Title:
POWDER LEVEL INDICATOR
Document Type and Number:
WIPO Patent Application WO/1995/029387
Kind Code:
A1
Abstract:
A powder level indicator free from malfunction due to deposition of powder, which indicates a level (capacity) of powder steplessly by using only one sensor. The indicator is disposed inside a powder tank. It includes an ultrasonic sensor attached to an upper cover in such a manner as to face downward inside the powder tank, and a protective pipe provided at the distal end of the ultrasonic sensor. The protective pipe comprises a metallic protective pipe whose inner surface is mirror-finished. The lower end portion of the inner surface of this protective pipe is smoothly rounded.
Inventors:
MORIYAMA TSUYOSHI (JP)
KAKUTA WATARU (JP)
FUKUNAGA KENJI (JP)
KAKUTA WATARU (JP)
FUKUNAGA KENJI (JP)
Application Number:
PCT/JP1995/000807
Publication Date:
November 02, 1995
Filing Date:
April 25, 1995
Export Citation:
Assignee:
NORDSON CORP (US)
MORIYAMA TSUYOSHI (JP)
KAKUTA WATARU (JP)
FUKUNAGA KENJI (JP)
MORIYAMA TSUYOSHI (JP)
KAKUTA WATARU (JP)
FUKUNAGA KENJI (JP)
International Classes:
B65G53/66; G01F23/28; G01F23/296; (IPC1-7): G01F23/28
Foreign References:
| JPS57199918A | 1982-12-08 |
Other References:
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 34504/1978 (Laid-Open No. 137363/1979) (ISAO YAJIMA), 22 September 1979, pages 1-4.
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 33652/1986 (Laid-open No. 14445/1987) (YANMAR AGRICULTURAL EQUIPMENT CO., LTD.), 11 September 1987, pages 4-5.
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 33652/1986 (Laid-open No. 14445/1987) (YANMAR AGRICULTURAL EQUIPMENT CO., LTD.), 11 September 1987, pages 4-5.
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