Title:
気泡管および水準器
Document Type and Number:
Japanese Patent JP7179332
Kind Code:
B2
Abstract:
To provide a bubble tube of a level vial capable of suppressing deviation of a shaft for volume reduction in a container and positioning easily the shaft in the container.SOLUTION: A bubble tube 10 of the invention comprises: a container 11 whose one end is an opening end 11b and the other end is a closed end 11a and is formed into a cylindrical and transparent container; a lid 12 for closing the opening end 11b of the container 11; a shaft 13 whose one end is fixed to the lid 12 and the other end extends in the container 11 toward the closed end; and a liquid which filling a space between the shaft 13 in the container 11 while leaving a gap so as to form a bubble. The other end of the shaft 13 is fitted into a recess 11c provided on the closed end 11a of the container 11. Since the shaft 13 is fixed to the lid 12, deviation of the shaft in the container 11 can be prevented. When the opening end 11b of the container 11 is closed with the lid 12, the shaft 13 integrated to the lid 12 is inserted into the container 11 and an end part of the shaft is almost automatically fitted to the recess 11c, the shaft 13 can be easily positioned in the container 11.SELECTED DRAWING: Figure 3
Inventors:
Kodera Kenki
Application Number:
JP2019023298A
Publication Date:
November 29, 2022
Filing Date:
February 13, 2019
Export Citation:
Assignee:
Akatsuki Seisakusho Co., Ltd.
International Classes:
G01C9/26
Domestic Patent References:
| JP672009U | ||||
| JP5487353B1 | ||||
| JP31133B1 | ||||
| JP200510129A | ||||
| JP311725B1 | ||||
| JP10234997A |
Attorney, Agent or Firm:
Naoya Kamada
Bunji Kamata
Bunji Kamata