Measuring and testing – Dynamometers – Responsive to force
Patent
1994-03-04
1995-08-08
Chilcot, Richard
Measuring and testing
Dynamometers
Responsive to force
73862637, 73862541, G01L 104
Patent
active
054388830
ABSTRACT:
A computer controlled, laboratory heat-sealing machine is employed as a quality control device to ensure that adequate heat seals are formed under pre-defined and outputted pressure, dwell time and temperature parameters. The apparatus includes sensors for monitoring temperature and pressure conditions throughout the sealing dwell period. The clamping pressure is constantly adjusted to be maintained at a preset level by sensing the clamping pressure and controlling the top heat-sealing bar through an eccentrically driven crankshaft linkage. Load cell arrangements for monitoring pressure in high and low pressure ranges are also disclosed.
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Chilcot Richard
Dougherty Elizabeth L.
McDonald Alan T.
Reynolds Metals Company
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