Patent US337342A successfully refreshed from Google Patents.
US3138024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level-responsive indicating and control apparatus
Assignee: Individual
•
Filing: 1962-11-23
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Granted: 1964-06-23
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Harry L Pariser
- 👤 Pariser William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:35
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A LIQUID LEVEL-RESPONSIVE INDICATING AND CONTROL APPARATUS, COMPRISING FLOAT MEANS ADAPTED TO RIDE ON A BODY OF LIQUID, AN INDICATOR ROD CARRIED BY SAID FLOAT MEANS, PROBE MEANS MOUNTED FOR OSCILLATORY RECIPROCAL MOVEMENT LATERALLY OF SAID INDICATOR ROD, ELECTROMECHANICAL MEANS OPERATIVELY CONNECTED WITH SAID PROBE MEANS FOR MOVING THE SAME TOWARD AND AWAY FROM THE PATH OF MOVEMENT OF SAID INDICATOR ROD, SAID PROBE MEANS BEING POSITIONED SO AS TO MAKE CONTACT WITH SAID INDICATOR ROD DURING EACH FORWARD STROKE AS LONG AS THE LEVEL OF THE LIQUID IS ABOVE A PREDETERMINED MINIMUM, AND CONTROL SWITCH MEANS POSITIONED TO BE ACTUATED BY AN ADJUNCT OF SAID PROBE MEANS WHENEVER THE FORWARD STROKE OF THE LATTER IS PERMITTED TO CONTINUE ACROSS SAID PATH OF MOVEMENT OF SAID INDICATOR ROD WITHOUT ANY CONTACT BETWEEN SAID PROBE MEANS AND SAID INDICATOR ROD IN RESPONSE TO THE LEVEL OF THE LIQUID BEING BELOW SAID PREDETERMINED MINIMUM.
Claim 2
Dependent Claim
152 words
A LIQUID LEVEL-RESPONSIVE INDICATING AND CONTROL APPARATUS, COMPRISING FLOAT MEANS ADAPTED TO RIDE ON A BODY OF LIQUID, AN INDICATOR ROD CARRIED BY SAID FLOAT MEANS, PROBE MEANS MOUNTED FOR OSCILLATORY RECIPROCAL MOVEMENT LATERALLY OF SAID INDICATOR ROD, ELECTROMECHANICAL MEANS OPERATIVELY CONNECTED WITH SAID PROBE MEANS FOR MOVING THE SAME TOWARD AND AWAY FROM THE PATH OF MOVEMENT OF SAID INDICATOR ROD, SAID PROBE MEANS BEING POSITIONED SO AS TO MAKE CONTACT WITH SAID INDICATOR ROD DURING EACH FORWARD STROKE AS LONG AS THE LEVEL OF THE LIQUID IS ABOVE A PREDETERMINED MINIMUM, AND CONTROL SWITCH MEANS POSITIONED TO BE ACTUATED BY AN ADJUNCT OF SAID PROBE MEANS WHENEVER THE FORWARD STROKE OF THE LATTER IS PERMITTED TO CONTINUE ACROSS SAID PATH OF MOVEMENT OF SAID INDICATOR ROD WITHOUT ANY CONTACT BETWEEN SAID PROBE MEANS AND SAID INDICATOR ROD IN RESPONSE TO THE LEVEL OF THE LIQUID BEING BELOW SAID PREDETERMINED MINIMUM.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |