公开(公告)号：US11421693B2

公开(公告)日：2022-08-23

申请号：US16881753

申请日：2020-05-22

Applicant: Roper Pump Company

Inventor： Edmond Tate Coghlan

IPC: F01C1/10 ,  F04C2/10 ,  F04C18/10 ,  F04D17/04 ,  F04D7/04 ,  F04D29/22 ,  F01C19/02 ,  F04C13/00 ,  F04C2/107 ,  F01C21/10 ,  F04C14/28

Abstract: A stator for a helical gear device includes a first section having first helically convoluted chamber with a set of radially inwardly extending lobes and a second section adjacent to the first section. The second section includes a stack of cutter disks. Each cutter disk includes a front surface, a rear surface, an interior surface defining a central opening extending from the front surface to the rear surface, a forward cutting edge, and a rearward cutting edge. The interior surface forms a same number of lobes for the central opening as the set of radially inwardly extending lobes in the first section. Each cutter disk is aligned along a common centerline, and each cutter disk is rotated slightly relative to each other to form a second helically convoluted chamber with a same pitch as the first helically convoluted chamber. The second helically convoluted chamber exposes, to materials passing through, portions of the forward cutting edge or the rearward cutting edge of each cutter disk.

公开(公告)号：US20210324853A1

公开(公告)日：2021-10-21

申请号：US17234181

申请日：2021-04-19

Applicant: Roper Pump Company

Inventor： Cody Richard Reynolds ,  Edmond Coghlan, III ,  Tyson Bentley Anderson

IPC: F04C2/107

Abstract: A stator segment is provided for a helical gear device. The stator segment includes a stator tube and modular stator inserts. The stator tube has an inner profile with at least two internal sides that extend longitudinally along an interior of the stator tube. The modular stator inserts each have an outer profile that substantially matches and fits within the inner profile of the stator tube. The modular stator inserts also each have an interior helical profile that defines a central opening. The modular stator inserts are configured to be removably inserted longitudinally into the stator tube along the inner profile of the stator tube. The inner profile aligns the modular stator inserts to form a continuous helical chamber and prevents rotation of the modular stator inserts relative to the stator tube.

公开(公告)号：US10823169B2

公开(公告)日：2020-11-03

申请号：US15817961

申请日：2017-11-20

Applicant: Roper Pump Company

Inventor： William D. Flavelle ,  Michael Andrew Ingram

IPC: F03C2/00 ,  F03C4/00 ,  F04C18/00 ,  F04C2/00 ,  F04C2/344 ,  F04C2/18 ,  F01C19/00 ,  F04C15/00 ,  F04C2/08

Abstract: A pump fluid driving apparatus includes a housing having a chamber, with two gears mounted within the chamber. The housing includes a first rounded wall section and a second rounded wall section, the first and second rounded wall sections defining at least a portion of the chamber. The gears have teeth located about their respective peripheries and operatively positioned with the teeth of the first gear and the teeth of the second gear intermeshed. The teeth include slotted teeth and solid teeth arranged with uniform spacing in a repeating pattern about the periphery of each of the gears, with each of the slotted teeth having a vane slot and a radially extending vane extending from the vane slot, and each radially extending vane being movable within the respective vane slot and being configured to contact the respective first or second rounded wall sections.

公开(公告)号：US10662950B2

公开(公告)日：2020-05-26

申请号：US15724362

申请日：2017-10-04

Applicant: Roper Pump Company

Inventor： Edmond Tate Coghlan

IPC: F04C2/107 ,  F01C1/10 ,  F01C1/107 ,  F04C13/00 ,  F04D7/04 ,  F01C19/02 ,  F04D29/22 ,  F01C21/10 ,  F04C14/28

Abstract: A stator for a helical gear device includes a first section having first helically convoluted chamber with a set of radially inwardly extending lobes and a second section adjacent to the first section. The second section includes a stack of cutter disks. Each cutter disk includes a front surface, a rear surface, an interior surface defining a central opening extending from the front surface to the rear surface, a forward cutting edge, and a rearward cutting edge. The interior surface forms a same number of lobes for the central opening as the set of radially inwardly extending lobes in the first section. Each cutter disk is aligned along a common centerline, and each cutter disk is rotated slightly relative to each other to form a second helically convoluted chamber with a same pitch as the first helically convoluted chamber. The second helically convoluted chamber exposes, to materials passing through, portions of the forward cutting edge or the rearward cutting edge of each cutter disk.

公开(公告)号：US20180119697A1

公开(公告)日：2018-05-03

申请号：US15724362

申请日：2017-10-04

Applicant: Roper Pump Company

Inventor： Edmond Tate Coghlan

IPC: F04D7/04 ,  F04D29/22 ,  F01C21/10 ,  F01C19/02

CPC classification number: F04D7/045 ,  F01C19/025 ,  F01C21/104 ,  F04C2/1075 ,  F04C13/004 ,  F04C13/005 ,  F04C13/008 ,  F04C14/28 ,  F04C2230/22 ,  F04C2230/231 ,  F04C2280/02 ,  F04D29/2288 ,  F05B2240/10 ,  F05C2201/0448

Abstract: A stator for a helical gear device includes a first section having first helically convoluted chamber with a set of radially inwardly extending lobes and a second section adjacent to the first section. The second section includes a stack of cutter disks. Each cutter disk includes a front surface, a rear surface, an interior surface defining a central opening extending from the front surface to the rear surface, a forward cutting edge, and a rearward cutting edge. The interior surface forms a same number of lobes for the central opening as the set of radially inwardly extending lobes in the first section. Each cutter disk is aligned along a common centerline, and each cutter disk is rotated slightly relative to each other to form a second helically convoluted chamber with a same pitch as the first helically convoluted chamber. The second helically convoluted chamber exposes, to materials passing through, portions of the forward cutting edge or the rearward cutting edge of each cutter disk.

公开(公告)号：US20180100730A1

公开(公告)日：2018-04-12

申请号：US15601212

申请日：2017-05-22

Applicant: Roper Pump Company

Inventor： Tyson Bentley Anderson ,  Loyd Dache Smith ,  Zachariah Paul Rivard ,  Edmond Tate Coghlan

IPC: G01B5/20 ,  G01B5/28

CPC classification number: G01B3/14

Abstract: A comparator tool is provided for evaluating the profile of a multi-lobe helical rotor. The comparator tool includes a housing with a first end and a second end and an internal bore extending from the first end to the second end. The internal bore includes a first diameter having nominal clearance for an original equipment manufacturer (OEM)-specified major diameter of the rotor, a second diameter having nominal clearance for an OEM-specified minor diameter of the rotor, and multiple helical grooves corresponding to a number of lobes in the helical rotor. Each of the multiple helical grooves has nominal clearance for an OEM-specified tip diameter of the rotor. The comparator tool slides along the length of the rotor and provides visibility of an interface between a circumference of the rotor and the first end at any place along a length of the rotor.