Gap filler for rheometer

Details Gap filler for rheometer Gap filler for rheometer

1975-01-27

1976-02-03

Queisser, Richard C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Cleaning or foaming ability

G01N 1110

Patent

active

039357295

ABSTRACT:
A coaxial cylinder rheometer having a very small (less than 0.020 inches [0.0508 cm]) gap between the concentric cylinders and being capable of charging highly viscous (greater than 100,000 poise) and/or thermally sensitive materials, e.g., Polyvinyl Chloride, Polyurethane, etc., into this gap for testing. The inner cylinder, rotor, comprises a single element which can be driven axially and rotationally. The outer cylinder, stator, comprises an upper part having a projection-like ring on its lower surface and a lower part having a trough-like ring in its upper surface. The two parts are fastened together with mating screw threads on each part. The material to be tested is deposited in the trough-like ring in the lower part and the two parts are screwed together into an operational position wherein simultaneously the projection-like ring moves into the trough-like ring extruding the flowable material therebetween into the gap between the coaxial cylinders and the bottom and top edges of the inner surfaces of the upper and lower parts, respectively, come together to form a complete and uninterrupted outer cylinder inner surface.

REFERENCES:
patent: 2812656 (1957-11-01), Merrill

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