中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.021 seconds)

    PINCH VALVE
    4.
    发明专利
    PINCH VALVE 未知

    公开(公告)号：CA1021758A

    公开(公告)日：1977-11-29

    申请号：CA205637

    申请日：1974-07-25

    Applicant: COULTER ELECTRONICS

    Inventor： GINSBERG GUENTER ,  GODIN THOMAS J ,  SIMPSON RONALD O

    IPC: F04B7/02 ,  F04B9/12 ,  F16K7/06 ,  F16K11/02 ,  G01F11/02 ,  G01F15/00

    Abstract: A pneumatically controlled liquid transfer system for delivering a liquid from a source to a delivery location, said liquid source being provided with a pneumatic cylinder for driving the liquid from said source, a pneumatically operated pinch valve of the make-before-break type and flexible conduit paths leading through the valve to the delivery location. The make-before-break pinch valve comprises a valve shell having two pistons movable laterally therein. The shell has a window. One piston has a yoke, each arm thereof having a passageway, one aligned with the other. A stop extends between the arms of the yoke. One of the flexible conduits is arranged through the window between the first piston and the yoke and the other flexible conduit is arranged also through the window but within the aligned passageways and between the piston and post. The second piston is spring biased to bear against the second conduit to place same in a normally closed condition. The first conduit is normally open. The first piston is acted upon by an external force such as air pressure to move same to a first condition wherein the piston pinches the first flexible conduit against the yoke, closing said conduit without overcoming the bias of the second piston to open the second conduit. Continued force exercised upon said first piston causes the same to move laterally within the housing to a second condition overcoming the spring bias of the second piston, to open the second conduit while the first conduit is retained in closed position. The second piston by virtue of its spring bias, will force the yoke back into its first position once the pressure on the first piston is relaxed. A manual override is provided operative upon the second piston to lock the same in open condition so that both conduits are open. This last mentioned position is utilized during down time of the apparatus concerned.

    APERTURE MODULE FOR USE IN PARTICLE TESTING APPARATUS
    5.
    发明专利
    APERTURE MODULE FOR USE IN PARTICLE TESTING APPARATUS 未知

    公开(公告)号：CA1090424A

    公开(公告)日：1980-11-25

    申请号：CA296820

    申请日：1978-02-13

    Applicant: COULTER ELECTRONICS

    Inventor： SIMPSON RONALD O ,  STARLING J DAVID ,  JAMES BOBBY D ,  GODIN THOMAS J ,  GINSBERG GUENTER ,  DRBAL VLADIMIR J

    IPC: G01N15/12 ,  G01N27/02

    Abstract: An aperture module for obtaining signals from microscopic particles suspended in a sample blood solution which passes through a scanning aperture. A module housing including an aperture holder is mounted on a container or bath containing a body of the particulate liquid suspension to be tested. The aperture holder with aperture formed therein extends into the vessel to permit passage of the sample through the aperture to an outlet chamber immediately behind the aperture. The chamber is connected to a source of clean electrolyte and has a narrowed or reduced dimension portion positioned immediately behind the aperture. A vacuum is applied to the chamber to cause the sample to be drawn through the aperture for testing thereof. An optical hemoglobinometer is positioned in association with the bath to measure the hemoglobin content of the solution to be tested.

    BACKWASH SYSTEM FOR DILUTING APPARATUS
    6.
    发明专利
    BACKWASH SYSTEM FOR DILUTING APPARATUS 未知

    公开(公告)号：CA1117314A

    公开(公告)日：1982-02-02

    申请号：CA327516

    申请日：1979-05-14

    Applicant: COULTER ELECTRONICS

    Inventor： SIMPSON RONALD O ,  CABRERA PEDRO

    IPC: G01N1/00 ,  G01N1/38 ,  G01N35/10 ,  G01N1/10

    Abstract: A backwash system of the general character described wherein a rinse fluid is driven back as backwash along the same path taken by sample from a sample probe, to be discharged to a receptacle sealingly coupled to said sample probe. One or both of the receptacle and the delivery end of the sample probe is movable along a predetermined path to a first condition proximate one another and a second condition sealingly engaged one with the other. A switch is provided engageable by one of the movable members for sensing the establishment of the sealed condition and preventing premature feeding to discharge said rinse fluid from said delivery end. Movement to the first and second conditions can be in stages or continuous.

Patent Agency Ranking