Load cells with integral damping

Details Load cells with integral damping Load cells with integral damping

1995-01-26

1999-03-09

Williams, Hezron E.

Weighing scales

Shock absorber, damper

Load-holder transmission mechanism

177229, G01G 2110, G01G 308

Patent

active

058804102

ABSTRACT:
A load cell for weighing purposes which incorporates viscous damping inside a chamber in the body of the load cell. Specifically, symmetrical load cells have a central member which is where the load or weight is applied. This member is deflected under load as is common to all load cells, creating a distance change between said member and the static or fixed part of the load cell and in which the fixed part is used for mounting on a base holding the load cell. A round cavity or a cylinder space built into the static part accepts a piston which in turn is rigidly connected to the deflected part. Thus, upon loading, the piston has a slight movement relative to the cylinder. If a viscous fluid is then placed in the cavity such that the piston is immersed in it, a viscous damping will be achieved; its intensity depending on the fluid's viscosity, the geometry of the piston and cylinder, and on the load cell characteristics.

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patent: 4799561 (1989-01-01), Komoto
patent: 4848495 (1989-07-01), Hayashi
patent: 5141064 (1992-08-01), Willemsen et al.
patent: 5232062 (1993-08-01), Neuman

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