Patent · US Active

Apparatus and method for measuring fixing force

US9261421B2 · kind B2 · utility

0Cited by

3References

12Claims

0Family size

Assignee

MITSUBISHI HITACHI POWER SYSTEMS, LTD. · JP

Inventors

Yoshitaka Tsutsui · Yokohama, JP
Nobuaki Nakasu · Kawasaki, JP
Keiji Suzuki · Okazaki, JP
Kengo Iwashige · Hitachi, JP
Mitsuru Onoda · Takahagi, JP
Harumasa Tsuchiya · Hitachi, JP
Yasuaki Kageyama · Hitachi, JP

Key dates

Filing date	Dec 10, 2013
Grant date	Feb 16, 2016
Priority date	—
Expiry date	Feb 21, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01N3/30
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A fixing force measuring apparatus including a section for applying a predetermined controlled hammering force to a wedge surface to generate a hammering sound, a section for controlling the hammering sound generated, a section for obtaining plural kinds of feature quantities such as a feature quantity due to a hammering sound energy, and a feature quantity due to a frequency of the hammering sound from the hammering sound collected by an arithmetic operation, and a section for obtaining a fixing force corresponding to the plural kinds of feature quantities by using a correlative relationship between the wedge fixing force previously obtained, and the plural kinds of feature quantities.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.