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    MICROSPECTROPHOTOMETER
    61.
    发明专利
    MICROSPECTROPHOTOMETER 未知

    公开(公告)号：CA972183A

    公开(公告)日：1975-08-05

    申请号：CA164480

    申请日：1973-02-23

    Applicant: MICROMEDIC SYSTEMS INC

    Inventor： SANZ MANUEL C ,  REVILLET GEORGES ,  JOHNSON EDGAR G JR

    IPC: G01N21/03

    Abstract: The present invention is concerned with a spectrophotometer useful for determining light transmission of microsamples. It is particularly concerned with a spectrophotometer system using an improved microcuvette and extremely small optical elements for providing and acting upon the light beam that is used in determining the light-transmission characteristics of the sample. It is more particularly concerned with a double-cavity cuvette for receiving in one of the cavities of the cuvette a comparison or reference material and, in the other, the sample to be measured. Even more particularly it is concerned with a double-cavity micro-cuvette particularly adapted for utilizing a shifted-beam light system in which the beam is alternately refracted in different directions to direct it alternately through one cavity and then the other.

    AUTOMATIC SAMPLING AND DISPENSING APPARATUS
    62.
    发明专利
    AUTOMATIC SAMPLING AND DISPENSING APPARATUS 未知

    公开(公告)号：GB1399610A

    公开(公告)日：1975-07-02

    申请号：GB2703272

    申请日：1972-06-09

    Applicant: MICROMEDIC SYSTEMS INC

    IPC: B01L9/06 ,  G01N35/10 ,  G01N1/14 ,  G01N21/24 ,  G01N33/16

    Abstract: 1399610 Automatic analysis MICROMEDIC SYSTEMS Inc 9 June 1972 [11 June 1971] 27032/72 Heading G1B Apparatus for processing racks, Fig. 1, each having in use a row of sample-containing tubes T1 and an adjacent row of tubes T2 which may contain reagent, comprises a base 2 having a supporting surface 4 divided into a rack-loading area (as shown, behind retractable guide arm 12), a rack advancement area and a rack ejection area, a device which may include teeth 51 to advance a rack along a linear path from an initial position adjacent the rack loading area to a final position adjacent the ejection area, a liquid sampling device which includes an aspirating and dispensing tip device in communication with conduit means and housed above the linear path (at 28), a tip-moving device comprising means for shifting the tip to and fro between two positions, one over a tube T1 and one over the corresponding tube T2, and means for raising and lowering the tip in a straight line at each of the two positions, rack-ejection means 54, 55 adjacent the final position for ejecting a processed rack from the path in a direction transverse to the path, means for feeding racks in the loading area successively into the initial position of the path by moving racks in a direction opposite to that of ejection, and control means for co-ordinating operation of the liquid sampling and dispensing device, the rack advancement device, the tip moving device the rack feeding means and the rack ejection means. The tip (not shown) may be mounted in a holder 100 slidable between upper and lower positions on support rods (99'), Fig. 2 the tip holder 100 and a crossslide 115, 116 being connected by rods 105, 105 and the cross-slide being moved on movement of circular cam 118 in longitudinal slot 117 in the cross-slide cam 118 being mounted on a crank 90 which is itself mounted at 87-89 for rotation in either direction by shaft 85. The means for shifting the tip to and fro comprises cylindrical cam 216 having two cam tracks (246), 248, Figs. 10a, b, c (not shown), two spring-loaded cam followers 263 travelling in the lower parts of respective escape cylinders 259, 266 and dropping alternately into their respective tracks as toggle mechanism 268 operates and so providing to and fro movement longitudinally of the upper part of support rods (99 ), 99". The apparatus may include means for wiping the tip after use on freshly presented faces of a wiper tape which travels around reels (360, 361), 362, 366 which are mounted on a slotted wiper tape tray which can be drawn out of housing 16 to a position between the support rods 99', 99 and tubes T1, T2 Fig. 8 (not shown). The tape passes over each of two sponge rubber pads (137, 137') mounted on spring loaded arms (131), 131 one at each side of the tip, the pads being movable to press the tape against the tip as the tip is being retracted from a tube. The apparatus may include one or more auxiliary pipettes for introduction of reagent into the tubes.

    64.
    发明专利
    未知

    公开(公告)号：IT980916B

    公开(公告)日：1974-10-10

    申请号：IT6817873

    申请日：1973-04-27

    Applicant: MICROMEDIC SYSTEMS INC

    IPC: G01N35/10 ,  G01N1/00 ,  B01L

    Abstract: 1435374 Discharging liquids by gaseous pressure MICROMEDIC SYSTEMS Inc 25 April 1973 [1 May 1972] 19565/73 Heading F1R [Also in Division G1] Liquid is transferred from a vessel 18 through a dip tube 22 by applying air-pressure to the vessel through an opening 82 so that the flow of air passes over the dip tube to clean it. Air is supplied to a chamber 78 in a head 54 and through which the tube 22 passes and flows to the opening 82 and also to an opening 74. The vessel 18 is mounted on a guide which is raised to cause the mouth of the vessel to seat on a seal 62 in the head 54. Further raising causes the mouth of the opening 74 to engage a seal 72 on a plate 70 and the dip tube to enter the vessel. The quantity of liquid discharged may be controlled by a solenoid actuated valve (26) Fig. 6 (not shown) controlled by a timing device (108) started when a rise in pressure in the vessel due to closing of the opening 74 is detected. In a modification, Fig. 5, a crank mechanism 146 operates a slide 142 round which the dip tube 152 is looped so that the tube is inserted into the vessel 120 in a separate operation. As described the apparatus comprises pairs of vessels and duplicate discharge arrangements.

    DISTRIBUTOR PUMP
    69.
    发明专利
    DISTRIBUTOR PUMP 未知

    公开(公告)号：GB1281353A

    公开(公告)日：1972-07-12

    申请号：GB4090069

    申请日：1969-08-15

    Applicant: MICROMEDIC SYSTEMS INC

    IPC: A61B5/155 ,  B01L3/00 ,  B01L3/02 ,  F04B7/00 ,  F04B53/00 ,  G01N1/00 ,  G01N1/18

    Abstract: 1281353 Reciprocating pumps MICROMEDIC SYSTEMS Inc 15 Aug 1969 [16 Aug 1968] 40900/69 Heading F1A A pump, e. g. for metering liquids in laboratories, comprises a piston 3 reciprocable in a cylinder 1 in synchronism with a rotary face valve 6 driven by a wheel 72, the cylinder 1, valve 6 and a coupling member 30 being mounted in a casing 37, 38 which is removably mounted by bayonet pins 50, 51 in bayonet slots 53, 54 in a ring 55 pivoted in a frame 59, a releasable locking pin, Fig. 4 (not shown), preventing rotation of the casing in the ring. A spring 34 biases valve member 6 against valve seat 5 to provide sealing when the casing is detached from the frame, additional spring-loading during operation being provided by spring 63 acting through ball 60 and coupling member 30. Valve 6 may be of P. T. F. E. and has grooves 25, 26 for alternately connecting cylinder port 12 to inlet and outlet ports 20 in seat 5, Figs. 2 and 3 (not shown). The grooves 25, 26 may be arranged in the form of a cross, or may be arcuate. Coupling member 30 has sawtooth projections, Figs. 4 and 5 (not shown), for engaging drive pins 70, 71 of wheel 72. The locking pin passes through one of the trunnions supporting ring 55 and is spring-loaded into an axial slot in casing 38, a bevel 69 depressing the pin for entry of the casing into the ring.

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