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    Improvements in or relating to the dispensing of fluids
    71.
    发明专利
    Improvements in or relating to the dispensing of fluids 未知

    公开(公告)号：GB2284320A

    公开(公告)日：1995-05-31

    申请号：GB9502544

    申请日：1993-07-27

    Applicant: AZTEC DEV LTD

    Inventor： SCARFFE MICHAEL FREDERICK

    IPC: B06B1/06 ,  B67D1/00 ,  B67D1/08 ,  B67D1/12 ,  G01F1/66 ,  G05D11/13

    Abstract: A system for dispensing mixed beverages has a processor (6) to control the liquid dispensed at an outlet (2) in dependence upon the demand of a user as input to a keypad (8). Carbonated water is fed to the outlet (2) by way of tubing (12) and a syrup concentrate is also fed thereto by way of a tubing (20). The water and syrup is mixed in the correct quantities by way of respective proportional valves (14) which adjust the quantity or flow rate of the two constituents fed through a mixing chamber (16) in accordance with flow rate readings provided to the processor (6) by respective flow transducers (22). The flow transducers (22) measure the speed of flow ultrasonically and are able to provide flow rate readings at a rate of 50 per second. The proportional valves (14) are able to adjust the quantities fed to the mixing chamber (16) at a similar rate such that the mix can be reliably determined even if there are transitory pressure drops or viscosity changes in the system.

    SLIDABLE ASSEMBLIES AND PROBE ELEMENTS
    72.
    发明专利
    SLIDABLE ASSEMBLIES AND PROBE ELEMENTS 未知

    公开(公告)号：CA2112072A1

    公开(公告)日：1994-12-17

    申请号：CA2112072

    申请日：1993-12-21

    Applicant: AZTEC DEV LTD

    Inventor： SCARFFE MICHAEL F

    IPC: A61C19/04 ,  F16C1/20 ,  A61C3/00

    Abstract: SLIDABLE ASSEMBLIES AND PROBE ELEMENTS A probe element for probe apparatus such as a dental probe comprises a curved tubular sheath having a proximal end for connection to main body of the probe apparatus and an open distal end. A probe member slides within the sheath and has a proximal end for connection to position sensing components in the probe apparatus main body and a distal end that protrudes by a variable extent from the open distal end of the sheath. Within the sheath the probe member is made up of a series of relatively large diameter beads joined by smaller diameter bridges to provide improved mobility of the probe member in the sheath even after prolonged storage.

    Process and apparatus for multistage evaporative cooling
    76.
    发明专利
    Process and apparatus for multistage evaporative cooling 未知

    公开(公告)号：DE3314890A1

    公开(公告)日：1984-10-25

    申请号：DE3314890

    申请日：1983-04-25

    Applicant: AZTEC SENSIBLE COOLING INC

    Inventor： HOOD LARRY H ,  WEST DOY M

    IPC: F24F5/00 ,  F25D9/00 ,  F25D17/06 ,  F28C3/06

    Abstract: The invention relates to a process and an apparatus according to which and in which, for the cooling of air, the air stream is conducted through a first heat exchanger (33), in heat exchange with a second air stream, and then through a first circulating water cooler (18), the water of which is cooled by means of an evaporative cooling system (21) by the second air stream (26,28,29), after which the first air stream is conducted through a second indirect heat exchanger (44) and then into a further direct heat exchanger (47).

    SYSTEM FOR REGULATING THE SUPPLY OF ELECTRICAL POWER TO A LOAD FROM AN A.C. SOURCE
    77.
    发明专利
    SYSTEM FOR REGULATING THE SUPPLY OF ELECTRICAL POWER TO A LOAD FROM AN A.C. SOURCE 未知

    公开(公告)号：GB1240912A

    公开(公告)日：1971-07-28

    申请号：GB3156469

    申请日：1969-06-23

    Applicant: AZTEC IND INC

    Inventor： BYBEE ROGER W ,  PHYFE LAWSON M

    IPC: G05D23/24 ,  G05F1/45

    Abstract: 1,240,912. Automatic temperature control. AZTEC INDUSTRIES Inc. June 23, 1969, No. 31564/69. Heading G3R. An automatic temperature control system comprises a heating element fed from an A. C. supply by way of a switching device, the arrangement being such that the switching device is operative to connect the heating element to the supply only at times when the supply voltage is zero. A heating element 36 is fed from an A. C. supply 10, 14 by way of a bridge of rectifiers across which is connected a thyristor SCR2, the element 36 being energized when a gating signal for the thyristor SCR2 is present on a conductor 32. A stabilized control voltage is developed on conductors 12, 22 from an A.C. source 12, 14, for feeding the control parts of the system. A potential devider R2, P1, P2, P3 is connected across the lines 12, 22 a switch SW1 being included to select potentiometer P1 or P2; the potentiometer P1 being controllable to set the desired day time temperature of the system and the potentiometer P2 the night time setting. The switch SW1 may be manually or time controlled. A thermistor 26, sensitive to the heating element 36 provides a variable bias to the base of transistor Q1, thereby, by way of transistors Q2, Q3, to provide a signal at the emitter of unijunction transistor UJT1. This transistor forms, together with capacitor C2, a relaxation oscillator, which triggers a thyristor SCR1 forming part of a memory device. When thyristor SCR1 is turned on, a capacitor C4 discharges and the voltage at a junction 30 drops to zero, this voltage being applied to the base of a transistor Q4 forming part of a NAND gate. When the voltage of the A.C. source passes through zero the voltage on the base of the other transistor Q5 of the NAND gate is also zero. An output then appears at a point 34 of the gate which triggers the thyristor SCR2 to energize the heating element 36. The bridge of rectifiers may be replaced by a pair of reverse parallel connected thyristors or the load 36 may be placed in parallel with the thyristor SCR2 so as to be energized with D. C. In another embodiment the load is arranged to be energized either between terminals 10, 12, or 12, 14.

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