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公开(公告)号：US20240352931A1
公开(公告)日：2024-10-24
申请号：US18712858
申请日：2022-11-18
Applicant: NETZSCH Pumpen & Systeme GmbH
Inventor： Dominik Sinseder , Philipp Nübl , Stefan Weigl , Stefan Voit , Stefan Schöberl , Thomas Schmitt
IPC: F04C2/16
CPC classification number: F04C2/16 , F04C2230/20 , F04C2240/10
Abstract: The invention relates to an eccentric screw pump, including a rotor, which forms a conveying screw, and a stator, which forms a screw flight and in which the rotor rotates during conveying operation, wherein: the stator includes a stator housing, in which a stator lining is disposed, the stator lining reproducing the screw flight; the stator lining is a sleeve which is supported, at its outer periphery, on the stator housing by means of a support structure which forms cavities; the support structure is designed and dimensioned, in accordance with the location of its connection to the sleeve, in such a way that the supporting effect provided by the support structure is matched to the local needs of the sleeve.
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公开(公告)号：US12084975B2
公开(公告)日：2024-09-10
申请号：US18482153
申请日：2023-10-06
Applicant: Abaco Drilling Technologies LLC
Inventor： Peter Thomas Cariveau , Timothy Mark Miller , Jing Lu
CPC classification number: F01C1/101 , E21B4/02 , F04C2/1075 , F04C13/008 , F04C2240/10 , F04C2250/30
Abstract: Tapered stator designs are engineered in a positive displacement motor (PDM) power section to relieve stator stress concentrations at the lower (downhole) end of the power section in the presence of rotor tilt. A contoured stress relief is provided in the stator to compensate for rotor tilt, where the taper is preferably more aggressive at the lower end of the stator near the bit.
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公开(公告)号：US20240044330A1
公开(公告)日：2024-02-08
申请号：US18490858
申请日：2023-10-20
Applicant: VOGELSANG GMBH & CO. KG
Inventor： Peter Hartogh , Michael Rolfes , Hugo Vogelsang
CPC classification number: F04C2/107 , B23C3/08 , B23C2220/08 , F04C2230/103 , F04C2230/22 , F04C2240/10 , F04C2240/20 , B23C2220/48
Abstract: A method of manufacturing a metallic rotor of an eccentric screw pump, comprising clamping a workpiece extending along a central longitudinal axis in a workpiece clamping device and removing material from the workpiece by cutting with a cutting tool. The invention further comprises not producing the surface of the rotor in a three-axis whirling process, using the cutting tool to produce the outer surface geometry of the rotor, advancing the cutting tool along an axis of advance that is parallel to the longitudinal axis of the rotor, and rotating the cutting tool about an axis of tool rotation that is parallel to the longitudinal axis of the rotor.
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公开(公告)号：US20240044251A1
公开(公告)日：2024-02-08
申请号：US18482153
申请日：2023-10-06
Applicant: Abaco Drilling Technologies LLC
Inventor： Peter Thomas Cariveau , Timothy Mark Miller , Jing Lu
CPC classification number: F01C1/101 , E21B4/02 , F04C13/008 , F04C2/1075 , F04C2250/30 , F04C2240/10
Abstract: Tapered stator designs are engineered in a positive displacement motor (PDM) power section to relieve stator stress concentrations at the lower (downhole) end of the power section in the presence of rotor tilt. A contoured stress relief is provided in the stator to compensate for rotor tilt, where the taper is preferably more aggressive at the lower end of the stator near the bit.
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公开(公告)号：US11867172B2
公开(公告)日：2024-01-09
申请号：US17636398
申请日：2020-06-29
Applicant: HEISHIN Ltd.
Inventor： Nobuhisa Suhara
CPC classification number: F04C15/0073 , F04C2/107 , F04C2240/10 , F04C2240/30
Abstract: A uniaxial eccentric screw pump includes: a rotor 1 including a shaft body of a male screw type; a stator 2 having a through hole 2a of a female screw type through which the rotor 1 is inserted; a casing 3 connected to one end side of the stator 2; an end stud 4 connected, to the other end side of the stator 2; and a position adjusting member 5 that adjusts a relative position of the stator 2 with respect to the rotor 1 in an axial direction.
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Patent Agency Ranking
公开(公告)号：US20230193903A1
公开(公告)日：2023-06-22
申请号：US17972813
申请日：2022-10-25
Applicant: LEX SUBMERSIBLE PUMPS FZE COMPANY
Inventor： ANTON Shakirov , Vitaly Koropetskiy , Iaroslav Alekseev , Vadim Batalov
IPC: F04C18/107 , F04D29/16 , F04D29/42 , F04C29/12 , F04D17/12 , F04D29/057 , E21B43/12 , F04C23/00 , F04C27/00
CPC classification number: F04C18/107 , F04D29/162 , F04D29/4213 , F04C29/12 , F04D17/12 , F04D29/057 , E21B43/121 , F04C23/001 , F04C27/008 , F04C2240/10 , F04C2240/54 , F04C2240/30 , F04C2240/20 , F04D3/02
Abstract: A cylindrical rotor inside of the cylindrical stator, wherein the cylindrical rotor has a screw thread with an opposite direction relating to the stator screw thread, wherein the rotor has a curvilinear external surface shape and a stator having an internal semicircular surface shape wherein rotor external surface shape and the stator has an internal surface shape having rounded shapes without rectangular edges to obtain high speed performance with reduced vortices, wherein a gap between the internal surface of the stator and the external surface of the rotor is 0.1-0.2 millimeters and an unloading thrust bearing attached to the rotor shaft positioned between intake thrust bearing and the intake end of the rotor and a cavity in the unloading thrust bearing configured to receive production fluid from the discharge end of the rotor.
