US4098308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor recovering fuel dispensing nozzle
Assignee: Standard Oil Co
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Filing: 1976-06-07
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Granted: 1978-07-04
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Expires: 1996-06-07
Abstract
Abstract The present invention is a fuel dispensing nozzle having an expanding rubber annulus that seals on the inside of a tank filler neck. The seal uses fuel pressure to expand and contract, thereby requiring little operator attention to effect vapor recovery during fuel loading.
Inventors
- 👤 Charles R. Purdum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:57
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/54
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A dispensing nozzle for dispensing fuel into a tank filler neck, said dispensing nozzle having a dispensing conduit, an expandable annulus on said conduit for effecting a seal between the conduit and the inside surface of the tank filler neck, said annulus defining with said dispensing conduit a continuously closed chamber for receiving fuel and thereby expanding said annulus, said dispensing conduit defining in the side walls thereof at least one hole communicating with said closed chamber whereby said annulus can be expanded by the flow of fuel through said dispensing conduit only, said annulus located on said conduit so that said annulus can be completely received in said neck when fuel is dispensed.
Claim 2
Dependent Claim
114 words
A dispensing nozzle for dispensing fuel into a tank filler neck, said dispensing nozzle having a dispensing conduit, an expandable annulus on said conduit for effecting a seal between the conduit and the inside surface of the tank filler neck, said annulus defining with said dispensing conduit a continuously closed chamber for receiving fuel and thereby expanding said annulus, said dispensing conduit defining in the side walls thereof at least one hole communicating with said closed chamber whereby said annulus can be expanded by the flow of fuel through said dispensing conduit only, said annulus located on said conduit so that said annulus can be completely received in said neck when fuel is dispensed.
Claim 3
Dependent Claim
21 words
The fuel dispensing nozzle of claim 1 wherein a tube is located inside the nozzle to recover vapors released during fueling.
Claim 4
Dependent Claim
153 words
The fuel dispensing nozzle of claim 1 comprising: (a) a nozzle, said nozzle having a nozzle spout for insertion into a tank filler neck and having means for regulating a flow of fuel from the nozzle into the tank filler neck; (b) a restriction, located inside the nozzle spout, whereby a back pressure is created in the nozzle spout during fuel dispensing; (c) a metal sleeve attached to the outside surface of the nozzle spout, having a rear and a leading protector rib, and having holes communicating to the inside surface of the nozzle spout; (d) an expandable annulus, attached to the metal sleeve of (c) so that said annulus can be completely received in said neck, wherein fuel when being dispensed flows thru the holes of the metal sleeve of (c) into and expanding the rubber annulus, thereby effecting a seal between the nozzle spout and inside of the tank filler neck.
Claim 5
Dependent Claim
22 words
The fuel dispensing nozzle of claim 3 wherein a tube is located inside the nozzle spout to recover vapors released during fueling.
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) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |