluid gear pump for supplying fluid under pressure.
Dependencies are inferred from the claim text.