Cushion member for sound-proof sealing
AssigneeAktiebolaget Lennartsfors Mekaniska Verkstad
InventorInge Wilgot Ahs
Life of this patent
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Abstract
A cushion member for sound-insulating and air-tight sealing, which cushion is to be attached substantially along the edge of a first surface, which at this edge is connected via the cushion with another surface, which need not have a form absolutely conforming to the first surface at the connecting surface and need not be smooth. The cushion consists of an elongated casing filled with balls of plastic material and with a cylindrical cross-section of soft, flexible and air-impervious material and it is adapted to be attached to the first surface.
Claims10
In a cup-shaped, ear-covering device having an annular flange adapted to contact the head of the wearer around the ear, the improvement comprising a sound-barrier structure including an annular, hollow casing having a generally-cylindrical cross-section in an unsqueezed condition, formed of a soft, pliable material and shaped to fit against said annular flange between said annular flange and said head of said wearer, a plurality of freely-moveable, small balls disposed in the interior of said casing, whereby said structure deforms and conforms to the surface of said annular flange and said head of said wearer when said structure is squeezed against said head of said wearer by said ear-covering device, and holding means for detachably holding said structure against said ear-covering device.
Dependencies are inferred from the claim text.