Patents by Inventor Kai Leppalahti

Kai Leppalahti 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: 5970155
    Abstract: The invention relates to a headset (1) for a hearing protector provided with a padding part (12) having an essentially elliptical ear opening (18). The headset comprises a microphone (2), an earphone (3), and conducting wires (7) for bringing signals to the earphone (3) and from the microphone (2). According to the invention the earphone (3) is attached to a bow part (10) whose contour essentially follows the external dimensions of the hearing protector padding (12), and a mounting wing (13, 4) is connected to the bow part (10) or the earphone (3) and has a maximum dimension (A) which is smaller than the maximum dimension of the ear opening (18) and yet greater than the minimum dimension (B) of the ear opening (18), and during use the maximum dimension of the mounting wing (13, 4) is essentially horizontal.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: October 19, 1999
    Assignee: Kitek Oy Ab Insinooritoimisto
    Inventor: Kai Leppalahti
  • Patent number: 5790681
    Abstract: A fixing assembly for a helmet headset comprises a body piece, a microphone attached to the body piece, an earphone attached to the body piece, and cabling for taking signals to the earphone and from the microphone An elongated tongue piece is attached to the body piece, and the body piece includes at least two hole perforations with a width equal to that of the tongue piece.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: August 4, 1998
    Assignee: Kitek Oy Ab Insinooritoimisto
    Inventor: Kai Leppalahti
  • Patent number: D460436
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: July 16, 2002
    Assignee: Savox Solutions OY AB (LTD)
    Inventors: Mats Björklund, Kai Leppälahti
  • Patent number: D492289
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: June 29, 2004
    Assignee: Savox Communications Oy Ab (Ltd)
    Inventors: Juha Lätti, Heikki Hietanen, Kai Leppälahti