Method for providing pocketed coil strings having a flat overlap side seam
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United States of America Patent
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Aug 8, 1989
Grant Date -
N/A
app pub date -
Jun 13, 1988
filing date -
Jun 13, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved method and apparatus for constructing an improved pocketed coil string, in which a tube of fabric is formed, a transverse seam is provided across the tube, a partially compressed coil spring is inserted adjacent to the seam, and a second seam is provided, thus encapsulating the spring. The fabric is guided around the outer surface of a tubular mandrel, thus forming a tube, and the spring is inserted into the mandrel such that as the spring exits the opposite side of the mandrel, it is within the tube of fabric. Excessive spring compression is avoided.
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