Breakaway swivel coupling
This patent describes a fuel dispensing system including a liquid fuel dispensing station for receiving fuel from a remote location and supplying fuel to a supply conduit, a flexible fuel line operatively connected in flow communication to the conduit, and a nozzle including operator actuating means operatively connected to the fuel line, a detachable safety device connected in the fuel line intermediate the nozzle and the conduit for coupling portions of the line together and for uncoupling when an excessive tensile force is exerted externally on the fuel line, the device comprising first and second body members, each of the body members having a fluid passageway extending therethrough, each of the passageways having an inlet and an outlet, coupling means interconnecting the first and second body members together for pivotable movement about a pivot axis relatively to one another with the outlet of a first of the body members in flow communication with the inlet of the second of the body members to permit fuel to flow therethrough when the body members are coupled, locking means for locking the body members together when coupled and for unlocking the members when an external tensile force above a predetermined limit is applied to the fuel line to permit uncoupling of the body member, one of the body members including a coupling pivotably connected in flow communication to one of the inlet of the first body member and outlet of the second body member for rotation about an axis inclined relatively to the pivot axis and valve means in the fluid passageway of each body member for shutting flow communication between the body members when uncoupled.
- Assignee:
- Helix Enterprises, Inc., Knoxville, TN
- Patent Number(s):
- US 4779638
- OSTI ID:
- 6789403
- Resource Relation:
- Patent File Date: Filed date 13 Oct 1987
- Country of Publication:
- United States
- Language:
- English
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