Patent US3290490A successfully refreshed from Google Patents.
US3290490A
Expired / Lapsed
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Method and apparatus for obtaining traffic flow velocity data
Assignee: SPX Technologies Inc
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Filing: 1966-02-21
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Granted: 1966-12-06
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Expires: 1986-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Auer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:48
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/0104
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
APPARATUS FOR MEASURING VEHICULAR FLOW VELOCITY COMPRISING IN COMBINATION, MEANS RESPONSIVE TO THE PRESENCE OF EACH PASSING VEHICLE WITHIN A DEFINED DETECTION ZONE ALONG A HIGHWAY FOR DEMARCATING THE OCCUPANCY TIME OF SAID VEHICLE IN SAID DETECTION ZONE, STORAGE MEANS FOR STORING A PARAMETER WHOSE MAGNITUDE IS REPRESENTATIVE OF FLOW VELOCITY, MEANS RESPONSIVE TO EACH VEHICLE FOR ALGEBRAICALLY ADDING TO THE THEN-EXISTING VALUE OF THE FLOW VELOCITY PARAMETER STORED IN SAID STORAGE MEANS IN ACCORDANCE WITH THE DIFFERENCE BETWEEN SAID THEN-EXISTING VALUE OF SAID FLOW VELOCITY AND AN INDIRECTLY MEASURED VELOCITY VALUE FOR SAID PASSING VEHICLE, AND MEANS RESPONSIVE TO SAID OCCUPANCY TIME DEMARCATED BY SAID PRESENCE RESPONSIVE MEANS FOR PROVIDING FOR EACH PASSING VEHICLE SAID INDIRECTLY MEASURED VELOCITY VALUE.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |