2.
    发明专利
    未知

    公开(公告)号:SE371863B

    公开(公告)日:1974-12-02

    申请号:SE1167071

    申请日:1971-09-14

    Abstract: 1339807 Mixing liquids; automatic analysis TECHNICON INSTRUMENTS CORP 25 Aug 1971 [14 Sept 1970] 39960/71 Headings B1C and B1X [Also in Division B8] In apparatus primarily for the colorimetric analysis of blood serum samples, a peristaltic pump 10 is associated with a sampling dip tube 20, an indexing turntable carrying sample containers 16, and a wash liquid container 24, which produce a flow of segments of sample liquid S and wash liquid W separated by air segment A. The pulsations caused by occlusion of the pump tube 36 by the roller 50B will travel along the tube to cause irregularity at the dip tube inlet. This may be arranged to occur at the stage when it causes least disturbance (which is during the intake of the sample which is large in comparison with the wash liquid and air segments) by arranging the flow path to be of suitable length or, as described, by suitable synchronisation of the pump with the dip tube movements. The sample segments are arranged to arrive at the junction 90 simultaneously with reagent segments from the tube 88. The pulsations caused by the roller 50A ceasing to occlude the pump tube are arranged to arrive at the junction 90 simultaneously with an air segment by suitably adjusting the length of the flow path. This minimises change in the sample/reagent proportions or at least restricts any change to the beginning or end part of the sample portion where it is least likely to affect accuracy of colorimetry.

    4.
    发明专利
    未知

    公开(公告)号:BE752267A

    公开(公告)日:1970-12-21

    申请号:BE752267D

    申请日:1970-06-19

    Inventor: ISREELI J KASSEL A

    Abstract: 1,265,139. Supplying fluid samples. TECHNICON INSTRUMENTS CORP. 16 June, 1970 [20 June, 1969], No. 29137/70. Heading B8N. A flow control system for supplying fluid samples, e.g. of corrosive liquids, comprises sample storage means 32, 39, means 62 for pumping samples into the storage means 32, 39, means 68, 70 for pumping the samples out of the storage means 32, 39 at a substantially constant flow rate, and means 30 for transferring the storage means 32, 39 between operative connection with either pumping means, there being additionally means to introduce a bubble of air to the sample storage means during transfer. In an initial position, Fig. 2, the pump means 62, e.g. a vacuum pump, draws fluid from a sample cup 14a through a take-off tube 20 and conduit 12, coils 34, 36 of one storage means unit 32 being connected to the conduit 12 and a pump flow resistance coil 60 by bores (76), 80, (88), Fig. 3 (not shown), of a fixed lower valve plate 26. When the coils 34, 36 have been filled, an upper valve plate 28 supporting them is rotated through 90 degrees by the operating means 30, bores 78, 82-86 aligning with ports 108-114. Compressed air from a line 64 partially expels the sample through a conduit 66, leaving air bubbles in the coils 34, 36, and on rotating the plate through a further 90 degrees, Fig. 4 (not shown), cf. Fig. 2, the bores 78, 82-86 align with lower valve plate passages (92), (96), (102), (106), Fig. 3 (not shown). Silicone oil pilot fluid is then pumped through inlet conduits 68, 70, the sample fluid in the coils 34, 36, separated from the oil by the air bubbles, being ejected through lines 72, 74 to analysing means (not shown). On rotating the plate 28 to its initial position, the take-off tube 20 is connected to a washing liquid reservoir 22, operation of the pump 62 flushing out the storage means 32. Two sets of storage means 32, 39 are provided for concurrent operation, a sample supply device providing a series of samples in turn.

    6.
    发明专利
    未知

    公开(公告)号:SE310801B

    公开(公告)日:1969-05-12

    申请号:SE484463

    申请日:1963-05-02

    Abstract: 1,012,065. Colorimetric flow cells. TECHNICON INSTRUMENTS CORPORATION. April 19, 1963 [May 3, 1963; Oct. 18, 1962], No. 15472/63. Heading G2J. A flow cell for use in measuring the light transmitting characteristics of a liquid as it flows through the cell, has a tubular body 22, spaced light permeable end walls a liquid inlet 32 adjacent are end wall and a liquid outlet 34 adjacent the other end wall. The inlet and outlet are joined to the body in such a manner that any bubbles of gas entering the inlet are prevented from accumulating in the body. The flow cell may be supported in a holder 10 comprising a body 42 having a slot 44 between walls 46, and extensions 48 and 52 are engaged in corresponding slots in a colorimeter. The cell is mounted in the holder by cementing the tube 34 to the holder at 70 and cementing a rod 72, secured to the cell, to the holder at 74.

