Invention Grant
- Patent Title: Liquid quality checking device and liquid storage tank provided with the device
- Patent Title (中): 装有液体质量检查装置和储液箱
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Application No.: US13984993Application Date: 2012-02-06
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Publication No.: US09046502B2Publication Date: 2015-06-02
- Inventor: Takashi Chikamune
- Applicant: Takashi Chikamune
- Applicant Address: JP Tokyo
- Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
- Current Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Volpe and Koenig, P.C.
- Priority: JP2011-033088 20110218
- International Application: PCT/JP2012/052630 WO 20120206
- International Announcement: WO2012/111469 WO 20120823
- Main IPC: G01N33/487
- IPC: G01N33/487 ; G01N33/00 ; G01N21/29 ; G01N21/78 ; G01N33/28 ; G01J3/52

Abstract:
A deterioration checking device (2) includes a sight glass (3) through which deterioration of a biofuel stored in a fuel tank is observable as a change in the color of the biofuel, and first and second benchmark sections (4a, 4b) each of which three color samples (11a, 11b, 11c) corresponding to different degrees of deterioration of the biofuel are arranged along the sight glass (3). Deterioration is determined by observing the color samples (11a, 11b, 11c) through the biofuel in the sight glass (3). The arrangement of the color samples (11a, 11b, 11c) of the first benchmark section (4a) and that of the color samples (11a, 11b and 11c) of the second benchmark section (4b) are reversed to each other, so as to cope with the lowering of the liquid level of the biofuel and the rising of the liquid level of a water layer.
Public/Granted literature
- US20130312497A1 LIQUID QUALITY CHECKING DEVICE AND LIQUID STORAGE TANK PROVIDED WITH THE DEVICE Public/Granted day:2013-11-28
Information query