Piano-hammer Felting Patents (Class 144/29)
  • Hardwood texturing apparatus and methods for using same
    Patent number: 9352482
    Abstract: Texturing apparatuses and methods are provided for forming a textured surface on a panel. An exemplary texturing apparatus has a bed and a mount having at least one cutting blade that can be configured to impart a cut to a top structural surface of the panel as the panel is moved along the bed. The bed is configured to receive the panel and can define one or more openings. The mount is operably positioned in the opening and can be articulated in one or more directions with respect to the plane of the bed.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 31, 2016
    Assignee: Columbia Insurance Company
    Inventors: Kris Edward Hahn, David Voyles
  • Piano hammer
    Patent number: 4135430
    Abstract: In a coupling construction of a wooden base with a striking head of a piano hammer, at least one gap is left between a longitudinal end of the striking head and the longitudinal end face of the wooden base which serves as a refuge for unexpected deformation of the elastic insert, thereby avoiding separation of the striking head from the wooden base and development of cracks in the wooden base when striking the string.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: January 23, 1979
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventor: Hajime Hayashida