Suspended-cable apparatus for measuring a preselected condition

Details Suspended-cable apparatus for measuring a preselected condition Suspended-cable apparatus for measuring a preselected condition

1985-09-16

1987-06-30

Frankfort, Charles

Measuring and testing

Liquid level or depth gauge

248317, 248328, G01F 2320

Patent

active

046760997

ABSTRACT:
Apparatus for indicating a preselected condition of material in a vessel which includes a laid wire cable vertically suspended within the vessel so as to contact and be surrounded by material contained therein. The laid wire cable is suspended by a roller-type thrust bearing which permits free rotation of the cable and thus prevents torsional sheer stresses on the suspended cable end due to tension in the cable and consequent unraveling and reraveling of the cable lays. In a preferred embodiment of the invention wherein the upper end of the cable is selectively slackened and material level is determined as a function of weight of the slackened cable end unsupported by material, a spherical head is affixed to the cable to seat against and cooperate with a side-thrust washer slidably carried on the foot of a load cell for isolating the load cell from lateral cable forces due to material or component tolerance variations. A slip ring assembly may be attached to the cable for providing direct electrical connection thereto.

REFERENCES:
patent: 182089 (1876-09-01), Warner
patent: 795739 (1905-07-01), Stollar
patent: 807100 (1905-12-01), Wood
patent: 1444542 (1923-02-01), Grossheim
patent: 2647398 (1953-08-01), Marvel
patent: 3583221 (1971-06-01), Ehrenfried
patent: 4276774 (1981-07-01), McGookin
patent: 4307547 (1981-12-01), Kern

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