Pushbutton moisture meter for determining moisture content in grain
Abstract
Abstract AN AUTOMATIC MOISTURE METER FOR CALCULATING AN INDICATING THE MOISTURE CONTENT OF VARIOUS COMMODITIES. SELECTOR SWITCHES ALLOW THE DEVICE TO BE CHANGED FROM ONE TO A NUMBER OF COMMODITIES. THE READOUT METER FOR INDICATING MOISTURE IS AUTOMATICALLY CALIBRATED TO READ PERCENT OF MOISTURE FOR EACH COMMODITY. THE INVENTION INCLUDES A CAPACITIVE TYPE MOISTURE SENSING CIRCUIT FOR MEASURING THE MOISTURE CONTENT OF GRAIN BUT PROVIDES FOR THE INSERTION OF A SERIES IMPEDANCE WITH A MOISTURE INDICATING METER FOR A PARTICULAR GRAIN WHICH CORRESPONDS TO THE SLOPE OF THE MOISTURE CHARACTERISTIC CURVE OF THAT PARTICULAR GRAIN AND PROVIDES FOR THE INSERTION OF A SECOND IM- PEDANCE IN CIRCUIT WITH THE METER SO AS TO SHIFT THE RESPONSE OF THE SYSTEM TO CORRESPOND TO THE PARTICULAR GRAIN BEING TESTED.
Inventors
- 👤 George H Fathauer
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |