Patents by Inventor Steven R. Dorfman

Steven R. Dorfman 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: 4186641
    Abstract: A wireless toy musical instrument, such as a guitar, includes a body member and electronic circuitry disposed within the body for transmitting the output of the musical instrument to a separate receiver such as a standard radio. The circuitry includes an audio section having a sound transducer which converts the audio signal generated by the strings of the guitar to a varying electrical signal comprising either solely a voltage or a combination of voltage and current. The circuitry also includes an oscillator section for generating a carrier signal operating at a predetermined radio frequency, the frequency being set by an LC circuit. The converted audio signal from the transducer is fed into the oscillator, the converted audio signal being combined with the carrier signal. Depending on the type of sound transducer used, a frequency modulation of the carrier signal is effected, either by the change of voltage, or current which is generated by the sound tranducer and applied to the carrier signal.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: February 5, 1980
    Assignee: Carnival Toys, Inc.
    Inventor: Steven R. Dorfman
  • Patent number: 4116443
    Abstract: A game apparatus includes an array of paddle-type display elements rotatably mounted in a housing, with the paddles of the display elements having suitable indicia thereon. The game may be played by actuation of selective display elements in tic-tac-toe fashion, with actuation of the paddle elements being preferably effected by tossing small bags against selective paddles. The array of display elements is arranged in a series of rows and columns in a body structure, with each display element being rotatably mounted about a shaft secured to the body structure. Each display element preferably comprises three radially extending planar portions radiating from a central hub, and an aperture is provided in the hub to which the associated shaft extends. Each aperture defines in cross-section an isosceles triangle.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: September 26, 1978
    Assignee: L.J.N. Toys, Ltd.
    Inventor: Steven R. Dorfman
  • Patent number: D250137
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: October 31, 1978
    Assignee: L.J.N. Toys, Ltd.
    Inventor: Steven R. Dorfman