Title:
WORKING PRESSURE MEASUREMENT DEVICE
Document Type and Number:
Japanese Patent JP2013228224
Kind Code:
A
Abstract:
To provide a working pressure measurement device having different measurement ranges in which working pressure differing in range can be measured.
A working pressure measurement device includes: a measurement rod 6 for measuring pressing pressure; springs compressed as the measurement rod 6 is operated so as to measure the pressing pressure; and a housing 2 which holds the spring inside, the housing 2 holding a plurality of springs 5a and 5b differing in spring constant inside. The working pressure measurement device includes a selective compression member 8 which compresses only a spring to be used for measurement between the plurality of springs 5a and 5b as the measurement rod 6 is operated.
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Inventors:
KOZONO ATSUSHI
HOSOKAWA KIYOFUMI
HOSOKAWA KIYOFUMI
Application Number:
JP2012099020A
Publication Date:
November 07, 2013
Filing Date:
April 24, 2012
Export Citation:
Assignee:
HITACHI BUILDING SYS CO LTD
International Classes:
G01L1/04; B66B29/00; B66B29/04
Domestic Patent References:
| JP2002274773A | 2002-09-25 | |||
| JPH11255465A | 1999-09-21 | |||
| JPH0930766A | 1997-02-04 | |||
| JPH06278983A | 1994-10-04 | |||
| JPS50147393U | 1975-12-06 |
Foreign References:
| US5392649A | 1995-02-28 | |||
| FR2674956A1 | 1992-10-09 |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office