Patents by Inventor James H. Helm

James H. Helm 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: 4464744
    Abstract: Both the turntable and the housing of the player are provided with hook-like projections which are brought into alignment whenever the turntable motor is switched off. These projections safeguard against accidental separation of the turntable from the unit, e.g., during handling. For service, the turntable is rotated slightly until the hooks are not in registration, and then the turntable is lifted away from the player.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: August 7, 1984
    Assignee: RCA Corporation
    Inventor: James H. Helm
  • Patent number: 4397627
    Abstract: A center plate for an apparatus for molding recorded discs is disclosed which includes a cylindrical body having an internal recess and a plug secured across the bottom end of the recess. The plug has a pair of passages therethrough opening into the internal recess. An adapter is secured to the plug. The adapter has a pair of ports and a separate universal connection between each of the ports and a separate one of the passages in the plug. This provides for a flow of a heat control medium through the center plate and permits ease of connecting pipes to the ports to provide the flow of the heat control medium.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: August 9, 1983
    Assignee: RCA Corporation
    Inventor: James H. Helm
  • Patent number: 4124118
    Abstract: The disclosure concerns a protective package for a video disc of the type having a pair of finger holes in the label area. The package includes a base member having a well for removably receiving the video disc. A pair of rotational restraints are secured to the base member for effecting engagement with the finger holes during the containment of the video disc in the well, such engagement preventing rotational motion of the video disc relative to the base member. A cover member is secured to the base member for enclosing the video disc in the well. Pursuant to another embodiment of the present invention, the rotational restraints are removably secured to the base member, instead of being integral therewith in accordance with the first embodiment.
    Type: Grant
    Filed: April 26, 1977
    Date of Patent: November 7, 1978
    Assignee: RCA Corporation
    Inventor: James H. Helm