    7.
    发明专利
    未知

    公开(公告)号:SE377379B

    公开(公告)日:1975-06-30

    申请号:SE858670

    申请日:1970-06-22

    Inventor: ISREELI J KASSEL A

    Abstract: 1,265,139. Supplying fluid samples. TECHNICON INSTRUMENTS CORP. 16 June, 1970 [20 June, 1969], No. 29137/70. Heading B8N. A flow control system for supplying fluid samples, e.g. of corrosive liquids, comprises sample storage means 32, 39, means 62 for pumping samples into the storage means 32, 39, means 68, 70 for pumping the samples out of the storage means 32, 39 at a substantially constant flow rate, and means 30 for transferring the storage means 32, 39 between operative connection with either pumping means, there being additionally means to introduce a bubble of air to the sample storage means during transfer. In an initial position, Fig. 2, the pump means 62, e.g. a vacuum pump, draws fluid from a sample cup 14a through a take-off tube 20 and conduit 12, coils 34, 36 of one storage means unit 32 being connected to the conduit 12 and a pump flow resistance coil 60 by bores (76), 80, (88), Fig. 3 (not shown), of a fixed lower valve plate 26. When the coils 34, 36 have been filled, an upper valve plate 28 supporting them is rotated through 90 degrees by the operating means 30, bores 78, 82-86 aligning with ports 108-114. Compressed air from a line 64 partially expels the sample through a conduit 66, leaving air bubbles in the coils 34, 36, and on rotating the plate through a further 90 degrees, Fig. 4 (not shown), cf. Fig. 2, the bores 78, 82-86 align with lower valve plate passages (92), (96), (102), (106), Fig. 3 (not shown). Silicone oil pilot fluid is then pumped through inlet conduits 68, 70, the sample fluid in the coils 34, 36, separated from the oil by the air bubbles, being ejected through lines 72, 74 to analysing means (not shown). On rotating the plate 28 to its initial position, the take-off tube 20 is connected to a washing liquid reservoir 22, operation of the pump 62 flushing out the storage means 32. Two sets of storage means 32, 39 are provided for concurrent operation, a sample supply device providing a series of samples in turn.

    METHOD FOR THE MINIMIZATION OF THE EFFECTS OF PULSATIONS IN INTERMITTENT PUMPING SYSTEMS

    公开(公告)号:CA938194A

    公开(公告)日:1973-12-11

    申请号:CA122230

    申请日:1971-09-07

    Abstract: 1339807 Mixing liquids; automatic analysis TECHNICON INSTRUMENTS CORP 25 Aug 1971 [14 Sept 1970] 39960/71 Headings B1C and B1X [Also in Division B8] In apparatus primarily for the colorimetric analysis of blood serum samples, a peristaltic pump 10 is associated with a sampling dip tube 20, an indexing turntable carrying sample containers 16, and a wash liquid container 24, which produce a flow of segments of sample liquid S and wash liquid W separated by air segment A. The pulsations caused by occlusion of the pump tube 36 by the roller 50B will travel along the tube to cause irregularity at the dip tube inlet. This may be arranged to occur at the stage when it causes least disturbance (which is during the intake of the sample which is large in comparison with the wash liquid and air segments) by arranging the flow path to be of suitable length or, as described, by suitable synchronisation of the pump with the dip tube movements. The sample segments are arranged to arrive at the junction 90 simultaneously with reagent segments from the tube 88. The pulsations caused by the roller 50A ceasing to occlude the pump tube are arranged to arrive at the junction 90 simultaneously with an air segment by suitably adjusting the length of the flow path. This minimises change in the sample/reagent proportions or at least restricts any change to the beginning or end part of the sample portion where it is least likely to affect accuracy of colorimetry.

    9.
    发明专利
    未知

    公开(公告)号:SE361071B

    公开(公告)日:1973-10-15

    申请号:SE956770

    申请日:1970-07-09

    Inventor: ISREELI J KASSEL A

    Abstract: 1,270,509. Regulating fluid-flow. TECHNICON INSTRUMENTS CORP. July 7, 1970 [July 14, 1969], No.32871/70. Heading G3H. [Also in Division F1] Controlling the flow-rate through a flexible tube 86, is effected by passing fluid through the tube, monitoring the flow-rate, and longitudinally stretching the tube until the flow-rate therethrough corresponds to that desired. The tube is placed upon a mounting frame whose opposed sides 82, 84 have hemi-spherical recesses formed therein. A nipple 38 carried by the tube and abutting frame side 82 inhibits displacement of the left-hand end of the tube, as seen in the drawing. Means are then applied to the free end of the tube for stretching the latter, the means preferably being in the form of a two-arm clamp, Fig. 5 (not shown), having a hemi-spherical recess formed adjacent the terminal portion of each arm. Subsequent to attaining the desired flow-rate, a movement restricting nipple 38 is applied to the tube free end for engagement with the frame side 84, Fig. 7, (not shown).

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