Release mechanism for clamping tools
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 26, 2019
Grant Date -
Jun 14, 2018
app pub date -
Feb 9, 2018
filing date -
Apr 7, 2016
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Non-US Coverage
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Abstract
The present invention provides an improved release mechanism for clamping tools where problems of thread slipping due to worn out thread can be reduced by the structure of a plunger with a small diameter section and the engagement of the thread shaft is made more secure by the cam action on account of the shape of the plunger. A protrusion extends from a push button on a top portion of the half-threaded nut. Threads are formed on an upper portion of the hole for engaging the threaded shaft. The middle portion of the plunger is made to have a section of small diameter allowing the protrusion to be pushed downward in a normal position and allowing the protrusion to rely on the resilient power of the helical spring to push it upward into the small diameter section.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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TSUI GARY | SAN MARINO CA |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chen, Shaosheng | Los Angeles, US | 2 | 5 |
# of filed Patents : 2 Total Citations : 5 | |||
Liu, Weinan | Monrovia, US | 2 | 10 |
# of filed Patents : 2 Total Citations : 10 | |||
Tsui, Gary | San Marino, US | 22 | 378 |
# of filed Patents : 22 Total Citations : 378 |
Cited Art Landscape
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Patent Citation Ranking
- 1 Citation Count
- B25B Class
- 35.14 % this patent is cited more than
- 6 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 26, 2026 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 26, 2030 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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