Patents by Inventor Demos Andreou

Demos Andreou 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: 6297725
    Abstract: A keyless locking mechanism is activated by a remote unit which transmits coded signals to an electromechanical door lock device. The electromechanical device components are configured for secure mounting within the void or hollow portions of existing door locking apparatus. A sensor in the outer doorknob receives and forwards the coded signals to a processor which compares them with a predetermined stored signal. If an acceptable comparison is made, the processor generates control signals for the device, which acts solely along the locking axis to enable or disable the door locking assembly. The coded signals include two separate signals which are transmitted in segments interleaved with one another. The first signal includes an entrance code, while the second signal provides information concerning the frequency over which the next segments will be transmitted. The processor uses the second signal information to tune the receiver.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: October 2, 2001
    Assignee: Schlage Lock Company
    Inventors: Andrew Tischendorf, Kenneth Schultz, Gary Lehman, Demos Andreou, Ari Glezer
  • Patent number: 6107934
    Abstract: A locking mechanism for use in a door and the like. A remote handheld controller transmits coded signals to an electronic door lock. A sensor/receiver receives the signals and provides the signal to a processor which compares the coded signals against a predetermined stored signal. If the received coded signal matches the predetermined signal, then the processor generates control signals to actuate an electromechanical device, which acts solely along or about the locking axis, to enable or disable the locking latch. The user is then able to turn the door handle in a normal manner. The coded signals are comprised of two separate signals which are transmitted in segments interleaved with one another. The first signal includes an entrance code, while the second signal provides information concerning the frequency over which the next segments will be transmitted. The processor uses the second signal information to tune the receiver.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: August 22, 2000
    Assignee: Schlage Lock Company
    Inventors: Demos Andreou, Ari Glezer
  • Patent number: 5933086
    Abstract: A keyless locking mechanism for use in a door or the like. An operator activates the system by means of a portable remote handheld controller or a remote keypad unit, which transmit coded signals to an electronically controlled, electromechanical door lock device. The electronic and electromechanical device components are configured for secure mounting within the void or hollow portions of existing door locking apparatus, such as within the hollow interior doorknob, or hollow cylindrical sleeve latch actuators, or beneath the interior rose or escutcheon plates. A sensor or receiver/antenna mounted within the outer doorknob receives and forwards the coded signals to a processor which compares them with a predetermined stored signal. If an acceptable comparison is made, the processor generates control signals for the electromechanical device, which acts solely along or about the locking axis to enable or disable the door locking assembly, according to the command initiated by the operator.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: August 3, 1999
    Assignee: Schlage Lock Company
    Inventors: Andrew Tischendorf, Kenneth Schultz, Gary Lehman, Demos Andreou, Ari Glezer
  • Patent number: 5712626
    Abstract: The present invention provides for a locking mechanism for use in a door and the like. A remote handheld controller transmits coded signals to an electronic door lock. A sensor/receiver receives the signals and provides the signal to a processor which compares the coded signals against a predetermined stored signal. If the received coded signal matches the predetermined signal, then the processor generates control signals to actuate an electromechanical device, which acts solely along or about the locking axis, to enable or disable the locking latch. The user is then able to turn the door handle in a normal manner. The coded signals are comprised of two separate signals which are transmitted in segments interleaved with one another. The first signal includes an entrance code, while the second signal provides information concerning the frequency over which the next segments will be transmitted. The processor uses the second signal information to tune the receiver.
    Type: Grant
    Filed: May 30, 1996
    Date of Patent: January 27, 1998
    Assignee: Master Lock Company
    Inventors: Demos Andreou, Ari Glezer