Construction machine

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12215483
APP PUB NO 20230098211A1
SERIAL NO

17908985

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A wheel loader 1 as a construction machine has a hydraulically driven working device 2 and a controller 5,5A for measuring the weight of a load, wherein the wheel loader 1 includes a changeover switch 121 as a changeover device for switching whether to measure the weight of the load, and in a case where an attitude of the working device 2 satisfies a predetermined load measurement condition, the changeover switch 121 is valid, and pistons 222, 242 are positioned in a first area provided on one end side or in a second area provided on the other end side, the controller 5, 5A limits the command current to be output to lift arm solenoid proportional valves 45 and the bucket solenoid proportional valves 46.

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First Claim

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Family

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Patent Owner(s)

  • HITACHI CONSTRUCTION MACHINERY CO., LTD.

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Kazuyuki Kobe, JP 94 1011

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Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Aug 4, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 4, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 4, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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