Title:
BUBBLE TYPE LINE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2973647
Kind Code:
B2
Abstract:
PURPOSE: To provide a bubble type line display device, which can draw a line always precisely and vividly regardless of the water level without varying the position of the start line, etc.
CONSTITUTION: This device is provided with a header 2 whose two ends are supported by supporting means 1, 1a in such a way as movable vertically and in which a water supply pipe 3 connected with a water supply pump and a compressed air pipe 4 connected with a compressed air source and accommodated; a plurality of nozzle heads 31 which has a water jet opening and an air jet opening, and mounted on the header 2 at a specified spacing while connected with the water supply pipe 3 and compressed air pipe 4; and an opening 51 formed in the lower part. The device is also provided with a plurality of tanks 5, 5a installed at the bottom of the header 2 while connected with the compressed air pipe 4 via an air supply valve 53 and equipped with an air exhaust valve 54 which opens to the inside of the header 2, and further a supporting device 6 installed at the bottom of these tanks 5, 5a or header 2.
Inventors:
NAKAJIMA TOMOYUKI
Application Number:
JP27103991A
Publication Date:
November 08, 1999
Filing Date:
October 18, 1991
Export Citation:
Assignee:
NIPPON KOKAN KK
International Classes:
A63K3/02; (IPC1-7): A63K3/02
Domestic Patent References:
| JP3139385A | ||||
| JP60179086A | ||||
| JP5886198U |
Attorney, Agent or Firm:
Muneharu Sasaki (3 outside)
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