Stress distribution measurement device and stress distribution measurement method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11513013
APP PUB NO 20210063255A1
SERIAL NO

17008838

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A stress distribution measurement device includes: a first magnetostrictive sensor and a second magnetostrictive sensor each including an excitation coil that excites AC magnetism in a measurement target using alternating current, and a detection coil to which alternating current is induced due to the AC magnetism flowing in the measurement target; an excitation circuit that applies a first excitation voltage to the excitation coil of the first magnetostrictive sensor and applies a second excitation voltage to the excitation coil of the second magnetostrictive sensor, the second excitation voltage having a phase or a waveform different from the first excitation voltage; and a detection circuit that includes a first detector that performs synchronous detection of current flowing in the detection coil of the first magnetostrictive sensor based on the first excitation voltage and a second detector that performs synchronous detection of current flowing in the detection coil of the second magnetostrictive sensor based on the second excitation voltage.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • HITACHI, LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Endo, Hisashi Tokyo, JP 38 215
Kakeno, Nobuhiro Tokyo, JP 9 3
Kitaoka, Masanori Tokyo, JP 4 0
Yamada, Toshihiro Tokyo, JP 73 693
Yoshikawa, Hiroshi Tokyo, JP 157 1563

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 May 29, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 May 29, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 May 29, 2034
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