초록 ▼

An overflow prevention system and method for storage tanks includes a flow disturber situated in the tank fill tube, a fluid level sensor for sensing fluid level in the tank, and an actuator that causes the flow disturber to move toward the fill tube inlet in response to rising fluid level sensed by

An overflow prevention system and method for storage tanks includes a flow disturber situated in the tank fill tube, a fluid level sensor for sensing fluid level in the tank, and an actuator that causes the flow disturber to move toward the fill tube inlet in response to rising fluid level sensed by the fluid level sensor. The flow disturber is arranged to travel between a first position in which it does not cause turbulent flow in the fill tube and a second position in which it causes turbulent flow. The actuator is responsive to the fluid level sensor to move the flow disturber to the second position when a predetermined fluid level is reached. The transition to turbulent flow triggers the automatic shut-off feature of the dispensing nozzle to prevent the tank from being filled beyond the predetermined level.

대표청구항 ▼

An overflow prevention system and method for storage tanks includes a flow disturber situated in the tank fill tube, a fluid level sensor for sensing fluid level in the tank, and an actuator that causes the flow disturber to move toward the fill tube inlet in response to rising fluid level sensed by

An overflow prevention system and method for storage tanks includes a flow disturber situated in the tank fill tube, a fluid level sensor for sensing fluid level in the tank, and an actuator that causes the flow disturber to move toward the fill tube inlet in response to rising fluid level sensed by the fluid level sensor. The flow disturber is arranged to travel between a first position in which it does not cause turbulent flow in the fill tube and a second position in which it causes turbulent flow. The actuator is responsive to the fluid level sensor to move the flow disturber to the second position when a predetermined fluid level is reached. The transition to turbulent flow triggers the automatic shut-off feature of the dispensing nozzle to prevent the tank from being filled beyond the predetermined level. said corner zone is a curved surface.10. The grommet of claim 2 having a center opening that extends through said base and said neck to facilitate stretching said neck during said charging state of said grommet and to permit the insertion of a pin to effect said stretching.11. The grommet of claim 2 wherein: said first, second and third engagements are continuous with one another.12. The grommet of claim 2 wherein: said base has multiple through openings, each of said through openings being in communication with said neck when the grommet is in said charging state.13. The grommet of claim 2 wherein: said corner zone is a curved surface.14. The grommet of claim 1 having a center opening that extends through said base and said neck to facilitate stretching said neck during said charging state of said grommet and to permit the insertion of a pin to effect said stretching.15. The grommet of claim 14 wherein: said base has multiple through openings, each of said through openings being in communication with said neck when the grommet is in said charging state.16. The grommet of claim 1 wherein: said base has multiple through openings, each of said through openings being in communication with said neck when the grommet is in said charging state.17. The method of charging a pressurized dispensing container with propellant comprising the steps of: inserting a grommet having a sealing crown, a base with charging holes and a sealing neck connecting said crown and base into a charging opening in the container, said neck having a larger cross-sectional area than said charging opening, extending said neck to lift said sealing crown from its sealing state and to reduce the diameter of said neck to less than that of the container opening, charging the container through said charging holes of said grommet base while said neck is extended, terminating said step of extending said grommet.