Title:
RUNNING WATER DETECTOR
Document Type and Number:
Japanese Patent JP3540463
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To output an operation signal surely even when the opening of a valve body is small, by making such a constitution that a switch may be made ON by rotating the operation lever of a second operation spindle through the cam member of an operation spindle projecting to the outside, at the time of the valve body opening.
SOLUTION: A valve body 25 is closed when the pressure of a primary side and the pressure of a secondary side are equal to each other, and opened by means of a water current when the secondary side is depressurized. In the case of an operation valve such as above, when the valve body 25 is opened, an end part 25A is rotated with an operation spindle 24 as a fulcrum, so a link member 40, is rotated due to the operation of a weight 42 while a projecting part 40A is butting against the end part 25A, and an operation spindle 38 is also rotated. In linkage with this, an operation lever 41 is rotated from an A position to a B position, and an operation signal to indicate the opening operation of the valve body 25 is outputted. At this time, the turning angle of the operation lever 41 is made small in comparison with the opening of the valve body 25, so even if the opening of the valve body 25 is small, a limit switch is made ON by the operation of the operation lever 41.
Inventors:
Tonomura Kenaki
Application Number:
JP25963195A
Publication Date:
July 07, 2004
Filing Date:
October 06, 1995
Export Citation:
Assignee:
Hochiki Corporation
International Classes:
A62C37/50; G01P13/00; (IPC1-7): A62C37/50; G01P13/00
Domestic Patent References:
| JP5416678B2 | ||||
| JP58174777A | ||||
| JP747147A |
Attorney, Agent or Firm:
Susumu Takeuchi
Saichiro Miyauchi
Saichiro Miyauchi