Plastic orientation measurement instrument
AssigneeThe Standard Oil Company
InventorsNorman W. Standish, Herbert Talsma
Life of this patent
Estimating the term…
Abstract
An apparatus for measuring degree of orientation in small oriented plastic samples which operates on the principle of measurement of dimensional changes in the samples before, during and after they pass through the temperature range at which the samples' relax is described.
Claims4
An apparatus for measuring dimensional change at elevated temperature in a sample of oriented thermoplastic material comprising means for holding said sample means for heating said sample, sensing means attached to a ring-like structure which is supported by a knife edge at the end of a beam balance which in turn is supported on a knife edge, said means having an essentially zero loading value and being connected to said holding means for sensing and tracking changes in the dimensions of said sample which may take place during the heating of said sample.
Dependencies are inferred from the claim text.