Patent US3333458A successfully refreshed from Google Patents.
US3333458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile gas detecting unit with distance traveled marking means
Assignee: HEATH SURVEY CONSULTANTS Inc
•
Filing: 1963-12-12
•
Granted: 1967-08-01
•
Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Charles A Heath
- 👤 John F Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:46
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A MOBILE GAS LEAKAGE DETECTING APPARATUS FOR DETECTING AND CHARTING THE LOCATION OF LEAKS OF A PRESELECTED GAS THROUGH THE SURFACE OF THE GROUND COMPRISING: A VEHICLE ADAPTED TO MOVE OVER THE GROUND ALONG A PREDETERMINED SURVEY ROUTE; A GAS SAMPLE PICK-UP APPARATUS OPERATIVELY MOUNTED ON SAID VEHICLE; A SUCTION MEANS FOR DRAWING GAS SAMPLES THROUGH SAID GAS PICK-UP APPARATUS; GAS CONCENTRATION ANALYZER MEANS MOUNTED IN SAID VEHICLE FOR MEASURING THE CONCENTRATION OF SAID PRESELECTED GAS IN THE GAS SAMPLES DRAWN BY SAID SUCTION MEANS; RECORDING MEANS INCLUDING A CHART AND A FIRST AND SECOND STYLUS; SAID RECORDING MEANS BEING RESPONSIVE TO SAID GAS CONCENTRATION ANALYZING MEANS FOR RECORDING THE CONCENTRATIONS OF SAID PRESELECTED GAS ON SAID CHART BY MEANS OF FIRST STYLUS; MEANS FOR MOVING SAID RECORDER CHART AT A CONSTANT SPEED INDEPENDENT OF THE SPEED OF SAID VEHICLE; FIFTH WHEEL MEANS MOUNTED ON SAID VEHICLE TO BE ROTATED AT A SPEED PROPORTIONAL TO THE SPEED OF SAID VEHICLE; A WORM GEAR COUPLED TO SAID FIFTH WHEEL MEANS TO BE DRIVEN
Claim 2
Dependent Claim
172 words
A MOBILE GAS LEAKAGE DETECTING APPARATUS FOR DETECTING AND CHARTING THE LOCATION OF LEAKS OF A PRESELECTED GAS THROUGH THE SURFACE OF THE GROUND COMPRISING: A VEHICLE ADAPTED TO MOVE OVER THE GROUND ALONG A PREDETERMINED SURVEY ROUTE; A GAS SAMPLE PICK-UP APPARATUS OPERATIVELY MOUNTED ON SAID VEHICLE; A SUCTION MEANS FOR DRAWING GAS SAMPLES THROUGH SAID GAS PICK-UP APPARATUS; GAS CONCENTRATION ANALYZER MEANS MOUNTED IN SAID VEHICLE FOR MEASURING THE CONCENTRATION OF SAID PRESELECTED GAS IN THE GAS SAMPLES DRAWN BY SAID SUCTION MEANS; RECORDING MEANS INCLUDING A CHART AND A FIRST AND SECOND STYLUS; SAID RECORDING MEANS BEING RESPONSIVE TO SAID GAS CONCENTRATION ANALYZING MEANS FOR RECORDING THE CONCENTRATIONS OF SAID PRESELECTED GAS ON SAID CHART BY MEANS OF FIRST STYLUS; MEANS FOR MOVING SAID RECORDER CHART AT A CONSTANT SPEED INDEPENDENT OF THE SPEED OF SAID VEHICLE; FIFTH WHEEL MEANS MOUNTED ON SAID VEHICLE TO BE ROTATED AT A SPEED PROPORTIONAL TO THE SPEED OF SAID VEHICLE; A WORM GEAR COUPLED TO SAID FIFTH WHEEL MEANS TO BE DRIVEN
References Cited (Backward Citations)
US778451A
Cited
US1444886A
Cited
US2290618A
Cited
US2879663A
Cited
US2834113A
Cited
US3107517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |