Sinuous spring for a furniture item
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United States of America Patent
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Jun 27, 2017
Grant Date -
Mar 3, 2016
app pub date -
Aug 27, 2014
filing date -
Aug 27, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A sinuous spring for a furniture item includes various elements. For instance, a sinuous spring might include bars that are both parallel and non-parallel. The parallel bars might be positioned in a middle segment, and the non-parallel bars might be positioned in opposing end spring segments. A sinuous spring might be fabricated using various devices and methods, such as a wire-fabricating apparatus including a wire-forming mechanism and a length-adjusting mechanism. The wire-forming mechanism includes one or more sets of wire-forming dies that receive a continuously fed wire and that form the wire into a wire-shape configuration (e.g., sinuous-shape configuration). The length-adjusting mechanism includes a set of grooved wheels that receive the formed wire in the grooves and rotate to stretch or compress the formed wire.
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