Detection device for detecting and indicating operation of a gas meter
OwnerMotohiro Gotandainventor
Life of this patent
Estimating the term…
Abstract
In the gas meter comprising a housing made of non-magnetic material and provided with gas inlet and outlet, a driver section provided with a rotating member rotated in accordance to the flow amount of gas, and a meter driven by the driver section to display the flow amount of gas, a detector device for detecting whether or not gas is being used in a room or inside a house characterized by a magnetic material attached to the rotating member, by a sensor or sensors attached to the outer face of the housing to detect the rotation of the rotating member, and by a display driven by the output of the sensor to display whether or not gas is being used.
Claims3
In a gas meter comprising a housing provided with a gas inlet and a gas outlet and made of non-magnetic material, a driver section provided with a rotary member which rotates according to the amount of gas flow, and a meter driven by the driver section for indicating the amount of gas flow, a device for detecting whether or not gas is being used in a room or inside a housing, said device comprising a first pair of link arms for transmitting the movement of at least one flow responsive diaphragm and a second pair of link arms for operating at least one changeover valve, said pairs of link arms being swingably attached to a rotary plate, cylindrical magnet attached to a point where the first pair of link arms is swingably attached to the rotary plate;
- sensor means, comprising a plurality of reed switches disposed in a cylindrical arrangement having a vertical axis, for detecting the rotation of the magnet, said reed switches being disposed on the roof of the housing in a configuration corresponding to the path of rotation of the magnet, and a display means driven by output of the sensor means for indicating that a small amount of gas is being used.
Dependencies are inferred from the claim text.