US3759423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contamination-preventing nozzle
Assignee: Sunoco Inc
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Filing: 1971-05-18
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Granted: 1973-09-18
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Expires: 1991-05-18
Abstract
Abstract In a dispensing nozzle used for dispensing solely one or the other of two liquid fuel components, and also for dispensing various blends of the two components, contamination of one component by the other, when dispensing solely said one component, is prevented by utilizing a manually-controllable shut-off valve for the other component, in the nozzle body. A detachable nozzle reducing extension, which must be used in order to dispense solely said one component into specially-equipped automobiles requiring this fuel, is held captive on the nozzle body, and cannot be removed for application to the nozzle spout unless the shut-off valve is first operated to its off position. Two separate fuel inlet passageways leading to the nozzle main shut-off valve are employed, one for each respective one of the two fuel components, and a separate spring-loaded check valve is utilized in each passageway, in close juxtaposition to the main nozzle valve.
Inventors
- 👤 W Hansel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:42
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/423
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
177 words
A nozzle adapted to dispense through one end thereof selected blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a separate check valve sealed into each of said passageways, adjacent the inner end of the respective passageway and in close juxtaposition to said main shut-off valve, each of said check valves controlling the entire liquid flow through its respective passageway and each being arranged to permit liquid flow only toward said one side of said main shut-off valve, a manually-controllable shut-off valve in one of said passageways, ahead of the check valve therein, and a tubular nozzle extension adapted to be coupled to the dispensing end of said nozzle, said extension being constructed and arranged to serve also as a handle for operating said manually-operated shut-off valve.
Claim 2
Dependent Claim
177 words
A nozzle adapted to dispense through one end thereof selected blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a separate check valve sealed into each of said passageways, adjacent the inner end of the respective passageway and in close juxtaposition to said main shut-off valve, each of said check valves controlling the entire liquid flow through its respective passageway and each being arranged to permit liquid flow only toward said one side of said main shut-off valve, a manually-controllable shut-off valve in one of said passageways, ahead of the check valve therein, and a tubular nozzle extension adapted to be coupled to the dispensing end of said nozzle, said extension being constructed and arranged to serve also as a handle for operating said manually-operated shut-off valve.
Claim 3
Dependent Claim
167 words
A nozzle adapted to dispense selected blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a separate check valve sealed into each of said passageways, adjacent the inner end of the respective passageway and in close juxtaposition to said main shut-off valve, each of said check valves controlling the entire liquid flow through its respective passageway and each being arranged to permit liquid flow only toward said one side of said main shut-off valve, a manually-controllable shut-off valve in one of said passageways, ahead of the check valve therein, and a manually, operable nozzle extension associated with said body for effecting control of said manually-controllable shut-off valve, said extension being removably coupled to said manually-controllable shut-off valve.
Claim 4
Dependent Claim
167 words
A nozzle adapted to dispense selected blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a separate check valve sealed into each of said passageways, adjacent the inner end of the respective passageway and in close juxtaposition to said main shut-off valve, each of said check valves controlling the entire liquid flow through its respective passageway and each being arranged to permit liquid flow only toward said one side of said main shut-off valve, a manually-controllable shut-off valve in one of said passageways, ahead of the check valve therein, and a manually, operable nozzle extension associated with said body for effecting control of said manually-controllable shut-off valve, said extension being removably coupled to said manually-controllable shut-off valve.
Claim 5
Dependent Claim
34 words
Nozzle of claim 2, including also locking means for preventing uncoupling of said extension from said manually-controllable shut-off valve unless said last-mentioned valve has first been operated by said extension to its off position.
Claim 6
Dependent Claim
122 words
A nozzle adapted to dispense through one end thereof selectEd blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a manually-controllable shut-off valve in one of said passageways, and a tubular nozzle extension adapted to be removably coupled to the dispensing end of said nozzle, said extension being constructed and arranged to serve when not coupled to the dispensing end of the nozzle as a handle for operating said manually-controllable shut-off valve.
Claim 7
Dependent Claim
122 words
A nozzle adapted to dispense through one end thereof selectEd blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a manually-controllable shut-off valve in one of said passageways, and a tubular nozzle extension adapted to be removably coupled to the dispensing end of said nozzle, said extension being constructed and arranged to serve when not coupled to the dispensing end of the nozzle as a handle for operating said manually-controllable shut-off valve.
Claim 8
Dependent Claim
150 words
A nozzle adapted to dispense through one end thereof selected blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a manually-controllable shut-off valve in one of said passageways, a manually operable nozzle extension for effecting control of said manually-controllable shut-off valve, said extension being removably coupled to said manually-controllable shut-off valve and being adapted, when uncoupled from said manually-controllable shut-off valve, to be coupled to the dispensing end of said nozzle, and locking means for preventing uncoupling of said extension from said manually-controllable shut-off valve unless said last-mentioned valve has first been operated by said extension to its off position.
Claim 9
Dependent Claim
150 words
A nozzle adapted to dispense through one end thereof selected blends of two liquids or either liquid alone, comprising a body, a manually-operable main shut-off valve mounted in said body, a first inlet passageway in said body leading at its inner end to one side of said valve, means providing in said body a second inlet passageway leading at its inner end to said one side of said valve, a manually-controllable shut-off valve in one of said passageways, a manually operable nozzle extension for effecting control of said manually-controllable shut-off valve, said extension being removably coupled to said manually-controllable shut-off valve and being adapted, when uncoupled from said manually-controllable shut-off valve, to be coupled to the dispensing end of said nozzle, and locking means for preventing uncoupling of said extension from said manually-controllable shut-off valve unless said last-mentioned valve has first been operated by said extension to its off position.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |