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公开(公告)号：CA1313105C
公开(公告)日：1993-01-26
申请号：CA614890
申请日：1989-09-29
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P , ESTOQUE DANIEL A
Abstract: A liquid metering and transfer valve assembly for a diluting system which includes a pair of stationary outer valve disc elements sandwiching a central rotatable valve disc element. The elements are coaxially aligned and mounted on a spindle. One of the outer elements has a first external loop secured thereto, said loop having a precise interior volume. An aspirator probe 18 secured to the central element. The central element carries an axial segmenting passageway having a precise interior volume. A second external loop is secured to the central element. The second loop extends outwardly, preferably radially, of said element and has a precise interior volume. Appropriate interior passageways are provided in the outer elements for directing a liquid sample in a continuous path through the valve assembly, the path including the one segmenting passageway and the first and second loops. Additional interior passageways are provided for coupling the valve assembly to sources of diluent and to exterior destinations. The central element is rotated to isolate the contents of the segmenting passageway and of the first and the second loops and diluent is fed thereto to drive the isolated contents thereof to said destinations. Only a single loading step is required to obtain three precise volumes of liquid sample. The valve assembly can be rinsed and continuous internal channels are provided for preventing any liquid from reaching the circumferential surfaces of the valve assembly.
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公开(公告)号：AU5867986A
公开(公告)日：1987-01-13
申请号：AU5867986
申请日：1986-04-25
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P
Abstract: A molded flexible fluid conduit and a make/before break pinch valve including a slidably movable pressure member spring biased normally against said conduit in closed condition of the valve, said conduit including a pair of elongate longitudinal unitary purchase formations capable of cooperating with slots carried by the valve whereby the conduit forcibly is pulled or stretched in diametrically opposed directions upon actuation of the valve subsequent to periods of closure so as to force the conduit open to permit flow.
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公开(公告)号：CA1279056C
公开(公告)日：1991-01-15
申请号：CA508324
申请日：1986-05-02
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P , TALBOT GLENN D
Abstract: A molded flexible fluid conduit and a make/before break pinch valve including a slidably movable pressure member spring biased normally against said conduit in closed condition of the valve, said conduit including a pair of elongate longitudinal unitary purchase formations capable of cooperating with slots carried by the valve whereby the conduit forcibly is pulled or stretched in diametrically opposed directions upon actuation of the valve subsequent to periods of closure so as to force the conduit open to permit flow.
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4.发明专利
公开(公告)号：CA1125740A
公开(公告)日：1982-06-15
申请号：CA317940
申请日：1978-12-14
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P , DUNCAN ROBERT T
Abstract: METHOD AND APPARATUS FOR REGULATING THE SIZE AND FREQUENCY OF BUBBLES EMPLOYED FOR MIXING LIQUIDS A few large, fast rising gas bubbles are generated near the bottom of a sample container and the upward movement of the bubbles causes a mixing action of the sample. The bubbles result from the periodic injection of discrete quantums of gas into the bottom of the container. The volume of a discrete gas quantum determines the size of a resulting bubble. Both the volume and frequency of generation of the quantums of gas are controlled by a timing circuit which operates a solenoid valve that permits each discrete quantum of gas to pass into the sample container.
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公开(公告)号：DE2919374A1
公开(公告)日：1979-11-22
申请号：DE2919374
申请日：1979-05-14
Applicant: COULTER ELECTRONICS
Inventor： SIMPSON RONALD O , CABRERA PEDRO P
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Patent Agency Ranking
公开(公告)号：CA1279775C
公开(公告)日：1991-02-05
申请号：CA527414
申请日：1987-01-15
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P , BERRA HUMBERTO A , DOTY EDWARD N
Abstract: A liquid diluting and transfer valve having disc like valve elements provided with faces frictionally engaged and further including passageways for passing both sample liquid and rinse liquid, a continuous groove formed in one of the respective faces for effectively isolating the passageway openings to said faces, said groove capable of blocking passage of leakage material along the face to the periphery of the engaged face.
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公开(公告)号：AU583628B2
公开(公告)日：1989-05-04
申请号：AU5867986
申请日：1986-04-25
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P , TALBOT GLENN D
Abstract: A molded flexible fluid conduit and a make/before break pinch valve including a slidably movable pressure member spring biased normally against said conduit in closed condition of the valve, said conduit including a pair of elongate longitudinal unitary purchase formations capable of cooperating with slots carried by the valve whereby the conduit forcibly is pulled or stretched in diametrically opposed directions upon actuation of the valve subsequent to periods of closure so as to force the conduit open to permit flow.
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公开(公告)号：CA1184788A
公开(公告)日：1985-04-02
申请号：CA413600
申请日：1982-10-18
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P
Abstract: This invention relates to a hydromechanical speed gear for vehicles or other industrial applications consisting of three basic units, namely a unit comprising at least one planetary (or epicyclic) gear or differential group, a variable displacement hydrostatic transmission unit formed by at least one hydraulic pump and one hydraulic motor, preferably of reversible type, and a mechanical unit of cogwheels equivalent to a conventional speed gear unit, the principal characteristics of this hydromechanical speed gear being that it has infinite gear ratios and has high efficiency or performance.
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公开(公告)号：DE2854303A1
公开(公告)日：1979-06-21
申请号：DE2854303
申请日：1978-12-15
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P
IPC: F16K11/074 , G01N1/00 , G01N1/28
Abstract: A valve for transferring liquid intended to be used in a dilution system, to provide at least a pair of different segmented samples from a source supplying them, the volume of one of the segmented samples being different from the volume of the other segmented sample of said pair, said transfer valve having a first portion intended to receive and isolate in its interior an amount of the liquid sample and to combine said sample quantity with a first volume of a diluent, to produce a first precise dilution desired, a second portion of the transfer valve to receive and isolate therein a different amount of liquid sample and to combine such a sample amount of the liquid and to combine such a quantity of sample with the same quantity of diluent, in order to produce a second dilution, characterized said transfer valve because in the first p cited section (20) thereof is included a segmental passage (p1, p2) formed inside said valve and in that the second portion (24) of the transfer valve comprises a hollow element in the form of a loop (p15p17) ), of a precise internal volume. (Machine-translation by Google Translate, not legally binding)
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公开(公告)号：AU4258678A
公开(公告)日：1979-06-21
申请号：AU4258678
申请日：1978-12-15
Applicant: COULTER ELECTRONICS
Inventor： CABRERA PEDRO P
IPC: F16K11/074 , G01N1/00 , G01N1/18 , F16K11/07
Abstract: A valve for transferring liquid intended to be used in a dilution system, to provide at least a pair of different segmented samples from a source supplying them, the volume of one of the segmented samples being different from the volume of the other segmented sample of said pair, said transfer valve having a first portion intended to receive and isolate in its interior an amount of the liquid sample and to combine said sample quantity with a first volume of a diluent, to produce a first precise dilution desired, a second portion of the transfer valve to receive and isolate therein a different amount of liquid sample and to combine such a sample amount of the liquid and to combine such a quantity of sample with the same quantity of diluent, in order to produce a second dilution, characterized said transfer valve because in the first p cited section (20) thereof is included a segmental passage (p1, p2) formed inside said valve and in that the second portion (24) of the transfer valve comprises a hollow element in the form of a loop (p15p17) ), of a precise internal volume. (Machine-translation by Google Translate, not legally binding)
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