Title: Microwave moisture sensor chute

Abstract: The present invention is directed to a moisture measuring apparatus which comprises a chute means of a given length for receiving moisture containing material, the chute means having window opening means through which microwaves are transmitted. The transmitter means are aligned with first of said window opening means for transmitting microwaves into said material and the microwaves are attenuated by the moisture contained in said material. Receiver means are aligned with second of said window opening means for receiving at least part of the microwaves. The inside of the chute means is lined with microwave absorbent material to reduce microwave reflections in the inside of the chute means.

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Inventors: Pakulis, Ivars E. (Norridge, IL, US)

Application Number: 838505
Filing Date: 1977-10-03
Publication_date: 1978-12-26
Assignee: Kay-Ray, Inc. (Arlington Heights, IL)
Primary Class(es): 324/640 324/690, 342/1
Other Classes:
US Patent Ref:

2426820	Sep, 1947	Evans et al.	343/18.
2977591	Mar, 1961	Tanner	324/58.
3156917	Nov, 1964	Parmeggiani	343/18.
3187331	Jun, 1965	Beller	343/18.
3273150	Sep, 1966	Emerson	343/18.
3308463	Mar, 1967	Emerson	343/18.
3349396	Oct, 1967	Reed	343/18.
3460030	Aug, 1969	Brunton et al.	324/58.
3509568	Apr, 1970	Manning et al.	343/18.
3806943	Apr, 1974	Holloway	343/703.
3818333	Jun, 1974	Walker	324/58.

Other Refs: 253186

Nov, 1970	SU

Primary Examiner: Krawczewicz, Stanley T.
Assistant Examiner:
Attorney: Ricci; Alexander D., Markowitz; Steven H.