US 11,719,612 B2
Rotor for rheological measurements of material with variable volume
Reginald Lee, West Chester, PA (US); Amit Ahuja, Wilmington, DE (US); and Sally Childears, Dover, DE (US)
Assigned to TA Instruments-Waters LLC, New Castle, DE (US)
Filed by TA Instruments-Waters LLC, New Castle, DE (US)
Filed on Oct. 8, 2020, as Appl. No. 17/66,013.
Claims priority of provisional application 62/915,266, filed on Oct. 15, 2019.
Prior Publication US 2021/0109002 A1, Apr. 15, 2021
Int. Cl. G01N 11/14 (2006.01); G01N 11/00 (2006.01)
CPC G01N 11/14 (2013.01) [G01N 2011/008 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A rheological system comprising:
a sample chamber;
a compressed air system configured to provide compressed air to pressurize the sample chamber;
a rotor configured for rheological measurement of a material with variable volume, the rotor including an elongated shaft extending to a measurement portion having a widened geometry relative to the elongated shaft;
a parallel visualization chamber connected to the compressed air system, the system configured to maintain the parallel visualization chamber at the same pressure as the sample chamber; and
a camera configured to detect images within the parallel visualization chamber.