Abstract:
A separator for separating multiphase fluid streams. The separator includes inlet and outlet means having wettable means positioned within the inlet means to direct the fluid to the outlet means.
Abstract:
A flow cell structure having a sight passageway for analyzing a series of liquid samples separated by a segmentizing medium, e.g. air or other inert gas, includes at least three electrodes in electrical contact with the segmented sample stream passing therealong. The electrodes are disposed with respect to the sight passageway and in a ratio system, so as to indicate the presence of segmentizing medium in the sight passageway and deactivate the recorder.
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.
Abstract:
1301556 Automatic analysis TECHNICON INSTRUMENTS CORP 17 July 1970 [25 July 1969] 34867/70 Heading B1X Samples from container 16 are analysed by a method comprising passing the samples in succession along a flow path 28 which includes an analysis means, passing a second liquid stream from a flask 124 through flow path 30, introducing primary segments AS, AR of separating fluid into the two streams and introducing secondary segments of separating fluid into spaced ones of the primary segments to create enlarged separating segments, the introduction of the secondary segments into the two flow paths being in timed relation. In the embodiment shown, air segments AS are introduced through tube 35 into the segmented sample stream in tube 34 prior to production of enlarged segments ASD at the junction of tubes 34 and 40. Air segments AR are similarly added through tube 37 to the second (dialysing liquid) stream 42. When a segment ASD reaches infra-red detector 100, a signal passed to delay timer 114 operates valve 46 after a predetermined time to produce a segment ASR, of substantially the same length as the segment ASD, in the dialysing liquid stream. The streams then pass through respective sides of dialyser 50, are optionally mixed with reagents, and pass through respective debubblers 56, 60 which remove all gas segments except ASD, ASR segments and remove part of the segments ASD, ASR; the streams then flow through colorimeters 68, 70. When the samples are blood samples, the total protein and calcium constituents of the respective streams may be measured.
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.
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.
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).