Patent ID: 6910826

Claim:
A breakaway coupling for coupling a pole structure to a supporting foundation, the foundation including a plurality of horizontally spaced-apart, vertically disposed bolt members having externally threaded upper ends, the pole structure including a base portion having a plurality of openings formed therein corresponding to the bolt member of the foundation, comprising: a coupling nut threadably mounted on each of said bolt members; each of said coupling nuts having an upper end, a lower end, an internally threaded bore extending between said upper and lower ends, and an outer surface; each of said externally threaded upper ends of said bolt members threadably receiving said lower end of said internally threaded bore of the associated coupling nut; the base portion of the pole structure being positioned on said upper ends of said coupling nuts so that the upper ends of the internally threaded bores thereof are aligned with the openings formed in the base portion; threaded bolt members extending downwardly through the openings in the base portion which are threadably received by the upper ends of the internally threaded bores in said coupling nuts; each of said coupling nuts having a plurality of radially spaced-apart, vertically disposed grooves extending partially into said coupling nuts towards said internally threaded bore; and a reinforcing body member extending around each of said coupling nuts.