Vapor-recovery-activated auto-shutoff nozzle, mechanism and system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65B-031/00
B65B-001/30
B65B-003/28
B65B-057/06
B65B-057/14
출원번호
US-0943568
(2007-11-20)
등록번호
US-8550129
(2013-10-08)
발명자
/ 주소
Bonner, Mark
출원인 / 주소
Fuel Transfer Technologies Inc.
대리인 / 주소
Norton Rose Fulbright Canada LLP
인용정보
피인용 횟수 :
2인용 특허 :
10
초록▼
A vapor-recovery-activated auto-shutoff nozzle comprises a manually operable trigger that permits selective operation of a normally closed valve between a valve-closed configuration and a valve-open configuration. Linkage arms connect the trigger and the valve, and are re-configurable between an ena
A vapor-recovery-activated auto-shutoff nozzle comprises a manually operable trigger that permits selective operation of a normally closed valve between a valve-closed configuration and a valve-open configuration. Linkage arms connect the trigger and the valve, and are re-configurable between an enabled configuration and a disabled configuration. In the enabled configuration, the trigger and the valve are operatively connected such that the rest position of the trigger corresponds to the valve being closed, and the in-use position of the manually operable trigger corresponds to the valve being open. In the disabled configuration, the manually operable trigger is precluded from controlling the valve. A deactivation mechanism is for re-configuring the linkage means from the enabled configuration to the disabled configuration, in response to a condition of the fluid in a vapor recovery conduit of the nozzle, thereby precluding the valve from being controlled until the linkage arms are reset to the enabled configuration.
대표청구항▼
1. A vapor-recovery-activated auto-shutoff dispenser for delivering liquid from a liquid source external to the dispenser to a liquid destination external to the dispenser, said vapor-recovery-activated auto-shutoff dispenser comprising: a liquid delivery conduit having a liquid-receiving inlet and
1. A vapor-recovery-activated auto-shutoff dispenser for delivering liquid from a liquid source external to the dispenser to a liquid destination external to the dispenser, said vapor-recovery-activated auto-shutoff dispenser comprising: a liquid delivery conduit having a liquid-receiving inlet and a liquid-dispensing outlet;a vapor recovery conduit for recovering vapor from the liquid destination to the liquid source, the vapor recovery conduit having a vapor-receiving inlet and a vapor-conveying outlet;an openable and closable valve selectively movable between a valve-closed configuration whereat liquid is precluded from being dispensed from said liquid-dispensing outlet of said liquid delivery conduit and a valve-open configuration whereat liquid is permitted to be dispensed from said liquid-dispensing outlet of said liquid delivery conduit;a biasing member for biasing said valve to said valve-closed configuration;an actuator movable between a rest position and at least one in-use position, for permitting selective operation of said valve between said valve-closed configuration and said valve-open configuration;at least one linkage member operatively connecting said actuator and said valve;wherein said at least one linkage is re-configurable between: an enabled configuration whereat said valve is controllable via said actuator, such that said rest position of said actuator corresponds to said valve-closed configuration of said valve and said in-use position of said actuator corresponds to said valve-open configuration of said valve, anda disabled configuration whereat said actuator is precluded from controlling said valve, and said valve is therefore biased to said valve-closed configuration; and,a deactivation mechanism for re-configuring said at least one linkage member from said enabled configuration to said disabled configuration, in response to a condition of the fluid in said vapor recovery conduit, thereby precluding said openable and closable valve from being controlled by said actuator to its valve-open configuration, until said at least one linkage member is reset to its enabled configuration. 2. The vapor-recovery-activated auto-shutoff dispenser of claim 1, wherein said deactivation mechanism comprises a pressure sensor responsive to the condition of fluid pressure in said vapor recovery conduit. 3. The vapor-recovery-activated auto-shutoff dispenser of claim 2, wherein said pressure sensor is in fluid communication with said vapor recovery conduit. 4. The vapor-recovery-activated auto-shutoff dispenser of claim 3, wherein said deactivation mechanism comprises a fluid communication conduit connecting said pressure sensor and said vapor recovery conduit in fluid communication one with the other. 5. The vapor-recovery-activated auto-shutoff dispenser of claim 2, wherein said pressure sensor comprises a movable pressure-actuated member that is movable between an enabling position corresponding to the enabled configuration of said deactivation mechanism and a disabling position corresponding to the disabled configuration of said deactivation mechanism. 6. The vapor-recovery-activated auto-shutoff dispenser of claim 5, wherein said movable pressure-actuated member of said pressure sensor is responsive to a decrease in pressure in order to move from said enabling position to said disabling position. 7. The vapor-recovery-activated auto-shutoff dispenser of claim 5, further comprising means for biasing said movable pressure-actuated member to said enabling position. 8. The vapor-recovery-activated auto-shutoff dispenser of claim 5, wherein said movable pressure-actuated member comprises a piston movable within a co-operating cylinder between said enabling position and said disabling position. 9. The vapor-recovery-activated auto-shutoff dispenser of claim 5, wherein said at least one linkage member comprises a first linkage arm and a second linkage arm connected together one to the other in angularly variable relation at a linkage elbow. 10. The vapor-recovery-activated auto-shutoff dispenser of claim 9, wherein said first linkage arm and said second linkage arm are pivotally connected one to the other at said linkage elbow. 11. The vapor-recovery-activated auto-shutoff dispenser of claim 9, wherein said movable pressure-actuated member of said pressure sensor is connected via a shaft member to said at least one linkage member. 12. The vapor-recovery-activated auto-shutoff dispenser of claim 9, wherein said actuator comprises a handle. 13. The vapor-recovery-activated auto-shutoff dispenser of claim 12, wherein said first linkage arm of said at least one linkage member is connected in angularly variable relation to said handle. 14. The vapor-recovery-activated auto-shutoff dispenser of claim 9, wherein said second linkage arm of said at least one linkage member is connected to said valve. 15. A vapor-recovery-activated auto-shutoff mechanism for use in a dispenser, said dispenser for delivering liquid from a liquid source external to the dispenser to a liquid destination external to the dispenser and including a liquid delivery conduit and a vapor recovery conduit, the vapor recovery conduit being configured to recover vapor from the liquid destination to the liquid source, said vapor-recovery-activated auto-shutoff mechanism comprising: at least one linkage member for operatively connecting an actuator and a valve, and re-configurable between: an enabled configuration whereat said valve is controllable via said actuator, anda disabled configuration whereat said actuator is precluded from controlling said valve, and said valve is in a closed configuration; and,a deactivation mechanism for re-configuring said at least one linkage member from said enabled configuration to said disabled configuration, in response to a condition of the fluid in said vapor recovery conduit, thereby precluding said openable and closable valve from being controlled by said actuator to a valve-open configuration, until said at least one linkage member is reset to its enabled configuration. 16. The vapor-recovery-activated auto-shutoff mechanism of claim 15, wherein said deactivation mechanism comprises a pressure sensor responsive to the condition of fluid pressure in said vapor recovery conduit. 17. A vapor-recovery-activated auto-shutoff fluid exchange system for pumping liquid from a source container and concurrently pumping vapor from a destination container, said vapor-recovery-activated auto-shutoff fluid exchange system comprising: the source container for retaining liquid and vapor therein;a pump for pumping liquid from said source container and for pumping vapor into said source container, the pump having a liquid inlet, a liquid outlet, a vapor inlet and a vapor outlet;wherein said liquid inlet and said vapor outlet of said pump are in fluid communication with said source container;a dispenser having a liquid delivery conduit having a liquid-receiving inlet and a liquid-dispensing outlet and vapor recovery conduit having a vapor-receiving inlet and a vapor-conveying outlet, the vapor recovery conduit being configured to convey vapor from the destination container to the source container, the destination container and the source container being external to the dispenser;a liquid delivery member for delivering liquid from said liquid outlet of said pump to said liquid-receiving inlet of said dispenser;a vapor delivery member for delivering vapor from said vapor-conveying outlet of said dispenser to said vapor inlet of said pump;a selectively controllable actuation mechanism for actuating said pump;an openable and closable valve selectively movable between a valve-closed configuration whereat liquid is precluded from being dispensed from said liquid-dispensing outlet of said liquid delivery conduit and a valve-open configuration whereat liquid is permitted to be dispensed from said liquid-dispensing outlet of said liquid delivery conduit;a biasing member for biasing said valve to said valve-closed configuration;an actuator movable between a rest position and at least one in-use position, for permitting selective operation of said valve between said valve-closed configuration and said valve-open configuration;at least one linkage member operatively connecting said actuator and said valve;wherein said at least one linkage member is re-configurable between an enabled configuration whereat said valve is controllable via said actuator, such that said rest position of said actuator corresponds to said valve-closed configuration of said valve and said in-use position of said actuator corresponds to said valve-open configuration of said valve, and a disabled configuration whereat said actuator is precluded from controlling said valve, and said valve is therefore biased to said valve-closed configuration; and,a deactivation mechanism for re-configuring said at least one linkage member from said enabled configuration to said disabled configuration, in response to a condition of the fluid in said vapor recovery conduit, thereby precluding said openable and closable valve from being controlled by said actuator to its valve-open configuration, until said at least one linkage member is reset to its enabled configuration. 18. The vapor-recovery-activated auto-shutoff fluid exchange system of claim 17, wherein said deactivation mechanism comprises a pressure sensor responsive to the condition of fluid pressure in said vapor recovery conduit. 19. The vapor-recovery-activated auto-shutoff dispenser of claim 1, wherein the dispenser comprises a single vapor recovery conduit, and the deactivation mechanism is responsive to the condition of the fluid in the single vapor recovery conduit. 20. The vapor-recovery-activated auto-shutoff dispenser of claim 1, wherein the vapor recovery conduit branches into a first passage in fluid communication with the deactivation mechanism and a second passage in fluid communication with the vapor-conveying outlet.
Dotson Kenneth W. (Raleigh NC) Mac Harmon Stewart (Raleigh NC) Weeks Francis B. (Apex NC) Shih Chih-Kun J. (Cary NC) Johnson John L. (Raleigh NC), Fuel dispensing nozzle.
Dotson Kenneth W. (Raleigh NC) Mac Harmon Stewart (Raleigh NC) Weeks Francis B. (Apex NC) Shih Chih-Kun J. (Cary NC) Johnson John L. (Raleigh NC), Fuel dispensing nozzle.
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