Power tool having first elastic member and second elastic member accommodated in first gear
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 7, 2020
Grant Date -
Feb 22, 2018
app pub date -
Feb 26, 2016
filing date -
Mar 31, 2015
priority date (Note) -
In Force
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
To provide a power tool configured to stably rotate an end tool. The provided power tool includes a brushless motor including a rotor configured to rotate; a rectifier circuit configured to rectify an AC voltage; a smoothing capacitor configured to smooth the AC voltage rectified by the rectifier circuit to a pulsating voltage; an inverter circuit configured to perform switching operations to output the pulsating voltage to the brushless motor; a deceleration mechanism including: a driving portion at a rotor side, a driven portion configured to transmit a rotating force to an end tool side, and an elastic member configured to transmit a rotational force of the driving portion to the driven portion, the deceleration mechanism configured to decelerate a speed of a rotation of the rotor and configured to transmit the rotation to an end tool.
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 | |
---|---|---|
KOKI HOLDINGS CO LTD | 15-1 KONAN 2-CHOME MINATO-KU TOKYO 108-6018 |
International Classification(s)

- 2016 Application Filing Year
- H02K Class
- 3008 Applications Filed
- 2169 Patents Issued To-Date
- 72.11 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kumakura, Takeru | Hitachinaka, JP | 10 | 18 |
# of filed Patents : 10 Total Citations : 18 | |||
Kuragano, Shinji | Hitachinaka, JP | 17 | 854 |
# of filed Patents : 17 Total Citations : 854 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- H02K Class
- 0 % this patent is cited more than
- 5 Age
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- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 7, 2028 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 7, 2032 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
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