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    Methods and devices for measuring conductivity of fluids
    3.
    发明专利
    Methods and devices for measuring conductivity of fluids 未知

    公开(公告)号：AU2020200670B2

    公开(公告)日：2021-06-24

    申请号：AU2020200670

    申请日：2020-01-30

    Applicant: DAVIS THOMAS A ,  NEMIR DAVID

    Inventor： DAVIS THOMAS A ,  NEMIR DAVID

    IPC: C02F1/42 ,  C02F1/46 ,  H01G9/02

    Abstract: Abstract A sensor for detecting a change in ionic composition of a fluid is disclosed. The sensor comprises: (i) a non-conductive body configured to form a cavity through which the fluid flows, (ii) a continuous ion-exchange material positioned within the cavity configured to be in contact with the fluid, (iii) a first electrode in contact with a first portion of the ion-exchange material and a second electrode in contact with a second portion of the ion-exchange material, the first and second electrode being separated by a predetermined distance, and (iv) a device coupled to the ion-exchange material configured for measuring the electrical conductivity across the ion-exchange material. WO 2015/134867 PCT/US2015/019167

    COUNTERBALANCING TORSION SPRING MECHANISM FOR DEVICES WHICH MOVE UP AND DOWN AND METHOD OF SETTING THE TORSION SPRINGS THEREOF
    5.
    发明专利
    COUNTERBALANCING TORSION SPRING MECHANISM FOR DEVICES WHICH MOVE UP AND DOWN AND METHOD OF SETTING THE TORSION SPRINGS THEREOF 未知

    公开(公告)号：CA1329628C

    公开(公告)日：1994-05-17

    申请号：CA608305

    申请日：1989-08-14

    Applicant: DAVIS THOMAS J

    Inventor： DAVIS THOMAS J

    IPC: E05D15/16 ,  E05F15/00

    Abstract: Counterbalancing mechanism for a garage door or other device in which a torsion spring end member is fastened to a second member to which it is connected during normal operation of the counterbalance by cooperating interfitting elements on the members which allow longitudinal movement of the end of the spring during a spring adjusting operation. The counterbalance hardware includes a self-locking winding mechanism for winding or unwinding one or more torsion springs which operates to fix one end of the spring connected thereto against movement during normal operation of the counterbalance. The structure connecting the ends of each torsion spring into the hardware is such that each end of the spring is always connected for rotation with either the torsion shaft of the counterbalance or the self-locking mechanism including during the adjustment or setting of the torsion in the springs. The mechanism is used in a novel method of setting or adjusting torsion spring tension in which the door is initially in a down position with the door unlocked and springs unwound. The springs are then wound to initially partly lift the door and then unwound to seat the door to establish the proper tension in the springs. Two springs are connected to the winding mechanism and are adjusted simultaneously.

    Manure spreader.
    6.
    发明专利
    Manure spreader. 未知

    公开(公告)号：GB2270246A

    公开(公告)日：1994-03-09

    申请号：GB9318289

    申请日：1993-09-03

    Applicant: DAVIS THOMAS

    Inventor： DAVIS THOMAS

    IPC: A01C3/06

    Abstract: An apparatus for dispersing material comprises a container for holding material to be dispersed, and a lid (38) movable relative to the base. A shaft (33) is rotatably mounted between the front and rear walls of the base and a plurality of dispersing members (19) are mounted on and rotatable with the shaft for throwing material held in the base through a gap (37) defined between the lid and the base. The shaft is movable in slot 28 in a substantially vertical direction to sustain generally uniform contact between the dispersing members and the material to be dispersed.

    MARKING FLOAT
    7.
    发明专利
    MARKING FLOAT 未知

    公开(公告)号：CA994177A

    公开(公告)日：1976-08-03

    申请号：CA179398

    申请日：1973-08-22

    Applicant: DAVIS THOMAS S

    Inventor： DAVIS THOMAS S

    IPC: B63B22/00

    Abstract: A rigid foamed synthetic plastic in a generally spherical shape is provided with a groove around its entire periphery fixedly receiving one end of a line having its intermediate portion generally uniformly wound within the groove. The wound line is covered and securely held within the groove by means of one or more encircling resilient bands, with the opposite end of the line extending between the bands or from underneath one band to its connection with a weight. When marking a spot in the water, the weight will pull the line from beneath the rubber band or bands, which act as an unwinding brake, until the weight strikes the bottom of the body of water with the foamed plastic sphere floating on top of the water; thereafter, the band will resist or prevent further unwinding of the line. To prevent unwinding of the line, a second resilient band may be provided in a plane perpendicular to and encircling the first band. Tabs on the bands will facilitate their removal, when desired.

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