Patents by Inventor David M. Ryvin

David M. Ryvin 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).

  • One-piece adjustable headgear support
    Patent number: 6341382
    Abstract: A one-piece adjustable headgear strap is constructed of lightweight material, for example plastic, and therefore is inexpensively manufactured and comfortable to wear. The strap is constructed with an adjustment mechanism that enables it to be easily adjusted around the head of wearer with just one hand. The adjustment mechanism is also integrally formed with the headband of the headgear support and is therefore inexpensive to manufacture due to its one-piece construction.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: January 29, 2002
    Assignee: Jackson Products, Inc.
    Inventors: David M. Ryvin, Christopher J. Lundgren