Dispensing – Automatic control – Delivery from source controlled by quantity in discharging...
Patent
1981-01-15
1983-08-30
Bartuska, F. J.
Dispensing
Automatic control
Delivery from source controlled by quantity in discharging...
73304R, 324158P, 340617, G01F 2324
Patent
active
044012373
ABSTRACT:
Apparatus for monitoring the depth of granular material in a container or on a carrier includes a unique probe tip and complementary apparatus, which includes a support, a positioning mechanism and a cleaner, to which the tip is fastened. The probe tip is comprised of an electrically conductive metallic strip having a metallic grid attached to one end and electrical connections at the opposite end for electrically connecting the strip to electronic equipment. The strip is enclosed in an electrically insulating sheath. A section of the sheath having a known surface area and thickness and contiguous with the metallic grid is filled with electrically conducting material. The ratio of the surface area of the section to its thickness is not less than about 20. The section has a thickness of not more than about 1.0 centimeter. The electrical resistivity of the section can be between about 0.1 and 10 megohms/cm.sup.2.
REFERENCES:
patent: 2541576 (1951-02-01), Detuno
patent: 3124771 (1964-03-01), Rohrback
patent: 3184970 (1965-05-01), McNelly
patent: 3893027 (1975-07-01), Veenendaal
patent: 4318042 (1982-03-01), Eda et al.
Bartuska F. J.
Bethlehem Steel Corporation
Iverson John I.
Simitz John S.
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