Patent US3237183A successfully refreshed from Google Patents.
US3237183A
Expired / Lapsed
US
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Watchman tour monitoring system
Assignee: Specialties Development Corp
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Filing: 1963-12-16
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Granted: 1966-02-22
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Richard F Eagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:42
CPC Classifications
G; G07; G07C; G07C1/00; G07C1/20; G08; G08B; G08B21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A SYSTEM FOR MONITORING THE MOVEMENTS OF A WATCHMAN THROUGHOUT A TOUR OF A PLURALITY OF CHECK STATIONS TO BE VISITED IN A PREDETERMINED SEQUENCE WITHIN A PREDETERMINED TIME INTERVAL, THE COMBINATION OF A PLURALITY OF SWITCHES EACH AT ONE OF THE STAIONS, A PLURALITY OF RELAYS EACH CONNECTED TO BE OPERATED BY THE OPERATION OF ONE OF SAID SWITCHES, FIRST AND SECOND CONTACT SETS ON EACH OF SAID RELAYS, SAID FIRST CONTACT SET OF EACH RELAY BEING INTERCONNECTED WITH SAID SECOND SET OF THE NEXT RELAY IN THE SEQUENCE, AN INDICATING CIRCUIT CONNECTED TO SAID INTERCONNECTED CONTACT SETS FOR GIVING AN INDICATION IF ANY RELAY IS OPERATED BEFORE THE PREVIOUS RELAY IN THE SEQUENCE IS OPERATED, A SECOND INDICATING CIRCUIT, A PLURALITY OF TIME
Claim 2
Dependent Claim
126 words
IN A SYSTEM FOR MONITORING THE MOVEMENTS OF A WATCHMAN THROUGHOUT A TOUR OF A PLURALITY OF CHECK STATIONS TO BE VISITED IN A PREDETERMINED SEQUENCE WITHIN A PREDETERMINED TIME INTERVAL, THE COMBINATION OF A PLURALITY OF SWITCHES EACH AT ONE OF THE STAIONS, A PLURALITY OF RELAYS EACH CONNECTED TO BE OPERATED BY THE OPERATION OF ONE OF SAID SWITCHES, FIRST AND SECOND CONTACT SETS ON EACH OF SAID RELAYS, SAID FIRST CONTACT SET OF EACH RELAY BEING INTERCONNECTED WITH SAID SECOND SET OF THE NEXT RELAY IN THE SEQUENCE, AN INDICATING CIRCUIT CONNECTED TO SAID INTERCONNECTED CONTACT SETS FOR GIVING AN INDICATION IF ANY RELAY IS OPERATED BEFORE THE PREVIOUS RELAY IN THE SEQUENCE IS OPERATED, A SECOND INDICATING CIRCUIT, A PLURALITY OF TIME
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |