Automatic umbrella

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9144276
APP PUB NO 20150040954A1
SERIAL NO

13960806

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The automatic umbrella has an improved tube unit which contains a first tube, a second tube, and a third tube telescoping together. An inner plug is positioned inside the second tube. A reinforcing tube is housed in the second tube and capable of moving upward through the inner plug. The main spring has its top end against the reinforcing tube, and its bottom end in a lower part of the first tube. The secondary spring is inside the third tube with a top end against the inner plug of the top nest and a bottom end against the inner plug of the second tube. The tube unit enjoys enhanced resilience when the automatic umbrella is opened. When the umbrella is closed, two sets of springs are compressed at separate instants and their resilience cancels each other indirectly. The strength to close the umbrella is therefore reduced.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ni, Su-Chen Taipei, TW 2 3

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