Patents by Inventor William B. Alexander

William B. Alexander has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Testing device and method for inflatable objects
    Patent number: 4873654
    Abstract: A testing device and method for inflatable objects comprising an arrangement of transducer sensors; connectors between the transducers and the inflatable object desired to be tested; processors electrically connected to the transducer sensors; a controller electrically connected to and interactive with the processors; and a display of the electrical output. The transducer sensors comprise a pressure transducer, a temperature transducer, and a load cell transducer. The temperature transducer is positioned generally adjacent to the valve nozzle of the inflatable object. The processors of the present invention comprise a multiplexer electrically connected to the transducer sensors, a differential amplifier electrically connected to the multiplexer, and a sample/hold amplifier electronically connected between the analog-to-digital converter and the differential amplifier. The controller comprises an input/output keyboard connected to the processors through an RS-232 communication line.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: October 10, 1989
    Assignee: Safe-Test, Inc.
    Inventors: William B. Alexander, Paul Frenger
  • Life raft testing device
    Patent number: 4642783
    Abstract: A life raft testing device comprising an arrangement of transducer sensors; connectors between the transducers and the life raft desired to be tested; processors electrically connected to the transducer sensors; a controller electrically connected to and interactive with the processors; and a display of the electrical output. The transducer sensors comprise a pressure transducer, a temperature transducer, and a load cell transducer. The temperature transducer is positioned generally adjacent to the nozzle of the life raft. The processors of the present invention comprise a multiplexer electrically connected to the transducer sensors, a differential amplifier electrically connected to the multiplexer, and a sample/hold amplifier electrically connected between the analog-to-digital converter and the differential amplifier. The controller comprises an input/output keyboard connected to the processors through an RS-232 communication line.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: February 10, 1987
    Assignee: Safe-Test, Inc.
    Inventors: William B. Alexander, Paul Frenger