FIELD: springy sensitive elements used in instruments measuring pressure. SUBSTANCE: manometric tubular spring has asymmetrical cross-section relative to its major axis which smoothly changes along longitudinal axis of spring. Outer contour of cross-section smoothly changes from flat- oval shape on free end of spring to shape of eight on fixed end of spring and inner contour of cross-section changes smoothly from elliptic shape on free end of spring to flat-oval shape on fixed end of spring. EFFECT: raised service life and operational reliability of manometric tubular spring. 3 dwg
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