US3302170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic light control buffer
Assignee: International Business Machines Corp
•
Filing: 1964-04-28
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Granted: 1967-01-31
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Expires: 1984-04-28
Abstract
No abstract record available.
Inventors
- 👤 Robert A Jensen
- 👤 Wilbur J Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/07; G08G1/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A TRAFFIC LIGHT CONTROL SYSTEM, CONTROLLER MEANS AND STEPPING SWITCH MEANS, SAID CONTROLLER MEANS ACTUATING SAID SWITCH MEANS FOR ADVANCING A TRAFFIC LIGHT DISPLAY THROUGH A CYCLE INCLUDING A PLURALITY OF LIGHT ENERGIZING PERIODS IN RESPONSE TO A SERIES OF CLOCK PULSES, SAID CONTROLLER MEANS COMPRISING: A PLURALITY OF REGISTERS, EACH ONE CAPABLE OF STORING NUMBERS REPRESENTING THE DURATION OF A LIGHT ENERGIZING PERIOD OF SAID CYCLE; AND COUNTING MEANS FOR COUNTING A NUMBER OF SAID CLOCK PULSES CORRESPONDING TO THE NUMBER STORED IN EACH ONE OF SAID REGISTERS AND FOR PROVIDING A CONTROL SIGNAL TO ADVANCE SAID TRAFFIC LIGHT DISPLAY AT THE COMPLETION OF EACH CLOCK PULSE COUNT CORRESPONDING TO SAID NUMBERS STORED IN SAID REGISTERS.
Claim 2
Dependent Claim
118 words
IN A TRAFFIC LIGHT CONTROL SYSTEM, CONTROLLER MEANS AND STEPPING SWITCH MEANS, SAID CONTROLLER MEANS ACTUATING SAID SWITCH MEANS FOR ADVANCING A TRAFFIC LIGHT DISPLAY THROUGH A CYCLE INCLUDING A PLURALITY OF LIGHT ENERGIZING PERIODS IN RESPONSE TO A SERIES OF CLOCK PULSES, SAID CONTROLLER MEANS COMPRISING: A PLURALITY OF REGISTERS, EACH ONE CAPABLE OF STORING NUMBERS REPRESENTING THE DURATION OF A LIGHT ENERGIZING PERIOD OF SAID CYCLE; AND COUNTING MEANS FOR COUNTING A NUMBER OF SAID CLOCK PULSES CORRESPONDING TO THE NUMBER STORED IN EACH ONE OF SAID REGISTERS AND FOR PROVIDING A CONTROL SIGNAL TO ADVANCE SAID TRAFFIC LIGHT DISPLAY AT THE COMPLETION OF EACH CLOCK PULSE COUNT CORRESPONDING TO SAID NUMBERS STORED IN SAID REGISTERS.
References Cited (Backward Citations)
US3090032A
Cited
US3072883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |