Title: Strain gauge flexure isolated weighing scale

• Summary
• Claims
• Description
• View all

Abstract: The scale includes a horizontal load plate and base plate supported in spaced parallel relationship by first and second generally rectangular load members lying in vertical spaced planes extending between the corners of the load plate and base plate. Opposite end portions of each rectangular load member are symmetrical about a vertical axis passing midway therethrough, these opposite end portions defining corner flexure supports connected between central body portions of the rectangular load members and end posts. The end posts connect to the load plate and the bottom of the central body portions of the members rest on the base plate. Each corner flexure support means includes specially designed flexure webs which will flex under a load on the base plate. Strain gauges attached to certain ones of the flexure webs provide electrical read-out signals constituting a function of a force applied to the load plate. The overall design of each of the corner flexure support means is such that the strain gauges are isolated from extraneous strains resulting from off-center application of a force on the load plate. Different electrical bridge configurations may be used for providing the read-out signal from the strain gauges.


Do you think this is a good invention? Vote now: