초록 ▼

A hydrostatic machine including a casing 1 containing a rotary member 12 having radial cylinders 20 each with a piston 21 engaging a track ring 23. Both input 6 and output shafts 7 are connected either hydraulically through the transmission rotary members 12 or mechanically through a bypass shaft 10

A hydrostatic machine including a casing 1 containing a rotary member 12 having radial cylinders 20 each with a piston 21 engaging a track ring 23. Both input 6 and output shafts 7 are connected either hydraulically through the transmission rotary members 12 or mechanically through a bypass shaft 10 and clutch 50 for reducing machine heat losses. Hydraulic ram 106,110 assistance for cushioning out pressure transients when transmission power returns from mechanical to hydraulic. Internal oil ducts 72,80.90 included for providing further temperature control for the main internal transmission component parts 14.24 said ducts 72,80,90 feed from a auxiliary fluid pump 8,9.

대표청구항 ▼

A hydrostatic transmission comprising a casing; an internal transverse partitioning wall dividing said casing into first and second chambers; a pintle fixedly and non-rotatably mounted in said partitioning wall, said pintle having first and second ends extending into said first and second chambers,

A hydrostatic transmission comprising a casing; an internal transverse partitioning wall dividing said casing into first and second chambers; a pintle fixedly and non-rotatably mounted in said partitioning wall, said pintle having first and second ends extending into said first and second chambers, respectively, and including at least two internal longitudinal hydraulic fluid passages terminating in ports; a rotary cylinder member rotatably mounted on each of said first and second extending pintle ends, each said cylinder member comprising a plurality of radially arranged cylinders and a plurality of pistons disposed in said cylinders, said cylinders successively communicating with said ports during rotation of said cylinder members; an annular cam track surrounding each said cylinder member, said pistons operatively connected to said cam track; first and second rotary shafts rotatably mounted in said casing and extending into said first and second chambers, respectively, and means coupling said shafts to said cylinder members; a third rotary shaft rotatably mounted in said casing and mechanically coupled to said first rotary shaft, said third rotary shaft passing through said partitioning wall and engageable to said second rotary shaft by clutch means whereby said first and second rotary shafts are cooperatively engaged by said third rotary shaft when said clutch is engaged.