Ball Joint Base and Twist Lock for Slideable Concentric Members Adapted for Use in Umbrellas with Extensible Canopy Ribs
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Mar 5, 2020
app pub date -
Apr 16, 2019
filing date -
Apr 16, 2019
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Abstract
A twist lock mechanism for easily achieving a secure locking relationship between an outer member and an inner member is provided for use on an umbrella with a ball-joint based for adaptive orientation, and a spike receiving base or anchoring base mechanism.
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