Patent ID: 7156357

Claim:
An apparatus for supporting an umbrella on a deck formed with deck planks having a thickness dimension and defining a top surface of said deck, said deck planks being positioned with a gap between adjacent planks, said umbrella including a mast, comprising: a base member including a pair of opposing flanges oriented for engagement with said top surface of said deck; an upright member projecting upwardly and centrally from said base member for engagement with said umbrella mast; and an anchoring fin affixed to said base member at a central position relative to said base member and extending downwardly therefrom generally perpendicularly to said base member, said anchoring fin being positionable through said gap between adjacent deck planks, said anchoring fin having a depth dimension measured from said base member, said anchoring fin being formed with a notch sized to fit over a transversely extending frame member of said deck positioned below said deck planks.