US3193798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic density meter
Assignee: Laboratory For Electronics Inc
•
Filing: 1959-05-29
•
Granted: 1965-07-06
•
Expires: 1979-05-29
Abstract
No abstract record available.
Inventors
- 👤 Palmer M Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:19
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/0104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN AN APPARATUS FOR MEASURING THE DENSITY OF MOVING VEHICULAR TRAFFIC PASSING A SAMPLING POINT OVER A WIDE RANGE OF SPEEDS, MEANS RESPONSIVE TO THE PASSAGE OF VEHICLES FOR GENERATING PULSES FROM A CONSTANT VOLTAGE SOURCE OF TIME LENGTH INVERSELY PROPORTIONAL TO THE SPEEDS OF INDIVIDUAL VEHICLES IN TRAFFIC OVER A SUBSTANTIAL RANGE OF SPEEDS AND OF NUMBER SUBSTANTIALLY DIRECTLY PROPORTIONAL TO THE NUMBER OF SUCH VEHICLES IN TRAFFIC PASSING SAID SAMPLING POINT, MEANS INCLUDING A CUMULATIVE STORAGE ELEMENT FOR INTEGRATING THE TOTAL TIME LENGTH OF SAID PULSES,
Claim 2
Dependent Claim
88 words
IN AN APPARATUS FOR MEASURING THE DENSITY OF MOVING VEHICULAR TRAFFIC PASSING A SAMPLING POINT OVER A WIDE RANGE OF SPEEDS, MEANS RESPONSIVE TO THE PASSAGE OF VEHICLES FOR GENERATING PULSES FROM A CONSTANT VOLTAGE SOURCE OF TIME LENGTH INVERSELY PROPORTIONAL TO THE SPEEDS OF INDIVIDUAL VEHICLES IN TRAFFIC OVER A SUBSTANTIAL RANGE OF SPEEDS AND OF NUMBER SUBSTANTIALLY DIRECTLY PROPORTIONAL TO THE NUMBER OF SUCH VEHICLES IN TRAFFIC PASSING SAID SAMPLING POINT, MEANS INCLUDING A CUMULATIVE STORAGE ELEMENT FOR INTEGRATING THE TOTAL TIME LENGTH OF SAID PULSES,
References Cited (Backward Citations)
US1944723A
Cited
US2126431A
Cited
US2447024A
Cited
US2578046A
Cited
GB712421A
Cited
US2925583A
Cited
US2977536A
Cited
US3059232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |