Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1988-11-03
1990-05-29
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Diaphragm
73720, G01L 708, G01L 904
Patent
active
049285297
ABSTRACT:
The present invention entails a force multiplying instrument that functions to multiply an input force, such as input pressure signal. A substantially constant area membrane is preshaped to assume a concave-convex shape and is disposed within a housing structure where it extends across an open chamber within the housing structure and is secured about its periphery by the side walls of the housing structure. For positive multiplication, a force sensing system is disposed on the concave side of the membrane and actually extends into engagement with the membrane for supporting the same about the concave side. Because the membrane is preshaped, it extends inwardly at a selected angle relative to the horizontal plan of the periphery of the membrane secured within the housing. The force applied to the convex side of the membrane and transferred against the force sensing system is multiplied because of the angle of the membrane and the position of the force sensing system. In an alternate embodiment a flat membrane is used.
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