Air duct with annular rolling portion
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Nov 16, 2006
app pub date -
May 12, 2005
filing date -
May 12, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An air duct is constructed with a rolling annular portion that is desirably formed of a series of hemi-toroid planar-cut surfaces. The rolling annular portion may include an inner portion and an outer portion constructed of different materials. The rolling annular portion permits relative movement within the air duct while minimizing disturbances in airflow.
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