Patents by Inventor William Holland Tomlinson

William Holland Tomlinson 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: 10415293
    Abstract: An apparatus is provided for minimizing closing force of a door. The apparatus comprises a housing adapted to be disposed in the hinged edge of the door. A piston is slidably mounted in the bore. A button having an inner end and an outer end is disposed in the bore with the inner end of the button engaging the piston for urging the button toward a first extended position where the button extends from the edge of the door. The button is slidable in the bore relative to the housing for reciprocal movement between the extended position and a second position where the button is depressed into the bore against the force of the piston. The button is disposed so that the outer end of the button engages the door frame for slowing movement of the door in a closing direction as the button is moved into the bore to the depressed second position.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 17, 2019
    Assignee: ASSA ABLOY Accessories and Door Controls Group, Inc.
    Inventor: William Holland Tomlinson
  • Patent number: 10358856
    Abstract: A damping system comprises a door panel operably connected to a rail for movement along the rail. An apparatus is mounted to the rail for damping movement of the door along the rail at an end position. The damping apparatus comprises a base defining a chamber having a closed end and an open end, the base configured for securing the damping apparatus to the rail. A piston is slidably mounted in the chamber and extends from the open end of the base in a first position. The piston includes a cylinder, a piston head moveable within said cylinder, a piston rod connected to the piston head, and a compression spring disposed on the piston rod between the cylinder and closed end of the chamber. The damping apparatus is secured to the rail for engaging and slowing movement of the door panel in a direction along the rail at the position as the piston is moved in the direction from the first position to a second position.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: July 23, 2019
    Assignee: ASSA ABLOY Accessories and Door Controls Group, Inc.
    Inventor: William Holland Tomlinson
  • Publication number: 20180002966
    Abstract: An apparatus is provided for minimizing closing force of a door. The apparatus comprises a housing adapted to be disposed in the hinged edge of the door. A piston is slidably mounted in the bore. A button having an inner end and an outer end is disposed in the bore with the inner end of the button engaging the piston for urging the button toward a first extended position where the button extends from the edge of the door. The button is slidable in the bore relative to the housing for reciprocal movement between the extended position and a second position where the button is depressed into the bore against the force of the piston. The button is disposed so that the outer end of the button engages the door frame for slowing movement of the door in a closing direction as the button is moved into the bore to the depressed second position.
    Type: Application
    Filed: June 30, 2017
    Publication date: January 4, 2018
    Inventor: William Holland Tomlinson
  • Publication number: 20170204646
    Abstract: A damping system comprises a door panel operably connected to a rail for movement along the rail. An apparatus is mounted to the rail for damping movement of the door along the rail at an end position. The damping apparatus comprises a base defining a chamber having a closed end and an open end, the base configured for securing the damping apparatus to the rail. A piston is slidably mounted in the chamber and extends from the open end of the base in a first position. The piston includes a cylinder, a piston head moveable within said cylinder, a piston rod connected to the piston head, and a compression spring disposed on the piston rod between the cylinder and closed end of the chamber. The damping apparatus is secured to the rail for engaging and slowing movement of the door panel in a direction along the rail at the position as the piston is moved in the direction from the first position to a second position.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 20, 2017
    Inventor: William Holland Tomlinson