Shear resistant bin level indicator

Details Shear resistant bin level indicator Shear resistant bin level indicator

2007-11-01

2009-08-25

Lee, Kyung (Department: 2833)

Electricity: circuit makers and breakers

Special application

Container contents level responsive

C200S061210, C073S29000R, C340S621000

Reexamination Certificate

active

07579564

ABSTRACT:
A device for indicating a level of a bulk material in a bin. A motor imparts a swinging motion to a paddle located inside the bin. When the paddle engages the material, drag on the paddle causes a counteracting force on the motor, indicating a presence of material at the location of the device. In various embodiments, a paddle shaft, having very little exposure inside the bin, extends from a protective enclosure. The shaft is capped with a flexible section having the paddle attached to it. The paddle is at a downward angle relative to the paddle shaft and extends into the bin so as to engage the material. The paddle may move at an urging of the material so as to avoid damage to the paddle, flexible section, and shaft.

REFERENCES:
patent: 2116075 (1938-05-01), Lenhart
patent: 3210493 (1965-10-01), Lau
patent: 3210495 (1965-10-01), Lau
patent: 3436059 (1969-04-01), Donaldson
patent: 3542982 (1970-11-01), Gruber
patent: 3721971 (1973-03-01), Gruber
patent: 4375020 (1983-02-01), Holterbosch
Bindicator Installation, p. 2, col. 1, midway down, paragraph “A. On a 7” bolt circle . . . USA, Published Mar. 2003.
Monitor Bulletin 214A, p. 2, col. 1, near bottom, paragraph “Protective Baffles: (See Figure 2) . . . ” USA, Published Apr. 2006.
Monitor Bulletin 534A, p. 3, col. 1, top, paragraph “Proactive Baffles: (See Figure 4) . . . ” USA, Published Nov. 2004.

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