MANOMETER-INDICATOR Russian patent published in 2003 - IPC

FIELD: instrumentation engineering, manometers and visual pressure indicators, in particular. SUBSTANCE: invention can be employed to check pressure value in pneumatic repeating rifles and pistols. According to invention manometer has case with hole through which end ( of round, oval or sickle-shaped cross- section ) of manometric tube manufactured in the form of double-row helical spiral with axial or inclined arrangement of turns in cross-section passes, is fixed and through which pressure is fed. First turn embraces last turns. Second free and soldered end o tube comes in the form of pointer ( or pointer is fixed on it ) and is used to take readings from scale. EFFECT: possibility to ensure high stiffness of manometric tube and to limit its deviation under shocks, vibrations and pressure overloads. 2 dwg