Patents by Inventor Daniel C. MacIntyre

Daniel C. MacIntyre 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: 5283550
    Abstract: A shopping cart receiver alarm system includes an RF transmitter for transmitting an RF signal having at least a minimum signal strength within a boundary that is generally defined by the outermost contours of a store parking lot. A receiver assembly responsive to the RF signal is housed within the handle of a shopping cart. The receiver assembly includes a self-contained power supply, an RF receiver for receiving the RF signal and for providing an output signal indicating a loss of RF signal strength. The receiver assembly further includes a timing circuit and an audible alarm responsive to an alarm signal generated by the timing circuit. The alarm signal controls the audible alarm according to a selectable alarm timing sequence that is initiated by the output signal of the RF receiver.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: February 1, 1994
    Assignee: Wild's - Wild Things, Inc.
    Inventor: Daniel C. MacIntyre