Patent US3845792A successfully refreshed from Google Patents.
US3845792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel-dispensing nozzle seal
Assignee: Texaco Inc
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Filing: 1972-10-24
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Granted: 1974-11-05
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Expires: 1992-10-24
Abstract
Abstract A dispensing nozzle for transferring a volatile liquid such as a gasoline, from a pressurized source thereof to a receptacle such as a vehicle fuel tank having a filler spout. The dispensing nozzle includes a discharge tube which removably registers in said filler spout. An expandable, liquid inflatable member is carried on said discharge tube to be expanded when properly registered within said spout. The said member thereby forms a peripheral seal within the annular passage defined by adjacent walls of said inlet spout and said tube respectively, whereby to avoid escape of vapors to the atmosphere as liquid is forced into the vehicle tank.
Inventors
- 👤 E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:10
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/54
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
172 words
A dispensing nozzle for transferring a volatile liquid from a pressurized source thereof, to a tank having a filling spout, said nozzle including a discharge tube defining an internal flow passage having an outlet at one end thereof, said tube being adapted to be removably registered within said filling spout, and manually operable valve means actuable to regulate liquid flow between the pressurized liquid source and said tank, the improvement therein of; a resilient walled inflatable member carried on the outer surface of said nozzle discharge tube to be radially expanded into engagement with contiguous wall of said filling spout to form a substantially fluid-tight annular seal therewith, a transfer conduit communicating said inflatable member with said nozzle discharge tube at a junction point, for directing a stream of said volatile liquid into said inflatable member when said valve means is actuated to the open position, whereby to initiate liquid flow through said discharge tube, and means communicating with said tank to receive vapors from the latter when liquid is urged thereinto.
Claim 2
Dependent Claim
172 words
A dispensing nozzle for transferring a volatile liquid from a pressurized source thereof, to a tank having a filling spout, said nozzle including a discharge tube defining an internal flow passage having an outlet at one end thereof, said tube being adapted to be removably registered within said filling spout, and manually operable valve means actuable to regulate liquid flow between the pressurized liquid source and said tank, the improvement therein of; a resilient walled inflatable member carried on the outer surface of said nozzle discharge tube to be radially expanded into engagement with contiguous wall of said filling spout to form a substantially fluid-tight annular seal therewith, a transfer conduit communicating said inflatable member with said nozzle discharge tube at a junction point, for directing a stream of said volatile liquid into said inflatable member when said valve means is actuated to the open position, whereby to initiate liquid flow through said discharge tube, and means communicating with said tank to receive vapors from the latter when liquid is urged thereinto.
Claim 3
Dependent Claim
43 words
The improvement as defined in claim 1, including; liquid flow blocking means disposed in said discharge tube flow passage at a point downstream of said junction point to impede liquid flow therethrough and to establish a pressure differential across said flow blocking means.
Claim 4
Dependent Claim
25 words
The improvement as defined in claim 1, including; a flow restricting opening disposed in said flow passage at a point downstream at said junction point.
Claim 5
Dependent Claim
22 words
The improvement as defined in claim 3, wherein said flow restricting includes an orifice formed transversely of said flow passage discharge tube.
Claim 6
Dependent Claim
53 words
The improvement as defined in claim 1, wherein said inflatable member includes; a torus shaped element having inner and outer resilient walls, said inner wall being contractable to form a tight fit about the discharge tube outer surface, and said outer wall being expandable to engage a contiguous wall of said filling spout.
Claim 7
Dependent Claim
32 words
The improvement as defined in claim 5, wherein said torus shaped member is slidable along the surface of said discharge tube to be readily removable from the latter when in deflated condition.
References Cited (Backward Citations)
US1599497A
Cited
US2908299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |