Patents by Inventor Charles Walter Coffman, II

Charles Walter Coffman, II 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).

  • Door stop
    Patent number: 7690080
    Abstract: An apparatus is disclosed having a first wedge having a first side and a second side oriented at some angle relative to the first side, and a second wedge glidably connected to the first wedge, having a first side and a second side oriented at some angle relative to the first side. The first wedge glides relative to the second wedge to stop the door before the door stop reaches a maximum length of travel.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: April 6, 2010
    Assignee: Sensor Safe, Inc.
    Inventor: Charles Walter Coffman, II