Impact Tool
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United States of America Patent
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Issued Date -
Dec 25, 2014
app pub date -
Mar 4, 2013
filing date -
Mar 13, 2012
priority date (Note) -
Published
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Importance
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Abstract
An impact tool includes a motor, a hammer, an anvil, and a control unit. The hammer is configured to be driven by the motor and be movable in an axial direction of the motor. The anvil is configured to be struck by the hammer. The control unit is configured to control a rotation of the motor. The impact tool further includes a restricting unit configured to restrict the movement of the hammer in the axial direction. The control unit is configured to select a driving mode of the motor between a first mode and a second mode. The control unit selects the first mode when a load of the motor is less than or equal to a prescribed value regardless of a restriction of the restricting unit, whereas the control unit selects the second mode when the load exceeds the prescribe value and the restricting unit restricts the movement of the hammer.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
HITACHI KOKI CO LTD | TOKYO JAPAN TOKYO METROPOLIS |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mashiko, Hironori | Hitachinaka, JP | 30 | 3825 |
Nakamura, Mizuho | Hitachinaka, JP | 25 | 3805 |
Nishikawa, Tomomasa | Hitachinaka, JP | 119 | 5341 |
Takano, Nobuhiro | Hitachinaka, JP | 120 | 6811 |
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 25, 2026 |
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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