Patents by Inventor Laszlo Szakvary

Laszlo Szakvary 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).

  • Radioelectric signal trains generator and portable transmitter comprising such a generator
    Patent number: 4430757
    Abstract: The present invention relates to a radio signals transmitter.The transmitter according to the invention comprises a pulse train generator including a quartz oscillator, generating a high frequency signal which is provided to a transistor 7 controlled by the charge and the discharge of a condensor 5 acting on the voltage of its base. A train of A.C. frequency pulses is thereby produced.The generator is protected by a housing which is worn around the neck of the user by means of a chain forming a quarter wavelength antenna.The present invention is used as a portable distress signals transmitter for isolated persons, such as skiers, mountaineers or other people in difficulty.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: February 7, 1984
    Assignee: Elphora
    Inventor: Laszlo Szakvary