Wooden spring and mattress manufactured with wooden springs
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United States of America Patent
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May 14, 2019
Grant Date -
Aug 13, 2015
app pub date -
Jan 21, 2015
filing date -
Jan 22, 2014
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Abstract
Described are wooden coil springs, including those made of non-compressed wood, and mattresses with such coil springs. Also described is a method of producing a coil spring made of non-compressed wood, which includes winding a slat on reel, steaming and drying to produce the wooden coil spring. Such a coil spring may have a cylindrical shape, a cone shape or a truncated cone shape, and may have a substantially perpendicular end turn with respect to the longitudinal axis of the coil spring.
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