Web tension transducer arrangement

Details Web tension transducer arrangement Web tension transducer arrangement

1980-02-25

1982-04-27

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

7386265, G01L 510

Patent

active

043264247

ABSTRACT:
A web tension transducer device which is easily in-installed, has a high natural frequency, excellent linearity, and extremely low hysteresis. A twin beam type transducer having strain gages at the flex points of the beams is coupled to the shaft supporting the moving web through a self-aligning anti-friction bearing, the strain gages being so located and electrically connected that effects of friction in the bearing due to bending of the shaft are automatically cancelled out in the circuitry in which the strain gages are connected. The self-aligning bearing coupling is arranged to permit relative axial displacement between the shaft and the twin beam transducer for accommodating comparatively large amounts of shaft expansion. The bearing also may have a bearing surface liner comprised of a low coefficient of friction thermoplastic resin material such as teflon fiber or teflon fiber-filled acetal resin fabric.

REFERENCES:
patent: 3439761 (1969-04-01), Laimins
patent: 3763701 (1973-10-01), Wright et al.
patent: 3927560 (1975-12-01), Farr
patent: 4052891 (1977-10-01), Bartlett
patent: 4130014 (1978-12-01), Eddens

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