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    Self compensating adjustable fit progressing cavity pump for oil-well applications with varying temperatures
    41.
    发明授权
    Self compensating adjustable fit progressing cavity pump for oil-well applications with varying temperatures 失效
    具有不同温度的油井应用的自补偿可调节适合进气腔泵

    公开(公告)号：US06457958B1

    公开(公告)日：2002-10-01

    申请号：US09818059

    申请日：2001-03-27

    Applicant: Lonnie Dunn

    Inventor： Lonnie Dunn

    IPC: F04C2107

    CPC classification number: F04C2/1071 ,  F04C2/1075 ,  F04C2250/201 ,  F04C2270/17

    Abstract: The present invention provides an adjustable rotor and/or stator, so that the interference fit and/or clearance can be adjusted. The rotor and/or stator are tapered to provide a difference in fit between the rotor and stator by longitudinal adjustment of their relative position. The relative longitudinal adjustment is achieved in response to a change in temperature and is matched to the taper angle of the stator/rotor to maintain a desired interference fit.

    Abstract translation: 本发明提供一种可调整的转子和/或定子，从而可以调节过盈配合和/或间隙。 转子和/或定子是锥形的，以通过其相对位置的纵向调整来提供转子和定子之间的配合差。 相应的纵向调整是根据温度变化而实现的，并且与定子/转子的锥角匹配以保持所需的过盈配合。

    Screw pumps
    42.
    发明授权
    Screw pumps 有权
    螺杆泵

    公开(公告)号：US06217305B1

    公开(公告)日：2001-04-17

    申请号：US09334323

    申请日：1999-06-16

    Applicant: Nigel Paul Schofield ,  Michael Henry North

    Inventor： Nigel Paul Schofield ,  Michael Henry North

    IPC: F03C200

    CPC classification number: F01C21/02 ,  F04C18/084 ,  F04C18/16 ,  F04C29/0078 ,  F04C2240/50 ,  F04C2250/201

    Abstract: A screw pump provided with a first shaft and spaced therefrom and parallel thereto a second shaft mounted in a pump body. A first rotor is mounted on the first shaft and a second rotor mounted on the second shaft. Each of the first and second rotors having formed on an outer surface thereof one or more one helical vanes or threads intermeshing together so that rotary movement of the shafts will cause a fluid to be pumped. A first bearing arrangement is associated with the first shaft and a second bearing arrangement is associated with the second shaft. A bearing carrier is provided for each bearing arrangement and mounted within the pump body so as to be independent from each other.

    Abstract translation: 螺杆泵设置有第一轴并且与其平行并与其平行的第二轴安装在泵体中。 第一转子安装在第一轴上，第二转子安装在第二轴上。 第一和第二转子中的每一个在其外表面上形成有一个或多个螺旋叶片或螺纹相互啮合在一起，使得轴的旋转运动将导致流体被泵送。 第一轴承装置与第一轴相关联，并且第二轴承装置与第二轴相关联。 为每个轴承装置设置一个轴承架，并安装在泵体内，以便彼此独立。

    Vacuum pumps
    43.
    发明授权
    Vacuum pumps 有权
    真空泵

    公开(公告)号：US6129534A

    公开(公告)日：2000-10-10

    申请号：US334316

    申请日：1999-06-16

    Applicant: Nigel Paul Schofield ,  Michael Henry North

    Inventor： Nigel Paul Schofield ,  Michael Henry North

    IPC: F04C18/16 ,  F04C23/00 ,  F01C1/24

    CPC classification number: F04C23/001 ,  F04C18/16 ,  F04C2250/201 ,  F04C2270/03

    Abstract: A compound vacuum pump incorporating a screw mechanism section. The screw mechanism section comprising two externally threaded rotors mounted on respective shafts in a pump body. The rotors are adapted for counter-rotation in a first chamber within the pump body with intermeshing of the rotor threads to pump gas by action of the rotors. The root diameter of each rotor increases and the thread diameter of each rotor decreases in a direction taken from pump inlet and in which the gas is pumped. The pump additionally incorporates a roots mechanism section comprising two roots-type profile rotors also mounted on the respective shafts and adapted for counter-rotation in a second chamber within the pump body situated at an inlet end of the pump.

    Abstract translation: 一种结合螺旋机构部分的复合真空泵。 螺杆机构部分包括安装在泵体中相应轴上的两个外螺纹转子。 转子适于在泵体内的第一室中反转，通过转子的作用使转子螺纹与泵送气体相互啮合。 每个转子的根直径增加，并且每个转子的螺纹直径在从泵入口取出的方向上减小，并且其中气体被泵送。 泵还包括根机构部分，其包括两个根型轮廓转子，其也安装在相应的轴上并且适于在位于泵的入口端处的泵体内的第二室中的反向旋转。

    COMPLEX SCREW ROTORS
    47.
    发明公开
    COMPLEX SCREW ROTORS 审中-公开

    公开(公告)号：US20230272797A1

    公开(公告)日：2023-08-31

    申请号：US18312057

    申请日：2023-05-04

    Applicant: Gardner Denver, Inc.

    Inventor： Luke Gray ,  Taylor Stratman ,  Bernard Conley ,  Brent Ransdell ,  Daniel Peana

    IPC: F04C18/08 ,  F04C18/16 ,  F04C18/20

    CPC classification number: F04C18/084 ,  F04C18/088 ,  F04C18/16 ,  F04C18/20 ,  F04C2250/201 ,  F04C2240/20

    Abstract: A compressor design includes a male rotor (10) having one or more helical lobes (12) and a female rotor (14) having one or more helical grooves (16). The male rotor is mounted on a first shaft and the female rotor is mounted on a second shaft. The male rotor is positioned in a first section of a chamber and the female rotor is positioned in a second section of the chamber. Fluid enters the chamber at an inlet, and when the rotors are driven, the lobes of the male rotor fit into the grooves of the female rotor, causing compression and movement of the fluid towards an outlet or discharge end where the compressed fluid is discharged. The configuration of the lobe and groove helix, the lobe and groove profile, and the outer diameter of the rotors can be varied in different combinations to form different rotors.

    Complex screw rotors
    48.
    发明授权
    Complex screw rotors 有权

    公开(公告)号：US11644034B2

    公开(公告)日：2023-05-09

    申请号：US17229331

    申请日：2021-04-13

    Applicant: GARDNER DENVER, INC.

    Inventor： Luke Gray ,  Taylor Stratman ,  Bernard Conley ,  Brent Ransdell ,  Daniel Peana

    IPC: F04C18/08 ,  F04C18/16 ,  F04C18/20

    CPC classification number: F04C18/084 ,  F04C18/088 ,  F04C18/16 ,  F04C18/20 ,  F04C2240/20 ,  F04C2250/201

    Abstract: A compressor design includes a male rotor (10) having one or more helical lobes (12) and a female rotor (14) having one or more helical grooves (16). The male rotor is mounted on a first shaft and the female rotor is mounted on a second shaft. The male rotor is positioned in a first section of a chamber and the female rotor is positioned in a second section of the chamber. Fluid enters the chamber at an inlet, and when the rotors are driven, the lobes of the male rotor fit into the grooves of the female rotor, causing compression and movement of the fluid towards an outlet or discharge end where the compressed fluid is discharged. The configuration of the lobe and groove helix, the lobe and groove profile, and the outer diameter of the rotors can be varied in different combinations to form different rotors.

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