Displacement and force sensor

Details Displacement and force sensor Displacement and force sensor

2006-01-24

2006-01-24

Ellington, Alandra (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specimen clamp, holder, or support

C073S847000, C073S852000, C073S853000

Reexamination Certificate

active

06988417

ABSTRACT:
An apparatus for measuring the displacement of visco-elastoplastic media below a surface thereof comprises an upper plate mounted such that a displacement force exerted on the top surface thereof will move the upper plate a displacement distance downward toward a base. Guides maintain the upper plate and the base in alignment such that movement is along a displacement axis. A calibrated bias element exerts a calibrated bias force resisting movement of the upper plate toward the base. A displacement measuring device measures the displacement distance, and is operative to generate a movement signal corresponding to the displacement distance. A data acquisition system is operative to receive and record the movement signal, and calculate the displacement force exerted on the top surface of the upper plate required to move the upper plate the displacement distance against the calibrated bias force.

REFERENCES:
patent: 4196618 (1980-04-01), Patterson
patent: 4266878 (1981-05-01), Auer
patent: 5269190 (1993-12-01), Kramer et al.
patent: 5305634 (1994-04-01), Suga et al.
patent: 2003/0188585 (2003-10-01), Esser et al.

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