Title:
PIPING FOR PNEUMATICALLY TRANSPORTING PARTICULATE AT HIGH CONCENTRATION
Document Type and Number:
Japanese Patent JP2002265043
Kind Code:
A
Abstract:
To prevent duplication of a plug in pneumatic transportation piping.
A constricted part 21 has an upper part, an intermediate part, and a lower part, and is characterized in that these parts are continuously formed, the lower part gradually becomes narrow upward in the cross-sectional area, and becomes the minimum cross-sectional area in the intermediate part, and the upper part becomes gradually becomes large upward in the cross-sectional area. A funnel shape or a trumpet shape and a taper shape indicated in drawings 2 and 3, a gourd shape indicated in a drawing 4 (a), and a web shape indicated in a drawing 4 (b) are cited as a shape. A double tube structure may be formed by hollowing out the inside of a block material.
Inventors:
KATO FUMIO
Application Number:
JP2001067891A
Publication Date:
September 18, 2002
Filing Date:
March 09, 2001
Export Citation:
Assignee:
TSUKASA IND
International Classes:
B65G53/06; B65G53/52; (IPC1-7): B65G53/06; B65G53/52
Domestic Patent References:
| JPS6192634A | 1986-05-10 | |||
| JPS6136796A | 1986-02-21 | |||
| JPS6221626A | 1987-01-30 | |||
| JPS60103107A | 1985-06-07 |
Foreign References:
| WO1989009173A1 | 1989-10-05 |
Attorney, Agent or Firm:
Takahiro Ozaki