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公开(公告)号：US11649822B2
公开(公告)日：2023-05-16
申请号：US17169629
申请日：2021-02-08
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Kyle DeHoff , Chris Luipold , Jeffrey Hemphill
CPC classification number: F04C2/126 , F04C2/08 , F04C2/10 , F04C2/102 , F04D13/06 , F04C2240/10 , F04C2240/20 , F04C2240/40 , F04C2240/50 , F04C2240/60
Abstract: A split power gerotor pump includes a rotational axis, a shaft, an inner gerotor, an eccentric pocket, and an outer gerotor. The inner gerotor is rotationally fixed on the shaft, rotatable about the rotational axis, and includes n first lobes. The eccentric pocket is rotatable about the rotational axis, and includes a cylindrical bore with a center radially offset from the rotational axis and an outer surface, disposed radially outside of the cylindrical bore and arranged for direct engagement with a gear or a rotor for an electric motor. The outer gerotor includes a cylindrical outer surface installed in the cylindrical bore and n+1 second lobes.
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公开(公告)号：US20180207576A1
公开(公告)日：2018-07-26
申请号：US15746261
申请日：2016-06-15
Applicant: Edwards Limited
Inventor： Andrew James Seeley , Duncan Michael Price , Gary Peter Knight
CPC classification number: B01D53/1406 , B01D53/323 , B01D2252/103 , B01D2259/818 , F04C19/00 , F04C19/001 , F04C29/0042 , F04C2240/10 , F04C2240/20 , F04C2250/30
Abstract: Liquid ring pumps are used to pump a variety of fluid types. The present invention provides a two stage liquid ring pump through which an exhaust gas comprising compounds to be destroyed is passed. The exhaust gas passes through the first stage to a gas abatement device, following which it is passed back to the second stage of the liquid ring pump for removal of the compounds formed in said abatement device. The stages of the liquid ring pump may be adjustable.
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公开(公告)号：US09995301B2
公开(公告)日：2018-06-12
申请号：US15123029
申请日：2015-03-04
Applicant: KYB Corporation
Inventor： Masamichi Sugihara , Tomoyuki Fujita , Tomoyuki Nakagawa , Tsutomu Komiya
CPC classification number: F04C2/3448 , F01C21/0809 , F01C21/0854 , F01C21/0863 , F01C21/10 , F01C21/108 , F04C2/3446 , F04C15/00 , F04C2230/603 , F04C2240/10 , F04C2240/20
Abstract: A vane pump includes a rotor; a plurality of vanes; a cam ring; and a pump body having an accommodating concave portion accommodating the cam ring. The cam ring includes a ring fitting portions formed in a plurality of regions on an outer circumference and a ring small-diameter portions formed on the outer circumference so as to have an outer diameter smaller than those of the ring fitting portions. The accommodating concave portion has a body fitting portion to which the ring fitting portions is fitted and a body large-diameter portions formed on the inner circumference in a plurality of regions so as to have an inner diameter lager than that of the body fitting portions.
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公开(公告)号：US09920756B2
公开(公告)日：2018-03-20
申请号：US14622996
申请日：2015-02-16
Applicant: Schwäbische Hüttenwerke Automotive GmbH
Inventor： Klaus Merk
IPC: F01C5/02 , F01C20/18 , F04C14/18 , F04C2/34 , F04C15/06 , F04C18/34 , F04C28/18 , F04C29/12 , F04C2/344 , F04C14/22
CPC classification number: F04C2/34 , F04C2/344 , F04C14/18 , F04C14/226 , F04C15/06 , F04C18/34 , F04C28/18 , F04C29/12 , F04C2230/21 , F04C2240/10 , F04C2240/20
Abstract: A rotary pump including: a housing having an inlet and an outlet for a fluid, and a delivery chamber connected to the inlet and outlet; a delivery rotor rotatable in the delivery chamber about a rotational axis has a structure which is central in relation to the rotational axis; and a setting structure surrounding the delivery rotor and with the delivery rotor forms delivery cells, delivering the fluid from the inlet to the outlet, can be moved back and forth relative to the delivery rotor, in order to adjust a delivery volume of the rotary pump. At least one of the setting structure and/or the rotor structure is a material composite structure including a molded region made of plastic and a functional region which is fixedly connected to the molded region and made of a functional material which has a different chemical composition to the plastic of the molded region.
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