Method of forming a foam coated convoluted tubing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 28, 1999
Issued Date -
N/A
app pub date -
Aug 7, 1998
filing date -
Jun 10, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Convoluted tubing for automotive wiring harnesses and other elongated substrates is provided with sound dampening qualities by filling the valleys between convolutions with a flexible, resilient foamed composition, such as silicone rubber, and foaming the composition to cause expansion of the foam so that ribs of foam project radially from the valleys. In a preferred embodiment, spaced apertures are formed in the valleys to allow the expanding foam to form radially inwardly projecting fingers which contact the wiring harness and act to dampen vibrations. The corrugated tubing may be axially slit and the slit allowed to be filled with the foamed composition which, when foamed, eliminates noises caused by movement of the edge surfaces of the slit when torsional forces are applied to opposite ends of the tube.
First Claim
Other Claims data not available