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126 条记录 (耗时 0.014 秒)

    DRIVE TRANSMISSION MEANS.
    91.
    发明公开
    DRIVE TRANSMISSION MEANS. 失效
    DEVICE FOR输送驱动力。

    公开(公告)号：EP0041518A4

    公开(公告)日：1984-03-01

    申请号：EP80902363

    申请日：1980-12-10

    申请人： MARSH MERVYN ROY

    发明人： MARSH MERVYN ROY

    IPC分类号： F04C28/00 ,  F04B49/00 ,  F04C2/20 ,  F04C14/00 ,  F04C14/26 ,  F16H39/36 ,  F16H61/40 ,  F04B49/02 ,  F04C15/04 ,  F04C29/10 ,  F16H39/44

    CPC分类号： F04C14/26 ,  F04C2/20

    摘要： A pump having unloading means associated therewith repetitively unloading same. The pump may be of the rotary positive displacement type with the unloading means taking the form of circumferentially extending pressure relief recesses (120) located along an edge of the rotor cylindrical portion (103) intermediate lobes (113 and 114). Communication between the pump inlet (101) and outlet (102) occurs repetitively producing a pulsating output. In use of the pump in a drive transmission system transmitting power from a prime mover to a load, a flywheel driven by the prime mover drives the pump which in turn drives an hydraulic motor. The unloading means repetitively unloads the pump allowing the prime mover to accelerate the flywheel, compensation means being provided to drive the hydraulic motor while the pump is unloaded. Other kinds of pumps provided with means internal or external thereto for repetitively unloading same, are also disclosed.

    STACKED GEROTOR PUMP PRESSURE PULSATION REDUCTION
    92.
    发明公开
    STACKED GEROTOR PUMP PRESSURE PULSATION REDUCTION 审中-公开

    公开(公告)号：EP4215719A1

    公开(公告)日：2023-07-26

    申请号：EP23152714.4

    申请日：2023-01-20

    申请人： Hamilton Sundstrand Corporation

    发明人： GOY, Edward W. ,  LE DUC, Zachary Allen Ray

    IPC分类号： F01C21/10 ,  F04C2/10 ,  F04C11/00 ,  F04C14/02 ,  F04C14/26 ,  F04C15/00

    摘要： A stacked gerotor pump (101) is provided. The stacked gerotor pump includes a first gerotor pump (111) defining a first inlet section (1111) and a first outlet section (1112), a second gerotor pump (112) defining a second inlet section (1121) and a second outlet section (1122) and a plate (113). The plate is interposed between the first and second gerotor pumps and defines upstream cavities (1131, 1132) respectively communicative with the first and second inlet sections, downstream cavities respectively communicative with the first and second outlet sections and a pre-pressurization hole by which the second outlet section is communicative with the first inlet section.

    PUMPING APPARATUS
    98.
    发明公开
    PUMPING APPARATUS 审中-公开

    公开(公告)号：EP3550145A1

    公开(公告)日：2019-10-09

    申请号：EP19163777.6

    申请日：2019-03-19

    申请人： Casappa S.p.A.

    发明人： PANNO, Alessandro ,  GUIDETTI, Marco

    IPC分类号： F04C2/10 ,  F04C11/00 ,  F04C14/26

    摘要： A pumping apparatus comprising:
    i) a first and a second reversible volumetric gear pump (1, 2); the first volumetric pump (1) drawing in rotation the second volumetric pump (2); the first pump (1) comprising a first housing compartment (12) for housing a first pair (11) of toothed wheels; the second pump (2) comprising a second housing compartment (22) for housing a second pair (21) of toothed wheels;
    ii) a first channel (13) that places in fluid connection a first zone (121) of the first compartment (12) and a first zone (221) of the second compartment (22);
    iii) a second channel (23) that places in fluid connection a second zone (122) of the first compartment (12) and a second zone (222) of the second compartment (22);
    Iv) means (3) for opening/closing the first and the second channel (13, 23);
    v) a first, a second, a third and a fourth openings (14, 15, 24, 25) intended to allow the fluid communication of the pumping apparatus (10) with the outside;
    The pumping apparatus (10) can assume a first operating configuration wherein the first and the second pumps (1, 2) have a direction of rotation opposite to that of the second configuration.