Machine Control Patents (Class 235/420)
  • Patent number: 8975925
    Abstract: An electronic safety device for a protection barrier includes a transponder, a transceiver device for receiving a return signal from the transponder, the transponder being movable with respect to the transceiver and adapted to be placed at a current distance, an electric circuit which is switched when the distance is lower or higher than a reference distance and a control and switching system. The transceiver device processes the return signal to generate a control signal with an electric parameter variable in function of the distance. The control signal is a periodic signal with a frequency and has a first spectrum with a middle interval and a second spectrum with lateral intervals shifted with respect the middle interval when the distance is higher than the reference distance, the parameter being associated to a frequency value that comprises either into the middle interval or into one of the lateral intervals.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: March 10, 2015
    Assignee: Pizzato Elettrica S.R.L.
    Inventor: Giuseppe Pizzato
  • Patent number: 6960988
    Abstract: A multi-function customer satisfaction survey device, system and method. A plurality of stackable tip trays in a restaurant each include a survey device and a calculator. Survey questions are presented on a display screen, and a survey keypad is used by the customer to enter responses. The responses are stored in a memory in the tray. The trays stack on a base unit that simultaneously collects the responses from the stacked trays, simultaneously programs the stacked trays with survey questions, and simultaneously recharges a battery in each tray.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: November 1, 2005
    Assignee: Long Range Systems, Inc.
    Inventors: Russell P. Blink, Kenneth J. Lovegreen, James A. Henderson
  • Patent number: 4075460
    Abstract: A cash dispensing system having a central computer and associated memory for maintaining customer account records, a plurality of remote transaction terminals and a communication path connecting the remote terminals with the computer. Each of the remote terminals includes a signal generator for generating data representative of a desired transaction in response to a customer-initiated operation, and for transferring that data to the computer via the communication path. The computer includes means responsive to the transaction data to generate a customer information file (CIF) signal and to transfer that signal to the remote terminal. The CIF signal is representative of a predetermined number associated with the customer. Each remote terminal includes a cash dispensing apparatus which includes a personal identification number (PIN) signal generator, a security device, a PIN signal transfer means, a CIF signal receiving means, and a cash dispenser.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: February 21, 1978
    Assignee: Incoterm Corporation
    Inventor: Richard A. Gorgens