Patent US3170326A successfully refreshed from Google Patents.
US3170326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure fluid level gage
Assignee: Individual
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Filing: 1962-04-24
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Granted: 1965-02-23
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Expires: 1982-04-24
Abstract
No abstract record available.
Inventors
- 👤 Forrest E Knecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:25
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A HIGH-PRESSURE LIQUID LEVEL GAUGE, COMRISING A BODY HAVING A CAVITY OPENING TO THE FRONT THEREOF, FOR RECEIVING THE LIQUID TO BE MEASURED, A PISTON DISPOSED FOR MOVEMENT IN SAID CAVITY, A PRESSURE RESPONSIVE GASKET DISPOSED BETWEEN THE SIDE WALLS DEFINING SAID CAVITY AND SAID PISTON ADAPTED TO PERMIT MOVEMENT OF SAID PISTON AND EFFECTING AN INCREASED SEAL WITH INCREASE OF LIQUID PRESSURE IN SAID BODY, SAID PISTON HAVING A LIQUID INDICATING SLOT IN THE FRONT FACE THEREOF COMMUNICATIVELY CONNECTED TO SAID CAVITY, A TRANSPARENT MEMBER COVERING SAID LIQUID INDICATING SLOT, A GASKET INTERPOSED BETWEEN SAID PISTON AND SAID TRANSPARENT MEMBERS, AND A COVER ENCLOSING THE FRONT OF SAID BODY AND SECURED THERETO HAVING A SLOT THERETHROUGH FOR VIEWING THE LIQUID LEVEL IN SAID INDICATING SLOTSAID TRANSPARENT MEMBERS BEING ADAPTED TO BEAR AGAINST SAID COVER OVER SAID VIEWING SLOT.
Claim 2
Dependent Claim
139 words
A HIGH-PRESSURE LIQUID LEVEL GAUGE, COMRISING A BODY HAVING A CAVITY OPENING TO THE FRONT THEREOF, FOR RECEIVING THE LIQUID TO BE MEASURED, A PISTON DISPOSED FOR MOVEMENT IN SAID CAVITY, A PRESSURE RESPONSIVE GASKET DISPOSED BETWEEN THE SIDE WALLS DEFINING SAID CAVITY AND SAID PISTON ADAPTED TO PERMIT MOVEMENT OF SAID PISTON AND EFFECTING AN INCREASED SEAL WITH INCREASE OF LIQUID PRESSURE IN SAID BODY, SAID PISTON HAVING A LIQUID INDICATING SLOT IN THE FRONT FACE THEREOF COMMUNICATIVELY CONNECTED TO SAID CAVITY, A TRANSPARENT MEMBER COVERING SAID LIQUID INDICATING SLOT, A GASKET INTERPOSED BETWEEN SAID PISTON AND SAID TRANSPARENT MEMBERS, AND A COVER ENCLOSING THE FRONT OF SAID BODY AND SECURED THERETO HAVING A SLOT THERETHROUGH FOR VIEWING THE LIQUID LEVEL IN SAID INDICATING SLOTSAID TRANSPARENT MEMBERS BEING ADAPTED TO BEAR AGAINST SAID COVER OVER SAID VIEWING SLOT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |