Patents Examined by Edgavdo San Martin
  • Method of making a speaker edge containing isocyanate and polyol
    Patent number: 6543574
    Abstract: It is an object of the present invention to provide a speaker edge which is high in strength, less in scattering of f0, high in waterproofness, small in amplitude at the time of resonance, easy to mold, and easy to be integrated with a cone body. That is, the present invention provides a speaker edge constituted by a molding which is molded in a manner so that a speaker edge raw material composition containing isocyanate and polyol is injected into a cavity of a mold by an agitating/mixing apparatus and subjected to reaction, foaming and curing in the cavity.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: April 8, 2003
    Assignees: Inoac Corporation, Matsushita Electric Industrial Co., Ltd.
    Inventors: Sinya Mizone, Shinya Kaneko, Kiyosi Ikeda, Hiroko Yamasaki
  • System of elements for the diffusion of sound in rooms deligated to the reproduction of music and speech
    Patent number: 6530451
    Abstract: A system for sound diffusion, particularly at low and infra-low frequencies in rooms used for the reproduction of music and speech including at least one large horn enclosure and an architectural structure with a continuous or intermittent “multi-hemicylindrical” surface. The surface covers the walls of the room, for the diffusion/reflection of the sound in a broad spectrum of frequencies and with absorption that is adjustable at least at the low frequencies.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: March 11, 2003
    Assignee: Outline S.N.C. di Noselli G. & C.
    Inventor: Guido Noselli