US20080085200A1 - Peristaltic Pump - Google Patents
Peristaltic Pump Download PDFInfo
- Publication number
- US20080085200A1 US20080085200A1 US11/574,646 US57464605A US2008085200A1 US 20080085200 A1 US20080085200 A1 US 20080085200A1 US 57464605 A US57464605 A US 57464605A US 2008085200 A1 US2008085200 A1 US 2008085200A1
- Authority
- US
- United States
- Prior art keywords
- tubing
- peristaltic pump
- pump according
- connecting element
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The peristaltic pump is provided with a two-piece housing (2, 3), in which a conveying member (1) as well as a pump tubing section (6) squeezable by the conveying member is received. For fixing the pump tubing section (6) in the housing (2, 3), a tubing holder (4) is provided. Further provided is a connecting element (5) provided with duct shaped connecting sockets (14 a, 14 b) for connecting tubing sections ( 15 a, 15 b). For connecting the pump tubing section ( 6) to the tubing holder (4), the two ends of the particular pump tubing section (6) are fixed in receptacles (10 a, 10 b) of the tubing holder ( 4), which positively enclose the outside of the pump tubing section (6). The connecting element (5) is fixed to the tubing holder (4) by means of a snap-on connection. Thereby, the connecting sockets (14 a, 14 b) thereof are sealingly connected to the particular pump tubing section ( 6).
Description
- The present invention relates to peristaltic pumps. Peristaltic pumps of the kind referred to herein are basically known. They are used for conveying different liquid and gaseous media.
- The document DE 198 14 943 A1 discloses a flexible tube pump of the kind referred to herein. The pump is provided with a pump housing in which is arranged the pump tubing as well as a rotor provided with two strangling means in the shape of rollers. In order to connect the two ends of the pump tubing to the connecting pipes and connecting ports, respectively, flange members are provided that are fixed by means of threaded bolts.
- One object of the present invention is to improve the design of a peristaltic pump in such a way that it can be manufactured at lower cost and in a simpler manner, and that the pump tubing can be replaced quickly and easily, if required.
- Due to the fact that the pump is provided with a tubing holder adapted to be fixed to the housing, to which the end of the pump tubing is fixed and comprising at least one connecting element having connecting sockets for fixing connecting tubes, whereby the connecting sockets are sealingly connected to the particular pump tubing upon fixing the connecting element to the tubing holder, the pump tubing can be connected to the tubing holder prior to assembling the pump. Thus, the tubing holder can be inserted, together with the pump tubing, into the tubing receptacle of the pump. In order to connect the pump tubing to the connecting tubes, thereafter, only the connecting element has to be fixed to the tubing holder. This is accomplished preferably by means of a snap-on connection.
- In the following, a preferred embodiment of the invention is further explained by means of drawings. In these drawings,
-
FIG. 1 shows an exploded view of the peristaltic pump; -
FIG. 2 shows a cross sectional view of a tubing holder, a connecting element as well as a pump tube section; -
FIG. 3 shows a cross sectional view of a tubing holder including the pump tube section connected thereto; -
FIG. 4 shows a cross sectional view of the tubing holder, the connecting element and the pump tube section in an assembled state; -
FIG. 5 shows a longitudinal sectional view of the elements ofFIG. 4 ; and -
FIG. 6 shows a cross sectional view of an alternative embodiment of a tubing holder as well as two connecting elements in an enlarged illustration. -
FIG. 1 shows a six channel peristaltic pump in an exploded view. Since peristaltic pumps of the kind referred to herein are basically known, in the following, the basic elements of the pump will be not addressed in detail, but only some of the components important in connection with the present invention. Essentially, the pump consists of a conveyingmember 1, anupper housing portion 2, alower housing portion 3, atubing holder 4 as well as of a connecting element, generally designated byreference numeral 5 and comprising a first connectingelement 5 a and a second connectingelement 5 b. Moreover, the pump comprises, in total, six pump tube sections, whereby only onepump tube section 6 is shown for the sake of clarity. - The
upper housing portion 2 is designed as a support frame member on which is supported, amongst others, the rotatingconveying member 1. The top side of theupper housing portion 2 is provided with asupport bar member 20. Thelower housing portion 3 is connected to the upper housing portion be means of a snap-on connection and serves for receiving and positively supporting the pump tubing. The conveyingmember 1 comprises ashaft 7 driven by an electric motor (not shown) and is provided with threeaxles 8 on which are rotatably received, in each case, several conveying rollers. - As one important element of the invention, a
tubing holder 4 is provided to fix the ends of six pump tube sections. To this end, thetubing holder 4 is provided with twelvereceptacles receptacles tubing holder 4 is provided with four elasticallyresilient brackets 11 to which the two connectingelements upper portion 2 thereof is provided with fourlatches 17 for fixing thetubing holder 4 to the housing. Moreover, evident from the drawing ofFIG. 1 is apositioning element 19 asymmetrically arranged on theupper portion 2 of the housing, adapted to engage an opening (not shown) of thetubing holder 4 to ensure a positionally correct assembly of thetubing holder 4 and theupper portion 2 of the housing. The final position of thetubing holder 4 at theupper portion 2 of the housing is determined by thelatches 17 as well as bystop members 12, the latter ones being provided on protrusions of theupper portion 2 of the housing. - The two connecting
elements shaped extension members sockets shaped extension members sockets continuous channel shaped extension members sockets tube sections FIG. 1 . The two connectingelements catch members brackets 11 of the connectingelement 5. Instead of two separate connectingelements shaped extension members sockets - The advantage of two separate connecting
elements top portion 2 of the housing even if the support bar is present. Moreover, advantages in manufacturing and costs are evident if two substantially equal elements can be manufactured instead of a single complicated element. The two connectingelements connecting elements tubing holder 4 can be provided, for example, withprotrusions 24 and the connectingelements - In the subsequent
FIGS. 2 to 5 , only thetubing holder 4, asingle tube section 6 and, if appropriate, the connectingelement 5 are shown. The illustration of further elements of the pump has been set aside.FIG. 2 shows, in a detailed illustration, thetubing holder 4, the two connectingelements pump tube section 6 in a cross sectional view. Besides the twobrackets 11, the hollowcylindrical receptacles tubing holder 4 can be seen. Thereceptacles portion particular ends pump tube sections 6. Although in the preferred embodiment the receptacles are defined as hollow cylindrical, the inside need not be absolutely cylindrical, but the inside diameter of the receptacles may preferably slightly decrease towards the top. In any case, the inner diameter of theparticular receptacle particular end pump tube section 6 is grasped in a positive fitting manner, i.e., without any substantial gap. In a conical design of thereceptacle particular end pump tube section 6 is slightly compressed towards its front face. By means of the design, i.e., the shape, of thereceptacles tubing holder 4, a positive or non-positive embracing of the pump tube section can be assured. Preferably, the two ends of thetubing particular receptacle -
FIG. 3 shows thepump tube section 6 fixed to thetubing holder 4, whereby, for the sake of clarity, the illustration of the brackets has been omitted. It is evident from this illustration that the two ends 6 a, 6 b of thepump tube section 6 are flush with thefront faces particular receptacle pump tube section 4 are cemented to thereceptacles tubing holder 4 and, thus positively fixed thereto. -
FIG. 4 shows a cross sectional view of thetubing holder 4, of the connectingelement 5 and of thepump tube section 6 in an assembled state. Upon fixing the connectingelement 5 to thetubing holder 4, the tubeshaped extension members element 5 penetrate the associatedend pump tube section 6 and establish a sealed connection between theparticular extension member pump tube section 6. Contributing to the sealed connection are both the shape of theextension members receptacles pump tube section particular receptacle pump tube section particular extension member extension members tubing holder 4 and connectingelement 5 can be easily released manually and re-established in a sealing manner, whereby this operation can be repeated several times, if appropriate. - From
FIG. 5 , showing a longitudinal sectional view of the elements ofFIG. 4 , namely thetubing holder 4, the connectingelement 5 and thepump tube section 6, it is particularly evident how thebrackets 11 of thetubing holder 4 fix the connectingelement 5 to thecatch members protrusions 24 arranged on the connectingelement 5, engaging correspondingrecesses 25 of thetubing holder 4 to correctly position the connectingelement 5 with regard to thetubing holder 4 and, thereby, also with regard to the housing of the pump. -
FIG. 6 shows a cross sectional view of an alternative embodiment of atubing holder 27 as well as of two connectingelements protrusion elements pump tube section 34, are provided with barb-like shoulders like shoulders pump tube section 34 and the assignedprotrusion receptacles tubing holder 27 each are provided with acylindrical recess receptacles cylindrical recess like shoulders receptacles like shoulders receptacles receptacles - The lower side of the
particular receptacle facet facets receptacle receptacle - The advantages of the pump described herein may be seen particularly in the fact that the pump tube sections can be pre-assembled remote from the pump itself, i.e., connected to the tubing holder. Such assembly step can be performed extensively automatedly and ensures advantages as far as assembly costs, precision and durability are concerned. Once the pump is assembled, only the two connecting elements provided with the pump tube sections have to be locked into place at the tubing holder in order to ensure that the pump is hydraulically ready for operation. Such a pump can be assembled, essentially without using any tools and with a few manual operations. If the outside of the
receptacles element 4 with thepump tube sections 6 cemented thereto as an unit. The aforementioned advantages are present both in one channel pumps and particularly in multi-channel pumps.
Claims (17)
1-13. (canceled)
14. Peristaltic pump, having a conveying member (1) received in a housing (2, 3), and having at least one flexible pump tube section (6) being squeezable by said conveying member (1) for peristalticly conveying a medium, said pump comprising a tubing holder (4) adapted to be attached to the housing (2) to which the pump tube section (6) is attached, said tubing holder (4) having at least one connecting element (5) for connecting tubing sections (15 a, 15 b) for fluid communication with the pump tube section (6), said at least one connecting element (5) including connecting sockets (14 a, 14 b) configured for sealing connection with the pump tube section (6) upon connecting the connecting element (5) to the pump tube section (6).
15. The peristaltic pump according to claim 14 , wherein said tubing holder (4) is provided with hollow cylindrical or conical receptacles (10 a, 10 b), to which corresponding end portions (6 a, 6 b) of the pump tubing section (6) are connected and positively and/or non-positively enclosed.
16. The peristaltic pump according to claim 15 , wherein said connecting element (5) is provided with duct shaped extension members (13 a, 13 b) that are configured to penetrate said corresponding end portions (6 a, 6 b) of the pump tubing section (6) and are further configured to radially load said end portions upon connecting the connecting element (5) to the tubing holder (4).
17. The peristaltic pump according to claim 16 , wherein said connecting element (5) is provided with connecting sockets (14 a, 14 b) for connecting tubing sections (15 a, 15 b) and with extension members (13 a, 13 b) for sealingly connecting the pump tubing section (6), whereby each of said connecting sockets (14 a, 14 b) communicates with a corresponding extension member (13 a, 13 b) through a corresponding continuous channel (18 a, 18 b).
18. The peristaltic pump according to claim 16 , wherein said duct-shaped extension members (29 a, 29 b) are provided with a smooth outside surface.
19. The peristaltic pump according to claim 16 , wherein said duct-shaped extensions (29 a, 29 b) are provided with barb-like shoulders (30 a, 30 b).
20. The peristaltic pump according to claim 14 , wherein said tubing holder (4) is attachable to the housing (2) by means of a quick-release connection.
21. The peristaltic pump according to claim 20 , wherein said quick-release connection includes a latch or snap-on connection.
22. The peristaltic pump according to claim 14 , wherein said connecting element (5) is attachable to the tubing holder (4) by means of a quick release connection.
23. The peristaltic pump according to claim 22 , wherein said quick-release connection is a latch or snap-on connection.
24. The peristaltic pump according to claim 14 , wherein said end portion (6 a, 6 b) of the particular pump tubing section (6) is cemented to the receptacle (10 a, 10 b).
25. The peristaltic pump according to claim 14 , wherein positioning elements (24, 25) are provided between said connecting element (5) and said tubing holder (4) for positioning said connecting element (5) relative to said tubing holder (4).
26. The peristaltic pump according to claim 14 , wherein the housing (2) is provided with at least one positioning element (19) to ensure a correct positional arrangement of the tubing holder (4) on the housing (2).
27. The peristaltic pump according to claim 14 , wherein said tubing holder (4) is provided with two parallel rows of receptacles (10 a, 10 b) for fixing several two or more pump tube sections, and further wherein two connecting elements (5 a, 5 b) are provided, a corresponding one of which is attachable to one of the parallel rows of receptacles (10 a, 10 b).
28. The peristaltic pump according to claim 27 , wherein said two connecting elements (5 a, 5 b) are of substantially identical configuration.
29. The peristaltic pump according to claim 27 , wherein said connecting elements (5 a, 5 b) are of different construction, and further wherein positioning elements are provided between the housing and a corresponding one of said connecting elements (5 a, 5 b), said positioning elements configured to ensure a correct positional arrangement of the particular connecting element (5 a, 5 b) with regard to the housing (2).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1462/04 | 2004-09-03 | ||
CH14622004 | 2004-09-03 | ||
PCT/CH2005/000522 WO2006024192A1 (en) | 2004-09-03 | 2005-09-02 | Peristaltic pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080085200A1 true US20080085200A1 (en) | 2008-04-10 |
Family
ID=35044712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/574,646 Abandoned US20080085200A1 (en) | 2004-09-03 | 2005-09-02 | Peristaltic Pump |
Country Status (3)
Country | Link |
---|---|
US (1) | US20080085200A1 (en) |
EP (1) | EP1784575A1 (en) |
WO (1) | WO2006024192A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110186143A1 (en) * | 2010-02-03 | 2011-08-04 | Seiko Epson Corporation | Fluid transporter |
EP2397695A1 (en) * | 2009-02-16 | 2011-12-21 | Nipro Corporation | Tube pump |
US20130315763A1 (en) * | 2012-05-24 | 2013-11-28 | Cook Medical Technologies Llc | Peristaltic pump tubing securing system |
USD773037S1 (en) | 2010-05-03 | 2016-11-29 | Medical Vision Ab | Cassette for a peristaltic pump |
US9518576B1 (en) * | 2010-07-15 | 2016-12-13 | Elemental Scientific, Inc. | Peristaltic pump |
USD809909S1 (en) | 2013-03-15 | 2018-02-13 | Cook Medical Technologies Llc | Tubing clips |
US10813468B1 (en) * | 2008-07-30 | 2020-10-27 | Youngblood Ip Holdings, Llc | Multi-zone temperature modulation system for bed or blanket |
US20220074405A1 (en) * | 2020-09-08 | 2022-03-10 | Integra Biosciences Ag | Dispenser cassette for use in a peristaltic pump |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2740879T3 (en) * | 2015-12-24 | 2020-02-06 | Hologic Inc | Uterine distention fluid management system with peristaltic pumps |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3079868A (en) * | 1960-11-25 | 1963-03-05 | Thomas F Ormsby | Flexible hose pump |
US3658445A (en) * | 1969-06-12 | 1972-04-25 | Prockter T Pulman | Pumps |
US3711130A (en) * | 1970-11-09 | 1973-01-16 | Air Prod & Chem | Ferruleless barbed tubing connector |
US4116476A (en) * | 1977-11-11 | 1978-09-26 | Porter Gary K | Quick disconnect coupler assembly |
US4861242A (en) * | 1987-08-19 | 1989-08-29 | Cobe Laboratories, Inc. | Self-loading peristaltic pump |
US4976590A (en) * | 1988-06-08 | 1990-12-11 | Baldwin Brian E | Fluid conduit-responsively adjustable pump arrangement and pump/conduit arrangement and method, and fluid conduits therefor |
US5350284A (en) * | 1992-05-11 | 1994-09-27 | Allweiler Ag | Peristaltic pump |
US5405339A (en) * | 1993-09-03 | 1995-04-11 | Medtronic, Inc. | Medical connector and method for connecting medical tubing |
US5518378A (en) * | 1992-04-30 | 1996-05-21 | Debiotec S.A. | Cassette-type peristaltique pump fitted with an undeceitful assembly |
US5846061A (en) * | 1996-11-08 | 1998-12-08 | Board Of Trustees Of Michigan State University | Peristaltic metering pump |
US20040027410A1 (en) * | 2002-08-09 | 2004-02-12 | Canon Kubushiki Kaisha | Tube pump, discharge recovering apparatus and ink jet recording apparatus |
US20050047946A1 (en) * | 2003-08-25 | 2005-03-03 | Hewlett-Packard Development Company, L.P. | Peristaltic pump |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3703124A1 (en) * | 1987-02-03 | 1988-08-11 | Manfred Streicher | HOSE PUMP |
DE4214917A1 (en) * | 1992-05-11 | 1993-11-18 | Allweiler Ag | Peristaltic pump |
-
2005
- 2005-09-02 US US11/574,646 patent/US20080085200A1/en not_active Abandoned
- 2005-09-02 WO PCT/CH2005/000522 patent/WO2006024192A1/en not_active Application Discontinuation
- 2005-09-02 EP EP05775754A patent/EP1784575A1/en not_active Withdrawn
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3079868A (en) * | 1960-11-25 | 1963-03-05 | Thomas F Ormsby | Flexible hose pump |
US3658445A (en) * | 1969-06-12 | 1972-04-25 | Prockter T Pulman | Pumps |
US3711130A (en) * | 1970-11-09 | 1973-01-16 | Air Prod & Chem | Ferruleless barbed tubing connector |
US4116476A (en) * | 1977-11-11 | 1978-09-26 | Porter Gary K | Quick disconnect coupler assembly |
US4861242A (en) * | 1987-08-19 | 1989-08-29 | Cobe Laboratories, Inc. | Self-loading peristaltic pump |
US4976590A (en) * | 1988-06-08 | 1990-12-11 | Baldwin Brian E | Fluid conduit-responsively adjustable pump arrangement and pump/conduit arrangement and method, and fluid conduits therefor |
US5518378A (en) * | 1992-04-30 | 1996-05-21 | Debiotec S.A. | Cassette-type peristaltique pump fitted with an undeceitful assembly |
US5350284A (en) * | 1992-05-11 | 1994-09-27 | Allweiler Ag | Peristaltic pump |
US5405339A (en) * | 1993-09-03 | 1995-04-11 | Medtronic, Inc. | Medical connector and method for connecting medical tubing |
US5846061A (en) * | 1996-11-08 | 1998-12-08 | Board Of Trustees Of Michigan State University | Peristaltic metering pump |
US20040027410A1 (en) * | 2002-08-09 | 2004-02-12 | Canon Kubushiki Kaisha | Tube pump, discharge recovering apparatus and ink jet recording apparatus |
US20050047946A1 (en) * | 2003-08-25 | 2005-03-03 | Hewlett-Packard Development Company, L.P. | Peristaltic pump |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10813468B1 (en) * | 2008-07-30 | 2020-10-27 | Youngblood Ip Holdings, Llc | Multi-zone temperature modulation system for bed or blanket |
US11583096B1 (en) * | 2008-07-30 | 2023-02-21 | Sleepme Inc. | Multi-zone temperature modulation system for bed or blanket |
US11324330B1 (en) * | 2008-07-30 | 2022-05-10 | Sleepme Inc. | Multi-zone temperature modulation system for bed or blanket |
US11147389B1 (en) * | 2008-07-30 | 2021-10-19 | Kryo, Inc. | Multi-zone temperature modulation system for bed or blanket |
US10986934B1 (en) * | 2008-07-30 | 2021-04-27 | Kryo, Inc. | Multi-zone temperature modulation system for bed or blanket |
EP2397695A1 (en) * | 2009-02-16 | 2011-12-21 | Nipro Corporation | Tube pump |
EP2397695A4 (en) * | 2009-02-16 | 2013-05-08 | Nipro Corp | Tube pump |
US20110186143A1 (en) * | 2010-02-03 | 2011-08-04 | Seiko Epson Corporation | Fluid transporter |
USD773037S1 (en) | 2010-05-03 | 2016-11-29 | Medical Vision Ab | Cassette for a peristaltic pump |
US10830227B2 (en) * | 2010-07-15 | 2020-11-10 | Elemental Scientific, Inc. | Peristaltic pump |
US20190353158A1 (en) * | 2010-07-15 | 2019-11-21 | Elemental Scientific Inc. | Peristaltic pump |
US10309389B1 (en) * | 2010-07-15 | 2019-06-04 | Elemental Scientific, Inc. | Peristaltic pump |
US9863413B1 (en) * | 2010-07-15 | 2018-01-09 | Elemental Scientific, Inc. | Peristaltic pump |
US9518576B1 (en) * | 2010-07-15 | 2016-12-13 | Elemental Scientific, Inc. | Peristaltic pump |
US10113542B2 (en) * | 2012-05-24 | 2018-10-30 | Cook Medical Technologies Llc | Peristaltic pump tubing securing system |
US20130315763A1 (en) * | 2012-05-24 | 2013-11-28 | Cook Medical Technologies Llc | Peristaltic pump tubing securing system |
USD809909S1 (en) | 2013-03-15 | 2018-02-13 | Cook Medical Technologies Llc | Tubing clips |
US20220074405A1 (en) * | 2020-09-08 | 2022-03-10 | Integra Biosciences Ag | Dispenser cassette for use in a peristaltic pump |
US11933288B2 (en) * | 2020-09-08 | 2024-03-19 | Integra Biosciences Ag | Dispenser cassette for use in a peristaltic pump |
Also Published As
Publication number | Publication date |
---|---|
EP1784575A1 (en) | 2007-05-16 |
WO2006024192A1 (en) | 2006-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ISMATEC SA LABORATORIUMSTECHNIK, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MICHELS, STEPHAN;CARR, CHARLES;IMBODEN, DAVID;REEL/FRAME:019985/0271;SIGNING DATES FROM 20070212 TO 20070301 |
|
AS | Assignment |
Owner name: MICROPUMP, INC., WASHINGTON Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ISMATEC S.A. LABORATORIUMSTECHNIK;REEL/FRAME:023549/0612 Effective date: 20081218 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |