PORTED PISTON FOR AUTOMATIC NAILER
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Jul 27, 2017
app pub date -
Apr 7, 2017
filing date -
Aug 27, 2013
priority date (Note) -
Published
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
A piston assembly for a nailer is provided, and includes a piston body with an upper surface, a lower surface and a peripheral edge. A peripheral gland is located between the upper and lower surfaces, the gland having an inner closed end and defining an annular space. An annular piston seal is disposed in the gland, and a plurality of spaced air ports are disposed adjacent the peripheral edge, the ports each being in fluid communication with the gland. The gland and the seal are dimensioned so that during a power cycle of the nailer, pressurized air generated during a fastener driving stroke enters the ports and radially expands the seal for enhancing friction between the seal and a surrounding cylinder. During a return stroke, the seal is radially retracted within the gland to reduce friction between the seal and the cylinder.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
---|---|---|---|---|---|
US | B2 | US9618116 | Aug 13, 2014 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
GRANTED PATENT AS SECOND PUBLICATION | Ported piston for automatic nailer | Apr 11, 2017 | |||
WO | A1 | WO2015031070 | Aug 14, 2014 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
INTERNATIONAL APPLICATION PUBLISHED WITH INTERNATIONAL SEARCH REPORT | PORTED PISTON FOR AUTOMATIC NAILER RELATED APPLICATION | Mar 05, 2015 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ILLINOIS TOOL WORKS INC | 155 HARLEM AVENUE GLENVIEW IL 60025 |
International Classification(s)

- 2017 Application Filing Year
- B25C Class
- 154 Applications Filed
- 108 Patents Issued To-Date
- 70.13 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mina, Nathan Thomas | Lake in the HIlls, US | 5 | 35 |
# of filed Patents : 5 Total Citations : 35 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- B25C Class
- 0 % this patent is cited more than
- 8 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 27, 2029 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
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