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    52.
    发明专利
    未知

    公开(公告)号：DE69405460D1

    公开(公告)日：1997-10-16

    申请号：DE69405460

    申请日：1994-06-13

    Applicant: APPLIED POWER INC

    Inventor： DE JONG LEENDERT WILLEM CORNEL ,  VAN HEININGEN ARJAN PETER ,  MASSELING WILLEM HERMAN

    IPC: F04B1/04 ,  E04B1/04

    Abstract: A radial piston pump of the type, in which an excentric rotor (7) is adapted to cause the pistons (4) to perform a reciprocating movement within radial cylinders (3) in the pump body (1), the radial inner ends of the pistons (4) being each provided with a broadened foot (6), said broadened feet (6) being kept in contact with the rotor (7) also during the suction strokes of the respective pistons (4) by means of a coupling ring (26) of a substantially L-shaped cross-section, the axial ring portion (26a) of which engages the radial outer end faces of the broadened feet and the radial portion (26b) of which keeps said ring (26) axially in place. According to the invention the coupling ring (26) has its radial portion (26b) bearing loosely against a radial sliding surface, while the broadened feet (6) at the radial inner piston ends are in the shape of heads which are integrally formed with the respective pistons (4), the free end faces of said heads, as well as the end faces adjoining the respective pistons (4) beig spherically shaped, the axial portion of the coupling (26) having an inner circumferential surface of a slightly conically widening shape.

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