US3706027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Materials counting system utilizing permanent magnets and their associated fields
Assignee: Individual
•
Filing: 1971-07-13
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Granted: 1972-12-12
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Expires: 1991-07-13
Abstract
Abstract A SYSTEM FOR COUNTING PIECES OF LAUNDRY, OR THE LIKE, BY ATTACHING A PERMANENT MAGNET TO EACH PIECE AND PASSING THE PIECES THROUGH A CONVEYOR WITH MAGNETIC FIELD DETECTOR MOUNTED THEREON TO GENERATE PULSES CORRESPONDING TO THE PIECES AS THEY PASS BY, THE PULSES ARE COUNTED BY A COUNTER CIRCUIT ARRANGED TO UTILIZE THE SIGNAL ONLY IF THEIR STRENGTH EXCEEDS A PREDETERMINED LOWER THRESHOLD VALUE AND DO NOT EXCEED A PREDETERMINED UPPER LIMIT VALUE, IN ONE EMBODIMENT THE SYSTEM IS DESIGNED TO UTILIZE A SIGNAL DETERMINED BY AN INTERVAL OF TIME IN THE VICINITY OF MAXIMUM DETECTED FIELD RATHER THAN THE TOTAL SIGNAL RECEIVED.
Inventors
- 👤 Karl R Grice Jr
- 👤 Dan M Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:12
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; G06M1/10; G06M1/108; G06M7/00; Y; Y10; Y10S; Y10S209/00; Y10S209/937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |