MANOMETRIC TUBULAR SPRING Russian patent published in 1997 - IPC

FIELD: measurement technology. SUBSTANCE: invention is related to elastic sensitive members used in instruments measuring pressure, specifically in those operating under conditions of vibrations and forced modes. Spring has section varying over length, changing smoothly from elliptical one on free end to eight-shaped one on anchored end. Section of free end of spring has form of ellipse. With approach to free end each next section has ratio of minor semi-axis b to radius r of rounding - b/r bigger than preceding one smoothly passing to plane-oval and later to eight-shaped one. EFFECT: increased sensitivity, relative rigidity and strength of tubular spring. 2 dwg