Patents by Inventor David Metzmaker

David Metzmaker 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).

  • Warning system for a child's restraining seat for use in a passenger vehicle
    Patent number: 5260684
    Abstract: A child warning system for use in an integrated or portable child restraining seat that includes an occupancy indicator, an emergency signal and warning indicators. An electrical circuit provides a warning indication until deactuation switches are actuated to deactuate the warning indicators. A vibration sensor switch actuates an emergency signal that remains actuated until the electrical circuit is reset.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: November 9, 1993
    Assignee: Northpoint Manufacturing & Marketing, Inc.
    Inventor: David Metzmaker