Rotary viscosimeter
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United States of America Patent
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-
Feb 22, 1994
Grant Date -
N/A
app pub date -
Jun 2, 1992
filing date -
Oct 3, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary viscosimeter has a control mode for measuring the viscosity of a liquid by a spring relaxation method and a control mode for measuring the viscosity by rotating a rotor 6a at a constant speed. In this rotary viscosimeter, a driving power is transmitted from a driving power source to a rotor shaft 5b via a spring 4a for rotating the rotor 6a. The rotor shaft 5b is supported on a pivot 11 and a bearing 12. When the viscosity is measured by the spring relaxation method, locking of the rotor shaft 5b is released after the spring 4a is biased while the rotor shaft 5b has been locked. When measurement of the viscosity is performed by rotating the rotor 6a at a constant speed, the rotor 6a is rotated while the locking of the rotor shaft 5b is released. When measurement is not being performed, the rotor shaft 5b is locked and the pivot 11 is separated from the bearing 12.
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