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    A system and method for monitoring a progressive sequence of physiological conditions
    51.
    发明授权
    A system and method for monitoring a progressive sequence of physiological conditions 失效
    用于监测生理条件进展序列的系统和方法

    公开(公告)号：US3584618A

    公开(公告)日：1971-06-15

    申请号：US3584618D

    申请日：1969-03-17

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： REINHARD CLYDE J ,  JUSTUS GORDON R ,  KEARNS KENNETH L

    IPC: A61B5/08 ,  A61B5/05

    CPC classification number: A61B5/0809 ,  A61B5/7405 ,  C10M2201/062 ,  C10M2205/024 ,  C10M2205/026

    Abstract: An alarm circuit for a respiration monitoring system which, in response to electrical signals indicative of the occurrence of a breath, determines whether the time interval between successive breaths exceeds a first preset time interval. When this occurs, a warning indicator is activated and the circuit begins monitoring the respiration rate. If the rate during a second preset time interval is less than a first preset rate, a low rate indicator is activated and the circuit determines whether the respiration rate during the second time interval and a third preset time interval is less than a second preset rate which is greater than the first preset rate. If the rate exceeds the second preset rate, the warning and low rate indicators are deactivated. If the rate is less than the second preset rate, an apnea indicator is activated.

    Polarographic cell
    52.
    发明授权
    Polarographic cell 失效
    POLAROGRAPHIC CELL

    公开(公告)号：US3577332A

    公开(公告)日：1971-05-04

    申请号：US3577332D

    申请日：1967-07-12

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： PORTER JOE A ,  COUCH STEUART L

    IPC: G01N27/49 ,  G01N27/46

    CPC classification number: G01N27/404

    Abstract: A CELL FOR POLARGRAPHIC ANALYSIS OF THE TYPE EMPLOYING A PAIR OF ELECTRODES JOINED BY AN ELECTROLYTE AND SEPARATED FROM THE SAMPLE MEDIUM BY A SELECTIVELY PERMEABLE MEMBRANE. PRESSURE COMPENSATION IS PROVIDED FOR THE CELL BY EMPLOYING AN ION IMPERMEABLE BARRIER WHICH CLOSES A PASSAGE LEADING TO THE ELETROLYTE RESERVOIR IN THE CELL SO THAT CONTAMINANTS OUTSIDE OF THE CELL CANNOT REACH THE ELECTROLYTE RESERVOIR. THE BARRIER HAS A SENSITIVITY TO PRESSURE CHANGES GREATER THAN THAT OF THE MEMBRANE SO THAT THE SPACIAL RELATIONSHIP BETWEEN THE MEMBRANE AND THE SENSING ELECTRODE OF THE CELL IS NOT INFLUENCED BY CHANGING PRESSURE CONDITIONS.

    Controlled rate dispenser
    53.
    发明授权
    Controlled rate dispenser 失效
    控制率分配器

    公开(公告)号：US3574554A

    公开(公告)日：1971-04-13

    申请号：US3574554D

    申请日：1969-06-02

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BERRY EDWARD A ,  BARTER LE ROY D

    IPC: G01N31/16 ,  G05D21/02 ,  G01N31/18

    CPC classification number: G01N31/16 ,  G05D21/02

    Abstract: THERE IS DISCLOSED A DISPENSING APPARATUS HAVING A CONTROLLED DISPENSER MECHANISM FOR ADDING A FIRST SUBSTANCE TO A SECOND SUBSTANCE THEREBY FORMING A MIXTURE AT A RATE DETERMINED BY A PRESET MIXTURE END POINT ADJUSTMENT. A MIXTURE SENSOR IS CONNECTED TO A COMPARATOR TO PRODUCE A COMPARATOR OUTPUT SIGNAL WHEN THE SENSOR SIGNAL EXCEEDS A PRESET MIXTURE END POINT LEVEL. THE COMPARATOR OUTPUT SIGNAL IS CONNECTED TO ACTIVATE A SWITCHING DEVICE WHEREBY THE DISPENSER MECHANISM IS DISCONNECTED FROM AN ACTIVATING SOURCE OF ENERGY AND CONNECTED TO AN ENERGY DISCHARGE DEVICE. AN ENERGY STORAGE DEVICE IS ATTACHED TO THE DISPENSER MECHANISM AND BY THE ACTIVATED SWITCH DEVICE IS CONNECTED TO THE ENERGY DISCHARGE DEVICE TO PROVIDE A DECAYING SOURCE OF ENERGY TO THE DISPENSER MECHANISM THEREBY SLOWING THE DISPENSING RATE. IN RESPONSE TO THE SENSOR SIGNAL DROPPING BELOW THE MIXTURE END POINT, THE SOURCE OF ENERGY IS AGAIN CONNECTED BY THE SWITCH DEVICE TO THE DISPENSER MECHANISM. A TIMED DISCONNECT IS CONNECTED TO THE COMPARATOR OUTPUT AND IN RESPONSE TO THE SENSOR SIGNAL EXCEEDING THE MIXTURE END POINT LEVEL FOR A PRESET END POINT INTERVAL DISCONNECTS THE DISPENSER MECHANISM FROM THE SWITCH DEVICE TO END THE DISPENSING ACTION UNTIL RESET FOR THE NEXT CYCLE.

    Alkali metal ion sensitive glass
    54.
    发明授权
    Alkali metal ion sensitive glass 失效
    ALKALI金属离子敏感玻璃

    公开(公告)号：US3558528A

    公开(公告)日：1971-01-26

    申请号：US3558528D

    申请日：1968-11-04

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BUCK RICHARD P ,  NOLAN ROBERT W

    IPC: C03C3/076 ,  C03C4/18 ,  C03C3/04 ,  H01B1/06

    CPC classification number: C03C4/18 ,  C03C3/076

    Abstract: A SODA-SILICATE GLASS CONTAINING ABOUT 6 TO 9 MOLE PERCENT OF AN ADMIXTURE OF ZARO2 AND TIO2. THE GLASS HAS EXCEPTIONALLY LOW ELECTRICAL RESISTANCE AND IS SENSITIVE TO ALKALI METAL IONS, SUCH AS POTASSIUM AND SODIUM IONS. THE GLASS IS PARTICULARYL SUITED FOR FORMATION INTO ION SENSITIVE BULBS OF GLASS ELECTRODES UTILIZED FOR MEASURING ALKALI METAL ION CONCENTRATIONS OF SOLUTIONS.

    Method and apparatus for comparing the transmittance of a sample and a standard
    56.
    发明授权
    Method and apparatus for comparing the transmittance of a sample and a standard 失效
    用于比较样品和标准品的发送的方法和装置

    公开(公告)号：US3552863A

    公开(公告)日：1971-01-05

    申请号：US3552863D

    申请日：1967-07-28

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： SMITH DOUGLAS H

    IPC: G01N21/59 ,  G01J1/16 ,  G01N21/22

    CPC classification number: G01J1/1626

    Abstract: A TRANSMITTANCE TO FREQUENCY CONVERTER WHERE A COMMON LIGHT SOURCE ILLUMINATES A SAMPLE CUVETTE AND A REFERENCE CUVETTE. THE TRANSMITTED LIGHT IS INDIVIDUALLY MEASURED BY TWO PHOTOTUBES. THE TIME AVERAGE OUTPUT CURRENTS OF THE TWO PHOTOTUBES ARE OF OPPOSITE POLARITIES AND ARE COMBINED IN AN INTEGRATING CAPACITOR COUPLED TO A COMPARATOR. THE COMPARATOR IS PART OF FEEDBACK CONTROL LOOP WHICH PROVIDES FOR CONTROL OF THE TIME AVERAGE OF THE REFERENCE CURRENT TO MAKE IT EQUAL TO THE AVERAGE SAMPLE CURRENT. A TRANSISTOR SWITCH CONTROLS THE "ON" TIME OF THE REFERENCE PHOTOTUBE TO THEREBY CONTROL OF THE TIME AVERAGE OF THE REFEENCE CURRENT. THE DUTY CYCLE

    OF THE SWITCH IS PROPORTIONAL TO THE TRANSMITTANCE OF THE SAMPLE.

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