Two-stage ORVR control valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 16, 2000
Issued Date -
N/A
app pub date -
Aug 25, 1998
filing date -
Aug 24, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A refueling fuel level responsive control valve with a two-stage closing operation providing an initial soft shutoff cue to the filler nozzle operator, and a subsequent final shutoff after a limited amount of 'roundoff' filling to a maximum fuel level. The control valve includes two float-operated valve elements which close serially in response to initial shutoff and final shutoff refueling fuel levels. The initial shutoff partially closes the control valve to create a temporary shutoff-inducing increase in fuel tank pressure. Final shutoff occurs after allowing a few round-off 'clicks' of the filler nozzle to fully close venting through the control valve.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| US | A | US5590697 | Aug 24, 1994 |
| CA | C | CA2198008 | Aug 08, 1995 |
| EP | B1 | EP0777833 | Aug 08, 1995 |
| EP | B1 | EP0845624 | Aug 08, 1995 |
| WO | A1 | WO1996006294 | Aug 08, 1995 |
| JP | B2 | JP3150702 | Aug 08, 1995 |
| US | A | US5797434 | Sep 13, 1996 |
| US | A | US5755252 | Sep 13, 1996 |
| US | A | US5860458 | Dec 18, 1996 |
| US | A | US5983958 | Aug 21, 1997 |
| US | B1 | US6206057 | May 16, 2000 |
International Classification(s)
- 1998 Application Filing Year
- F16K Class
- 815 Applications Filed
- 374 Patents Issued To-Date
- 45.89 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 34 Citation Count
- F16K Class
- 94.08 % this patent is cited more than
- 25 Age