US3791777A - Peristaltic pump with a plurality of continuously adjustable channels - Google Patents

Peristaltic pump with a plurality of continuously adjustable channels Download PDF

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Publication number
US3791777A
US3791777A US00187643A US3791777DA US3791777A US 3791777 A US3791777 A US 3791777A US 00187643 A US00187643 A US 00187643A US 3791777D A US3791777D A US 3791777DA US 3791777 A US3791777 A US 3791777A
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Prior art keywords
rotor
stacked
support base
grooved
sectors
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US00187643A
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S Impedovo
P Papoff
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SnamProgetti SpA
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SnamProgetti SpA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/002—Sleeves or nipples for pipes of the same diameter; Reduction pieces
    • F16L21/005—Sleeves or nipples for pipes of the same diameter; Reduction pieces made of elastic material, e.g. partly or completely surrounded by clamping devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1292—Pumps specially adapted for several tubular flexible members
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/08—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a stream of discrete samples flowing along a tube system, e.g. flow injection analysis

Definitions

  • Patent 1 lnventors : Paolo Papoff, Bari; Sebastiano lmpedovo, P'utignano, both of Italy Assignee: Snam Progetti S.p.A., Milanese,
  • a novel peristaltic pump which comprises a support base, a shaft mounted for rotation on said support base, a rotor means mounted on said shaft at one side of said support base, motor means for driving said shaft mounted on the opposite side of said support means, said rotor means having spaced around its periphery a plurality of force bearings, in a plurality of rows spaced axially along said rotor, a half jaw mounted around the periphery of said rotor means, said half jaw having a plurality of stacked-grooved sectors spaced axially along said rotor means, said plurality of stacked-grooved sectors having individual means for independent adjustment of the radial depth of each of said stacked-grooved sectors.
  • the present invention relates to the provision of a peristaltic pump with a plurality of channels, allowing the independent and continuous adjustment for each channel of the distance between the force bearing and the channel guide, so as to allow in this way the contemporaneous use of tubes of different diameter and the independent control of the delivery of each single channel.
  • peristaltic pumps with a plurality of channels are known, which find their most suitable use in automatic chemical analysis.
  • the object of the present invention is to remove the above mentioned drawbacks and thus to provide a peristaltic pump with a plurality of channels which, as it can accommodate tubes of any desired different diameter, allows the contemporaneous pumping of different volumetric deliveries.
  • This is obtained in practice by making each pump channel. with a grooved sector which can be continuously adjusted in the radial dirction through a setting pin.
  • the sectors of the guide channels of the pump tubes may be moved more or less toward the force bearing continuously and independently of one another, in this way it is not only possible to use tubes of different diameters but also to continue the use of tubes which have become deformed through use without causing malfunctioning and flow unevenness.
  • FIG. 1 is a top view of the peristaltic pump with a plurality of channels according to the present invention.
  • FIG. 2 is a front sectional view of the pump taken along the line A-A of FIG. 1.
  • reference numeral 1 indicates the support base plate of the pump, in a hole of which plate a shaft 3 is mounted through the bearing 2.
  • Said shaft 3, the section of which is enlarged under plate I, is also rotatably supported through bearing 4 by a bracket 5 which is fixed by means of screws to the under face of the plate 1.
  • shaft 3 may rotate only around a perfectly vertical axis and this rotation is imparted thereto by a motor 6 whose shaft 7 is keyed through key 8 to the interior of the lower part of shaft 3.
  • a rotor 9 is inserted on the upper end of said shaft 3 and is fixedly secured thereto by the stop dowel l0.
  • Rotor 9 has on its periphery as many circular grooves 11 as the required number of the pump channels (eight in the embodiment shown herein) and in these grooves sets of force bearings 12 (ten sets are shown in the figures of the drawings) are inserted, being supported by idle pins 13.
  • a solid metal half-jaw 14 is rigidly fixed on plate 1 by means of four fastening screws 15 and four locking nuts 16, in the proximity of the bearing rotor 9 and with its concavity facing it, while a tube guiding bracket 17 is mounted on said plate 1 opposite to said half-jaw 14 at the other side of rotor 9;
  • the tube guiding bracket 17 consists of a central body 18 and two lateral blocks 19.
  • the central body 18 is rigidly fixed to the plate 1 by means of two fastening screws 20 and two locking nuts 21 so as to be perfectly parallel to the half-jaw 14, and in proximity of its two lateral ends it has two vehical sets of holes 22 and 23 of different diameters, through some of which the various tubes 24 of the pump are being passed (eight tubes in the embodiment shown).
  • the two lateral blocks 19 are pressed against the corresponding uprights of the body 18, each through two stud bolts 25, and are used to clamp said tubes of the pump in order to prevent them from bieng entrained by the rotation of rotor 9.
  • each sector 26 has crosssection generally in the form of a concavity corresponding to that of the half jaw 14 and their inner grooves 27 define, together with the bearings 12 of the rotor 9, the pump channels in which tubes 24 are passed.
  • the grooved sectors 26 are also all movable in the radial direction independently from one another and in such a movement each sector is guided by the underlying sector excepting the bottom sector which is guided by the plane of the plate 1.
  • the radial movement of each sector 26 is obtained through a threaded setting pin 28 which, being threadably supported by the half jaw 14 at its symmetry axis, urges with its end against the back of the corresponding sector 26 in a suitable recess 29 thereof.
  • a peristaltic pump which comprises a support base, a shaft mounted for rotation on said support base, a rotor means mounted on said shaft at one side of said support base, motor means for driving said shaft mounted on the opposite side of said support base, said rotor means having spaced around its periphery a plurality of force bearings in a plurality of rows spaced axially along said rotor, a half jaw mounted around the pe riphery of said rotor means, said half jaw having a plurality of stacked-grooved sectors spaced axially along 2.
  • a peristaltic pump according to claim 1 wherein said individual means for independent adjustment of the radial distance of each of said plurality of stackedgroove sectors comprises a threaded setting pin which is threadably supported by said half jaw.

Abstract

A novel peristaltic pump is disclosed which comprises a support base, a shaft mounted for rotation on said support base, a rotor means mounted on said shaft at one side of said support base, motor means for driving said shaft mounted on the opposite side of said support means, said rotor means having spaced around its periphery a plurality of force bearings, in a plurality of rows spaced axially along said rotor, a half jaw mounted around the periphery of said rotor means, said half jaw having a plurality of stacked-grooved sectors spaced axially along said rotor means, said plurality of stacked-grooved sectors having individual means for independent adjustment of the radial depth of each of said stacked-grooved sectors.

Description

United States Papoff et al.
Patent 1 lnventors: Paolo Papoff, Bari; Sebastiano lmpedovo, P'utignano, both of Italy Assignee: Snam Progetti S.p.A., Milanese,
, ltaly Filed: Oct. 8, 1971 Appl. No.: 187,643
Foreign Application Priority Data Oct. 8, 1970 Italy 30722/70 US. Cl. 417/475, 417/477 Int. Cl. F04b 43/08, F04b 43/12, FO4b 45/06 Field of Search 417/475, 477, 476; 418/45 References Cited UNITED STATES PATENTS 7/1972 Kushner 417/477 3/1973 Gelfand. H1883 Morton 417/477 [451 Feb. 12, 1974 Bastian 417/477 Primary Examiner-Carlton R. Croyle Assistant Examiner-Richard C. Gluck [5 7 ABSTRACT A novel peristaltic pump is disclosed which comprises a support base, a shaft mounted for rotation on said support base, a rotor means mounted on said shaft at one side of said support base, motor means for driving said shaft mounted on the opposite side of said support means, said rotor means having spaced around its periphery a plurality of force bearings, in a plurality of rows spaced axially along said rotor, a half jaw mounted around the periphery of said rotor means, said half jaw having a plurality of stacked-grooved sectors spaced axially along said rotor means, said plurality of stacked-grooved sectors having individual means for independent adjustment of the radial depth of each of said stacked-grooved sectors.
2 Claims, 2 Drawing Figures PAIENIEflFiB 1 2 1914 sum 1 OF 2 SHEET 2 BF 2 IN VEN TORS 7154/, ATTORNEY PERISTALTIC PUMP WITH A PLURALITY OF CONTINUOUSLY ADJUSTABLE CHANNELS The present invention relates to the provision of a peristaltic pump with a plurality of channels, allowing the independent and continuous adjustment for each channel of the distance between the force bearing and the channel guide, so as to allow in this way the contemporaneous use of tubes of different diameter and the independent control of the delivery of each single channel. In the prior art several types of peristaltic pumps with a plurality of channels are known, which find their most suitable use in automatic chemical analysis. All these known pumps have, however, the drawback of being compelled to use tubes that are always of the same diameter and this means that, if volumes of liquids are to be mixed, having a different ratio gr/cm sec., one is compelled to work by varying the concentration ratios as it is not possible to do anything on the volumes. Furthermore, wear of the tubes and defects or variations of their outer diameter cause malfunctioning and flow unevenness in said pumps.
The object of the present invention is to remove the above mentioned drawbacks and thus to provide a peristaltic pump with a plurality of channels which, as it can accommodate tubes of any desired different diameter, allows the contemporaneous pumping of different volumetric deliveries. This is obtained in practice by making each pump channel. with a grooved sector which can be continuously adjusted in the radial dirction through a setting pin. In fact, as the sectors of the guide channels of the pump tubes may be moved more or less toward the force bearing continuously and independently of one another, in this way it is not only possible to use tubes of different diameters but also to continue the use of tubes which have become deformed through use without causing malfunctioning and flow unevenness.
The present invention will now be described in detail with reference to the accompanying drawings illustrating a preferred practical embodiment given by way of example only and without limiting the invention, as technical and structural variants may be resorted to in practice without departing from the scope of the present invention.
FIG. 1 is a top view of the peristaltic pump with a plurality of channels according to the present invention; and
FIG. 2 is a front sectional view of the pump taken along the line A-A of FIG. 1.
In said figures, reference numeral 1 indicates the support base plate of the pump, in a hole of which plate a shaft 3 is mounted through the bearing 2. Said shaft 3, the section of which is enlarged under plate I, is also rotatably supported through bearing 4 by a bracket 5 which is fixed by means of screws to the under face of the plate 1. In such a way shaft 3 may rotate only around a perfectly vertical axis and this rotation is imparted thereto by a motor 6 whose shaft 7 is keyed through key 8 to the interior of the lower part of shaft 3. A rotor 9 is inserted on the upper end of said shaft 3 and is fixedly secured thereto by the stop dowel l0. Rotor 9 has on its periphery as many circular grooves 11 as the required number of the pump channels (eight in the embodiment shown herein) and in these grooves sets of force bearings 12 (ten sets are shown in the figures of the drawings) are inserted, being supported by idle pins 13.
A solid metal half-jaw 14 is rigidly fixed on plate 1 by means of four fastening screws 15 and four locking nuts 16, in the proximity of the bearing rotor 9 and with its concavity facing it, while a tube guiding bracket 17 is mounted on said plate 1 opposite to said half-jaw 14 at the other side of rotor 9; The tube guiding bracket 17 consists of a central body 18 and two lateral blocks 19. The central body 18 is rigidly fixed to the plate 1 by means of two fastening screws 20 and two locking nuts 21 so as to be perfectly parallel to the half-jaw 14, and in proximity of its two lateral ends it has two vehical sets of holes 22 and 23 of different diameters, through some of which the various tubes 24 of the pump are being passed (eight tubes in the embodiment shown). The two lateral blocks 19 are pressed against the corresponding uprights of the body 18, each through two stud bolts 25, and are used to clamp said tubes of the pump in order to prevent them from bieng entrained by the rotation of rotor 9.
Now, according to the present invention, between the half jaw 14 and the bearing rotor 9 are placed a stacked configuration of as many grooved sectors 26 as there are pump channels. Said sectors 26 have crosssection generally in the form of a concavity corresponding to that of the half jaw 14 and their inner grooves 27 define, together with the bearings 12 of the rotor 9, the pump channels in which tubes 24 are passed. The grooved sectors 26 are also all movable in the radial direction independently from one another and in such a movement each sector is guided by the underlying sector excepting the bottom sector which is guided by the plane of the plate 1. The radial movement of each sector 26 is obtained through a threaded setting pin 28 which, being threadably supported by the half jaw 14 at its symmetry axis, urges with its end against the back of the corresponding sector 26 in a suitable recess 29 thereof.
It is therefore clear that by more or less screwing a setting pin 28 and in this way more or less radially. moving the corresponding grooved sector 26, the width of the corresponding channel is caused to be more or less changed accordingly, and this allows the use of a tube of larger or smaller diameter. On the other hand, as the position of each grooved sector with respect to the bearing rotor may be adjusted at will, independently of the position of the other grooved sectors, it is also clear that by means of the peristaltic pump being the subject matter of the present invention it is possible to use tubes of different diameters contemporaneously and moveover it is also possible to go on using tubes deformed by wear; to this end it is sufficient to adjust the channel used through the corresponding setting pin, so as to accommodate it to the new diameter of the worn tube.
What we claim is:
1. A peristaltic pump which comprises a support base, a shaft mounted for rotation on said support base, a rotor means mounted on said shaft at one side of said support base, motor means for driving said shaft mounted on the opposite side of said support base, said rotor means having spaced around its periphery a plurality of force bearings in a plurality of rows spaced axially along said rotor, a half jaw mounted around the pe riphery of said rotor means, said half jaw having a plurality of stacked-grooved sectors spaced axially along 2. A peristaltic pump according to claim 1 wherein said individual means for independent adjustment of the radial distance of each of said plurality of stackedgroove sectors comprises a threaded setting pin which is threadably supported by said half jaw.

Claims (2)

1. A peristaltic pump which comprises a support base, a shaft mounted for rotation on said support base, a rotor means mounted on said shaft at one side of said support base, motor means for driving said shaft mounted on the opposite side of said support base, said rotor means having spaced around its periphery a plurality of force bearings in a plurality of rows spaced axially along said rotor, a half jaw mounted around the periphery of said rotor means, sAid half jaw having a plurality of stacked-grooved sectors spaced axially along said rotor means, said plurality of stacked-grooved sectors, having individual means for independent adjustment of radial distance from the force bearings, said plurality of stacked-grooved sectors being guided in radial movement by the adjoining stacked-grooved sector.
2. A peristaltic pump according to claim 1 wherein said individual means for independent adjustment of the radial distance of each of said plurality of stacked-groove sectors comprises a threaded setting pin which is threadably supported by said half jaw.
US00187643A 1970-10-08 1971-10-08 Peristaltic pump with a plurality of continuously adjustable channels Expired - Lifetime US3791777A (en)

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CA (1) CA966722A (en)
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DE (1) DE2148468A1 (en)
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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876340A (en) * 1972-08-09 1975-04-08 Rank Organisation Ltd Peristaltic pump having pivotal reaction means
US4184815A (en) * 1977-03-14 1980-01-22 Extracorporeal Medical Specialties, Inc. Roller pump rotor with integral spring arms
US4231725A (en) * 1978-10-16 1980-11-04 Cole-Parmer Instrument Company Peristaltic pump
US4473173A (en) * 1983-01-10 1984-09-25 Applied Color Systems, Inc. Apparatus and method for low volume dispensing
US4673334A (en) * 1984-05-25 1987-06-16 Isco, Inc. Peristaltic pump
US4976593A (en) * 1986-12-03 1990-12-11 Meddiss, Incorporated Pulsatile flow delivery apparatus
WO1991002900A1 (en) * 1989-08-18 1991-03-07 Randolph Austin Company Variable occlusion peristaltic apparatus and method
US5064358A (en) * 1988-06-14 1991-11-12 Alessandro Calari Peristaltic pump adapted to operate simultaneously on two lines
US5082429A (en) * 1990-08-28 1992-01-21 Cole-Parmer Instrument Company Peristaltic pump
US5096393A (en) * 1989-08-28 1992-03-17 Csir Peristaltic pump with hinged rotor support housing and adjustable tube rack
US5213483A (en) * 1991-06-19 1993-05-25 Strato Medical Corporation Peristaltic infusion pump with removable cassette and mechanically keyed tube set
US5846061A (en) * 1996-11-08 1998-12-08 Board Of Trustees Of Michigan State University Peristaltic metering pump
US6484594B1 (en) 1997-12-12 2002-11-26 Research International, Inc. High efficiency a wetted surface cyclonic air sampler
US20050047946A1 (en) * 2003-08-25 2005-03-03 Hewlett-Packard Development Company, L.P. Peristaltic pump
US20050053502A1 (en) * 2003-09-08 2005-03-10 Hewlett-Packard Development Company, L.P. Peristaltic pump
US20050238515A1 (en) * 2004-04-27 2005-10-27 Hewlett-Packard Development Company., L.P. Peristaltic pump
US20050238516A1 (en) * 2004-04-27 2005-10-27 Hewlett-Packard Development Company, Lp Peristaltic pump
US20070058504A1 (en) * 2002-12-10 2007-03-15 Samsung Electronics Co., Ltd. Information storage medium and method of recording/reproducing the same
US20070217932A1 (en) * 2004-06-22 2007-09-20 Claude Voyeux Method and system for providing adjustable compression force on a tube in a peristaltic pump
US20110180172A1 (en) * 2010-01-22 2011-07-28 Blu-White Industries, Inc. High pressure, high flow rate tubing assembly for a positive displacement pump
US9777720B2 (en) 2013-03-14 2017-10-03 Blue-White Industries, Ltd. High pressure, high flow rate tubing assembly and adapter for a positive displacement pump
US9909579B2 (en) 2014-06-09 2018-03-06 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US20180245579A1 (en) * 2015-09-11 2018-08-30 Watson-Marlow Limited Peristaltic Pump
US20220154711A1 (en) * 2019-03-15 2022-05-19 Nxstage Medical, Inc. Peristaltic Pump
US11578716B2 (en) 2010-01-22 2023-02-14 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
CN117536714A (en) * 2024-01-10 2024-02-09 潍坊力创电子科技有限公司 Sleeve type air inlet device of internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4824339A (en) * 1987-08-19 1989-04-25 Cobe Laboratories, Inc. Peristaltic pump cartridge

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US328472A (en) * 1885-10-20 Jacob falleb
US3353491A (en) * 1965-09-28 1967-11-21 James W Bastian Pumping device
US3431864A (en) * 1966-12-22 1969-03-11 Charles B Jones Jr Peristaltic pump
US3679331A (en) * 1970-04-24 1972-07-25 Delta Scient Corp Metering pump and valve
US3723030A (en) * 1971-03-03 1973-03-27 Buchler Instr Division Peristaltic pump with stacked components

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US271257A (en) * 1883-01-30 morton
US328472A (en) * 1885-10-20 Jacob falleb
US3353491A (en) * 1965-09-28 1967-11-21 James W Bastian Pumping device
US3431864A (en) * 1966-12-22 1969-03-11 Charles B Jones Jr Peristaltic pump
US3679331A (en) * 1970-04-24 1972-07-25 Delta Scient Corp Metering pump and valve
US3723030A (en) * 1971-03-03 1973-03-27 Buchler Instr Division Peristaltic pump with stacked components

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876340A (en) * 1972-08-09 1975-04-08 Rank Organisation Ltd Peristaltic pump having pivotal reaction means
US4184815A (en) * 1977-03-14 1980-01-22 Extracorporeal Medical Specialties, Inc. Roller pump rotor with integral spring arms
US4231725A (en) * 1978-10-16 1980-11-04 Cole-Parmer Instrument Company Peristaltic pump
US4473173A (en) * 1983-01-10 1984-09-25 Applied Color Systems, Inc. Apparatus and method for low volume dispensing
US4673334A (en) * 1984-05-25 1987-06-16 Isco, Inc. Peristaltic pump
US4976593A (en) * 1986-12-03 1990-12-11 Meddiss, Incorporated Pulsatile flow delivery apparatus
US5064358A (en) * 1988-06-14 1991-11-12 Alessandro Calari Peristaltic pump adapted to operate simultaneously on two lines
WO1991002900A1 (en) * 1989-08-18 1991-03-07 Randolph Austin Company Variable occlusion peristaltic apparatus and method
US5009573A (en) * 1989-08-18 1991-04-23 Randolph Austin Company, Inc. Variable occlusion peristaltic apparatus and method
US5096393A (en) * 1989-08-28 1992-03-17 Csir Peristaltic pump with hinged rotor support housing and adjustable tube rack
US5082429A (en) * 1990-08-28 1992-01-21 Cole-Parmer Instrument Company Peristaltic pump
US5213483A (en) * 1991-06-19 1993-05-25 Strato Medical Corporation Peristaltic infusion pump with removable cassette and mechanically keyed tube set
US5846061A (en) * 1996-11-08 1998-12-08 Board Of Trustees Of Michigan State University Peristaltic metering pump
US7261008B2 (en) 1997-12-12 2007-08-28 Research International, Inc. Air sampler
US6484594B1 (en) 1997-12-12 2002-11-26 Research International, Inc. High efficiency a wetted surface cyclonic air sampler
US6532835B1 (en) 1997-12-12 2003-03-18 Research International, Inc. High efficiency wetted surface cyclonic air sampler
US20030115975A1 (en) * 1997-12-12 2003-06-26 Research Intertional, Inc. Air sampler
US20070058504A1 (en) * 2002-12-10 2007-03-15 Samsung Electronics Co., Ltd. Information storage medium and method of recording/reproducing the same
US20050047946A1 (en) * 2003-08-25 2005-03-03 Hewlett-Packard Development Company, L.P. Peristaltic pump
US7118203B2 (en) 2003-08-25 2006-10-10 Hewlett-Packard Development Company, L.P. Peristaltic pump
US20050053502A1 (en) * 2003-09-08 2005-03-10 Hewlett-Packard Development Company, L.P. Peristaltic pump
US7300264B2 (en) 2003-09-08 2007-11-27 Hewlett-Packard Development, L.P. Peristaltic pump
US20050238515A1 (en) * 2004-04-27 2005-10-27 Hewlett-Packard Development Company., L.P. Peristaltic pump
US8393879B2 (en) 2004-04-27 2013-03-12 Hewlett-Packard Development Company, L.P. Peristaltic pump
US20050238516A1 (en) * 2004-04-27 2005-10-27 Hewlett-Packard Development Company, Lp Peristaltic pump
US7591639B2 (en) 2004-04-27 2009-09-22 Hewlett-Packard Development Company, L.P. Peristaltic pump
US20070217932A1 (en) * 2004-06-22 2007-09-20 Claude Voyeux Method and system for providing adjustable compression force on a tube in a peristaltic pump
US11578716B2 (en) 2010-01-22 2023-02-14 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US9828984B2 (en) 2010-01-22 2017-11-28 Blue-White Industries, Ltd. High pressure, high flow rate peristaltic pump and tubing assembly
US11131300B2 (en) 2010-01-22 2021-09-28 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US20110180172A1 (en) * 2010-01-22 2011-07-28 Blu-White Industries, Inc. High pressure, high flow rate tubing assembly for a positive displacement pump
US11898546B2 (en) 2010-01-22 2024-02-13 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US9777720B2 (en) 2013-03-14 2017-10-03 Blue-White Industries, Ltd. High pressure, high flow rate tubing assembly and adapter for a positive displacement pump
US9909579B2 (en) 2014-06-09 2018-03-06 Blue-White Industries, Ltd. Overmolded tubing assembly and adapter for a positive displacement pump
US20180245579A1 (en) * 2015-09-11 2018-08-30 Watson-Marlow Limited Peristaltic Pump
US10724513B2 (en) * 2015-09-11 2020-07-28 Watson-Marlow Limited Peristaltic pump
US20220154711A1 (en) * 2019-03-15 2022-05-19 Nxstage Medical, Inc. Peristaltic Pump
CN117536714A (en) * 2024-01-10 2024-02-09 潍坊力创电子科技有限公司 Sleeve type air inlet device of internal combustion engine
CN117536714B (en) * 2024-01-10 2024-03-22 潍坊力创电子科技有限公司 Sleeve type air inlet device of internal combustion engine

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AT303530B (en) 1972-11-27
GB1335069A (en) 1973-10-24
DE2148468A1 (en) 1972-04-13
CA966722A (en) 1975-04-29
BE773545A (en) 1972-01-31
LU64026A1 (en) 1972-04-12
NL7113811A (en) 1972-04-11
CH539780A (en) 1973-07-31
FR2111145A5 (en) 1972-06-02

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