US3211853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm mounted float operated switch for insertion into gasoline tanks
Assignee: Individual
•
Filing: 1960-05-20
•
Granted: 1965-10-12
•
Expires: 1980-05-20
Abstract
No abstract record available.
Inventors
- 👤 Corvoisier Paul Francis Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:55
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/40; G01F23/44; G01F23/56; H; H01; H01H; H01H35/00; H01H35/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A FLOAT SWITCH COMPRISING AN ELECTRICALLY INSULATIVE PLUG-SHAPED BODY PORTION, SAID BODY PORTION BEING ADAPTED FOR CLOSURE OF A GASOLINE TANK HAVING A FILLING PORT PORTION BY INSERTION OF SAID BODY PORTION IN SAID PORT PORTION; AN ELECTRICALLY CONDUCTIVE CUP MEMBER SECURED TO THE LOWER END OF SAID BODY PORTION, A YIELDING, ELECTRICALY INSULATIVE FLEXIBLE DIAPHRAGM SECURED IN A FLUIDTIGHT MANNER BETWEEN SAID BODY PORTION AND SAID CUP MEMBER; MEANS DEFINING A FLUIDTIGHT CHAMBER WITHIN SAID BODY; PORTION, SAID CHAMBER BEING CLOSED BY SAID DIAPHRAGM; A STATIONARY CONTACT MEMBER LOCATED WITHIN SAID CHAMBER; MOVABLE CONTACT MEANS EXTENDING THROUGH SAID DIAPHGRAM IN A FLUIDTIGHT MANNER FOR ENGAGEMENT WITH SAID STATIONARY CONTACT MEMBER; A CONNECTING ROD HAVING ONE END CONNECTED TO SAID MOVABLE CONTCT MEANS, SAID CONNECTING ROD EXTENDING FREELY SLIDABLY THROUGH SAID CUP MEMBER; A FLOAT CONNECTED TO THE OTHER END OF SAID CONNECTING ROD, SAID FLOAT BEING DIMENSIONED FOR FREE PASSAGE THROUGH SAID FILLING PORT; ELECTRICALLY CONDUCTIVE SPARING MEANS WITHIN SAID CUP MEMBER YIELDINGLY URGING SAID MOVABLE CONTACT MEANS OUT OF ENGAGMENT WITH SAID STATIONARY CONTACT MEMBER, SAID CUP MEMBER MAINTAINING SAID CONNECTING
Claim 2
Dependent Claim
183 words
A FLOAT SWITCH COMPRISING AN ELECTRICALLY INSULATIVE PLUG-SHAPED BODY PORTION, SAID BODY PORTION BEING ADAPTED FOR CLOSURE OF A GASOLINE TANK HAVING A FILLING PORT PORTION BY INSERTION OF SAID BODY PORTION IN SAID PORT PORTION; AN ELECTRICALLY CONDUCTIVE CUP MEMBER SECURED TO THE LOWER END OF SAID BODY PORTION, A YIELDING, ELECTRICALY INSULATIVE FLEXIBLE DIAPHRAGM SECURED IN A FLUIDTIGHT MANNER BETWEEN SAID BODY PORTION AND SAID CUP MEMBER; MEANS DEFINING A FLUIDTIGHT CHAMBER WITHIN SAID BODY; PORTION, SAID CHAMBER BEING CLOSED BY SAID DIAPHRAGM; A STATIONARY CONTACT MEMBER LOCATED WITHIN SAID CHAMBER; MOVABLE CONTACT MEANS EXTENDING THROUGH SAID DIAPHGRAM IN A FLUIDTIGHT MANNER FOR ENGAGEMENT WITH SAID STATIONARY CONTACT MEMBER; A CONNECTING ROD HAVING ONE END CONNECTED TO SAID MOVABLE CONTCT MEANS, SAID CONNECTING ROD EXTENDING FREELY SLIDABLY THROUGH SAID CUP MEMBER; A FLOAT CONNECTED TO THE OTHER END OF SAID CONNECTING ROD, SAID FLOAT BEING DIMENSIONED FOR FREE PASSAGE THROUGH SAID FILLING PORT; ELECTRICALLY CONDUCTIVE SPARING MEANS WITHIN SAID CUP MEMBER YIELDINGLY URGING SAID MOVABLE CONTACT MEANS OUT OF ENGAGMENT WITH SAID STATIONARY CONTACT MEMBER, SAID CUP MEMBER MAINTAINING SAID CONNECTING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |