Apparatus for sensing moving particles or small moving objects

Details Apparatus for sensing moving particles or small moving objects Apparatus for sensing moving particles or small moving objects

1976-08-09

1979-04-17

Ciarlante, Anthony V.

Measuring and testing

Miscellaneous

56DIG15, G01N 2900

Patent

active

041494156

ABSTRACT:
A detector for sensing the presence of grain in straw or chaff discharged from a combine has an elongated flat target plate extending across the machine. It is mounted on a relatively massive base through the intermediary of longitudinal resilient strips, which allow transverse bending. Transducers mounted on the reverse side of the plate provide an output from which sharp, grain impact signals can be filtered. The resilient strips are best arranged along nodes of a selected harmonic, preferably the second, of the transverse bending vibrations of the plate. The detector can be used generally for sensing small particles.

REFERENCES:
patent: 2386279 (1945-10-01), Tibbetts
patent: 2578620 (1951-12-01), Wilhelm
patent: 3515144 (1970-06-01), Morrison
patent: 3853199 (1974-12-01), Hirashima et al.
patent: 3939846 (1976-02-01), Drozhzhin et al.
patent: 4004289 (1977-01-01), Kirk
patent: 4036065 (1977-07-01), Strelioff et al.
patent: 4047427 (1977-09-01), Young

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