FIRE EXTINGUISHER PRESSURE INDICATOR Russian patent published in 2021 - IPC G01L19/08 

FIELD: instrument engineering.

SUBSTANCE: invention relates to the field of instrumentation, in particular to devices for indicating and measuring the pressure of gaseous or liquid media used in fire extinguishers. The device contains a housing (12), a glass (15), a membrane (11) with an O-ring (13), a dial (10), an axis (2) with a screw section (3) and an arrow (18). Between the projections made on the axis (2) and the housing of the indicator mechanism (8) there is a spring element (1) acting on the membrane (11) of the fire extinguisher pressure indicator. In this case, the spring element (1) is made in the form of a plate spring with bent petals (5) interacting with protrusions (7) made on the axis (2) with the possibility of their mutual rotation, and in the center of the spring element (1) there is a central non-circular hole (4), essentially repeating the profile of the screw section (3) of the axis (2) of the arrow (18).

EFFECT: ability to automate the production of parts and assemblies and increases the quality of the display by increasing the angular movement of the arrow.

3 cl, 2 dwg