Roller And Disk Or Cone Patents (Class 84/129)
  • Multimedia keyboard
    Patent number: 7215328
    Abstract: A multimedia console incorporating an alphanumeric keyboard, and a musical key-bed is described for generating multimedia work product conveniently when coupled with a digital personal computer or optionally as a stand alone music equipment. The musical key-bed is optionally detachably coupled with a protective cover for providing ergonomic support when said musical key-bed is not being used.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: May 8, 2007
    Assignee: Creative Technology Ltd
    Inventors: Wong Hoo Sim, Kok-Liang Lim
  • Hearing aid sound seal device
    Patent number: 6367578
    Abstract: A hearing aid sound seal device for preventing audio feedback. The hearing aid sound seal device includes a support assembly being adapted to be securely and removably disposed about a hearing aid and being adapted to be snugly and removably received in an ear canal of a user's ear to essentially prevent audio feedback.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: April 9, 2002
    Inventor: Howard E. Shoemaker
  • Electro pneumatic player piano
    Patent number: 4145947
    Abstract: The specification discloses a pneumatic player piano which utilizes an electric motor roll drive. The roll drive is actuated by a mechanical switching arrangement which responds to the system vacuum so as to simulate the operation of a conventional air motor. The pneumatic stack is constructed to permit the pouch board and valve boxes of an entire level to be fabricated in a single molding operation. The valves themselves are formed of silicone rubber - and require neither backing, facing nor position adjustment.
    Type: Grant
    Filed: April 29, 1974
    Date of Patent: March 27, 1979
    Inventor: Luther S. Joy