US3078442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic control system
Assignee: Crouse Hinds Co
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Filing: 1960-03-28
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Granted: 1963-02-19
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Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 Walter M Jeffers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:38
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/07; G08G1/081; G08G1/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A TRAFFIC CONTROL SYSTEM INCLUDING A MASTER SUPERVISORY CONTROLLER AND A PLURALITY OF SECONDARY INTERSECTION CONTROLLERS, THE IMPROVEMENT COMPRISING MEANS FOR ENERGIZING A PLURALITY OF TRAFFIC CONTROL CIRCUITS IN SAID SECONDARY CONTROLLERS FROM SAID MASTER CONTROLLER COMPRISING A SINGLE FUNCTION CONTROL WIRE INTERCONNECTING SAID MASTER AND SECONDARY CONTROLLERS, MEANS IN SAID MASTER CONTROLLER FOR TRANSMITTING OVER SAID SINGLE FUNCTION CONTROL WIRE TO SAID SECONDARY CONTROLLERS VOLTAGE PULSES OF FULL LINE VALUE HAVING A FIRST POLARITY AND NEGATIVE VOLTAGE PULSES OF FULL LINE VALUE AND AT LEAST TWO SELECTED VOLTAGE PULSES OF THE OPPOSITE POLARITY, ONE OF SAID SELECTED PULSES BEING OF FULL LINE VALUE AND THE OTHER OF SAID SELECTED PULSES BEING SUBSTANTIALLY LESS THAN FULL LINE VALUE TO EFFECT MORE THAN TWO TRAFFIC CONTROL FUNCTIONS, MEANS IN EACH OF SAID SECONDARY CONTROLLERS BEING RESPONSIVE TO SAID POSITIVE FULL LINE VALUE VOLTAGE PULSES AND SAID NEGATIVE FULL LINE VALUE AND LESS THAN FULL LINE VALUE VOLTAGE PULSES TO SELECTIVELY ENERGIZE MORE THAN TWO OF SAID TRAFFIC CONTROL CIRCUITS.
Claim 2
Dependent Claim
169 words
IN A TRAFFIC CONTROL SYSTEM INCLUDING A MASTER SUPERVISORY CONTROLLER AND A PLURALITY OF SECONDARY INTERSECTION CONTROLLERS, THE IMPROVEMENT COMPRISING MEANS FOR ENERGIZING A PLURALITY OF TRAFFIC CONTROL CIRCUITS IN SAID SECONDARY CONTROLLERS FROM SAID MASTER CONTROLLER COMPRISING A SINGLE FUNCTION CONTROL WIRE INTERCONNECTING SAID MASTER AND SECONDARY CONTROLLERS, MEANS IN SAID MASTER CONTROLLER FOR TRANSMITTING OVER SAID SINGLE FUNCTION CONTROL WIRE TO SAID SECONDARY CONTROLLERS VOLTAGE PULSES OF FULL LINE VALUE HAVING A FIRST POLARITY AND NEGATIVE VOLTAGE PULSES OF FULL LINE VALUE AND AT LEAST TWO SELECTED VOLTAGE PULSES OF THE OPPOSITE POLARITY, ONE OF SAID SELECTED PULSES BEING OF FULL LINE VALUE AND THE OTHER OF SAID SELECTED PULSES BEING SUBSTANTIALLY LESS THAN FULL LINE VALUE TO EFFECT MORE THAN TWO TRAFFIC CONTROL FUNCTIONS, MEANS IN EACH OF SAID SECONDARY CONTROLLERS BEING RESPONSIVE TO SAID POSITIVE FULL LINE VALUE VOLTAGE PULSES AND SAID NEGATIVE FULL LINE VALUE AND LESS THAN FULL LINE VALUE VOLTAGE PULSES TO SELECTIVELY ENERGIZE MORE THAN TWO OF SAID TRAFFIC CONTROL CIRCUITS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |