公开(公告)号：US09932827B2

公开(公告)日：2018-04-03

申请号：US14592981

申请日：2015-01-09

申请人： EATON CORPORATION

发明人： Jeffrey D. Skinner, Jr.

IPC分类号： F01B1/06 ,  F04B1/107 ,  F01B13/06

CPC分类号： F01B1/0631 ,  F01B13/065 ,  F04B1/107

摘要： A radial piston device includes a housing and a pintle fixed thereto that includes an inlet and an outlet, each aligned with a pintle axis. A rotor is rotatably disposed around the pintle and includes radially oriented cylinders. A piston is axially displaceable in each cylinder and includes a head defining a spherical contact surface. A thrust ring is rotatably disposed within the housing about the rotor and is in contact with each piston, such that a rotation of the rotor rotates the thrust ring. An inner surface of the thrust ring defines a toroidal contact surface. A contact location between the spherical contact surface and the toroidal contact surface varies as the rotor rotates about the pintle. A drive shaft is engaged with the rotor, such that a rotation of the rotor rotates the drive shaft.