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Patent US3594579A successfully refreshed from Google Patents.
US3594579A
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Device and method using gamma rays for size and density produce selection
Assignee: University of California Berkeley
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Filing: 1968-06-06
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Granted: 1971-07-20
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Expires: 1988-06-06
Abstract
Abstract A produce selector for harvesting produce moves a radiation source (viz. gamma rays) relative to the produce with a collimated pencil of radiation travelling through the produce to a receiver on the other side of the produce. The response of the receiver is a direct signal. This may be integrated to provide an indirect signal. These signals are used individually or together to afford a final response. A response exceeding a threshold value can be used to actuate a harvester. The method of selecting produce involves sending a signal through the produce, the signal being attenuated in accordance with the density and size (viz. thickness), and determining the value of the attenuated signal.
Inventors
- 👤 Roger E Garrett
- 👤 Wilson K Talley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
G; G01; G01B; G01B15/00; G01B15/02; G01B15/025; G01N; G01N23/00; G01N23/02; G01N23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3368593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |