Patents by Inventor Donald L. McLaughlin

Donald L. McLaughlin 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).

  • Patent number: 4520451
    Abstract: A programmable accountability apparatus for installation into a vending machine is disclosed. The accountability apparatus comprises a plurality of monitoring wires attachable to points within the vending machine carrying AC signals selected for monitoring, means for converting the AC signals into digital signals, a microprocessor which is programmed to monitor and collect data from the digital signals, and a memory for storing both data collected from the digital signals and data for programming the microprocessor. The data for programming the microprocessor comprises a selected digital word for each monitoring wire which determines whether the occurrence of the AC signal monitored by that wire is to be counted, timed or measured in duration.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: May 28, 1985
    Assignee: Mars Incorporated
    Inventor: Donald L. McLaughlin
  • Patent number: 4272757
    Abstract: An accountability system for a vending machine system having means for vending products and means for determining credit, the accountability system comprising a portable electronic data file module which is removable from the system, and means for collecting transaction data from the vending machine system and recording it in the portable electronic data file module. A module interlock and a power monitor are provided to ensure that accurate information is stored in the module.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: June 9, 1981
    Assignee: Mars, Incorporated
    Inventors: Donald L. McLaughlin, Elwood E. Barnes
  • Patent number: 4267915
    Abstract: A price interface for use in connecting a calculating and control unit with a multiprice vending apparatus, the price interface including a first register for storing the initial price value during a vending cycle and a second register for storing the current price value during the vending cycle.
    Type: Grant
    Filed: October 3, 1978
    Date of Patent: May 19, 1981
    Assignee: Mars, Inc.
    Inventors: Donald L. McLaughlin, Paul J. Beshenich
  • Patent number: 3941989
    Abstract: Continuous power and a high rate clock are supplied to a calculator while it is in an execute mode and is actually decoding and processing input information, but lower duty cycle power and lower duty cycle clock pulses are supplied during the subsequent display mode, when the only requirement is to maintain and display selected information resulting from the execute cycle, so as to reduce the power consumption rate as compared to the rate during the execute mode. If there is no new execute mode within a selected time interval, the display is turned off and the duty cycle of the power and the clock supplied to the calculator are lowered still further so as to maintain (without displaying) selected stored information but to further reduce the rate of power consumption.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: March 2, 1976
    Assignee: MOS Technology, Inc.
    Inventors: Donald L. McLaughlin, Ronald W. Streiber