Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Cleaning or foaming ability
Patent
1985-04-11
1986-07-22
Levy, Stewart J.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Cleaning or foaming ability
73843, G01N 1100
Patent
active
046011951
ABSTRACT:
Apparatus and method for measuring the viscous component and the elastic component of forces within a viscoelastic test specimen placed in shear, the test specimen being coupled to a platen having a rest position, the platen being displaceable from the rest position rotationally and axially relative to a fixed axis in response to rotational and axial forces exerted by the test specimen upon the platen as a result of the viscous component and the elastic component, the apparatus and method including an arrangement of component parts and a plurality of steps for establishing a rotational counterforce for balancing the rotational force on the platen and simultaneously establishing an axial counterforce for balancing the axial force on the platen to maintain the platen at the rest position, and indicating the magnitude of the counterforces necessary to maintain the platen at the rest position, whereby the viscous component and the elastic component of forces are measured at zero compliance.
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patent: 4302967 (1981-12-01), Dufey
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patent: 4535621 (1985-08-01), Gervais et al.
Levy Stewart J.
Rheometrics, Inc.
Williams Hezron E.
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