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A tie down assembly adapted to be installed within a structure includes a cup and a crossbar that is fastened removably to the cup by a plurality of fasteners. The cup includes a recess forming an interior surface, and a plurality of seats extending from the interior surface. The crossbar includes a

A tie down assembly adapted to be installed within a structure includes a cup and a crossbar that is fastened removably to the cup by a plurality of fasteners. The cup includes a recess forming an interior surface, and a plurality of seats extending from the interior surface. The crossbar includes a central portion and a plurality of elongated members extending therefrom. Each of the members includes a head that engages a corresponding one of the seats of the cup and is secured to the seat by one of the fasteners. The central portion of the crossbar may include a central aperture that receives one of the fasteners for an additional attachment point to the cup. The crossbar is adapted to receive tie down hooks, connectors, and the like. When the crossbar requires repair or replacement, it may be removed from the cup by unfastening the fasteners without the need to remove the cup from the structure.

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1. A tie down assembly, comprising: a cup having a first end, a second end opposite the first end, a recess formed within the first end and defining an interior surface and an inner wall surrounding the interior surface, and a plurality of pockets formed within the interior surface, each of the plur

1. A tie down assembly, comprising: a cup having a first end, a second end opposite the first end, a recess formed within the first end and defining an interior surface and an inner wall surrounding the interior surface, and a plurality of pockets formed within the interior surface, each of the plurality of pockets including a seat and a pair of opposed walls that extend upwardly from the interior surface to the upper end and flank the seat, each of the seats including a bore;and a crossbar having a central portion and a plurality of members extending from the central portion, each of the plurality of members includes a free end having a head and an aperture formed within the head,the crossbar being fastened removably to the cup by a plurality of fasteners such that the crossbar is positioned within the recess of the cup, and each of the heads of the plurality of members of the crossbar engages a corresponding one of the plurality of seats of the cup and is positioned between a corresponding one of the pair of opposed walls, each of the apertures of the heads of the plurality of members of the crossbar aligns with a corresponding one of the bores of the plurality of seats of the cup, and each of the apertures of the heads of the plurality of members of the crossbar and the bores of the plurality of seats of the cup is sized and shaped to receive a corresponding one of the plurality of fasteners. 2. The tie down assembly of claim 1, wherein the cup includes a centrally-located seat extending from the interior surface of the cup and having a bore, and the central portion of the crossbar includes an aperture, the central portion of the crossbar engaging the centrally-located seat of the cup, and the aperture of the central portion of the crossbar aligns with the bore of the centrally-located seat of the cup, the aligned aperture of the central portion of the crossbar and the bore of the centrally-located seat of the cup are sized and shaped to receive one of the plurality of fasteners. 3. The tie down assembly of claim 2, further comprising a plurality of threaded inserts each of which is positioned within a corresponding one of the plurality of bores of the plurality of seats of the cup and the bore of the centrally-located seat of the cup, each of the plurality of threaded inserts threadedly engages a corresponding one of the plurality of fasteners. 4. The tie down assembly of claim 3, further comprising a plurality of gaskets each of which is located between each one of the plurality of seats of the cup and a corresponding one of the heads of the plurality of members of the crossbar and between the central portion of the crossbar and the centrally-located seat of the cup. 5. The tie down assembly of claim 4, wherein each of the heads of the plurality of members of the crossbar includes a groove that is sized and shaped to receive an O-ring. 6. The tie down assembly of claim 2, wherein each of the heads of the plurality of members of the crossbar includes a pair of tabs that engage a corresponding one of the plurality of seats of the cup. 7. The tie down assembly of claim 1, wherein each of the heads of the plurality of members of the crossbar includes a pair of tabs that engage a corresponding one of the plurality of seats of the cup. 8. The tie down assembly of claim 1, wherein the cup includes a centrally-located bore formed within the interior surface of the cup, and the central portion of the crossbar includes a stem having an aperture formed therethrough, the aperture of the stem of the crossbar aligns with the centrally-located bore of the cup, the aligned aperture of the stem of the crossbar and the centrally-located bore of the cup are sized and shaped to receive one of the plurality of fasteners. 9. The tie down assembly of claim 8, wherein each of the heads of the plurality of members of the crossbar includes a pair of tabs that engage a corresponding one of the plurality of seats of the cup. 10. The tie down assembly of claim 1, wherein the plurality of pockets of the cup includes four of the pockets, and the plurality of members of the crossbar includes four of the members. 11. The tie down assembly of claim 10, wherein each of the plurality of members of the crossbar extend substantially in a same plane. 12. The tie down assembly of claim 1, wherein the tie down assembly is adapted to be installed within a structure having a first surface, a second surface opposite the first surface, and a hole extending from the first surface to the second surface, the hole being sized and shaped to receive the cup, and, when the cup is installed within the hole, the upper end of the cup lies substantially flush with the first surface of the structure. 13. The tie down assembly of claim 12, wherein the cup includes a flange extending circumferentially from and proximate to the second end of the cup, the flange engaging the second surface of the structure. 14. The tie-down assembly of claim 1, wherein the cup is made from aluminum and the crossbar is made from steel. 15. The tie down assembly of claim 14, wherein the structure is made from aluminum. 16. The tie down assembly of claim 15, wherein the structure includes a deck of a vessel. 17. A tie down assembly, comprising: a cup having a first end, a second end opposite the first end, a recess formed within the first end and defining an interior surface and an inner wall surrounding the interior surface, a plurality of pockets formed within the interior surface each of the plurality of pockets including a seat and a pair of opposed walls that extend upwardly from the interior surface to the upper end and flank the seat, each of the seats including a bore, and a centrally-located seat extending from the interior surface of the cup and having a bore; and a crossbar having a central portion and a plurality of members extending from the central portion, the central portion including an aperture, and each of the plurality of members including a free end having a head with a groove and an aperture formed within the head, the crossbar being fastened removably to the cup by a plurality of fasteners such that the crossbar is positioned within the recess of the cup and each of the heads of the plurality of members of the crossbar is positioned between a corresponding one of the pair of opposed walls of a corresponding one of the plurality of pockets and engages a corresponding one of the plurality of seats of the cup, and the central portion of the crossbar engages the centrally-located seat of the cup, each of the apertures of the heads of the plurality of members of the crossbar aligns with a corresponding one of the bores of the plurality of seats of the cup, and the aperture of the central portion of the crossbar aligns with the bore of the centrally-located seat of the cup, and each of the apertures of the heads of the plurality of members of the crossbar and the bores of the plurality of seats of the cup are sized and shaped to receive a corresponding one of the plurality of fasteners, and the aperture of the central portion of the crossbar and the bore of the centrally-located seat of the cup are sized and shaped to receive one of the plurality of fasteners. 18. The tie down assembly of claim 17, further comprising: a plurality of threaded inserts each of which is positioned within a corresponding one of the plurality of bores of the plurality of seats of the cup and the bore of the centrally-located seat of the cup, each of the threaded inserts threadedly engages a corresponding one of the plurality of fasteners; a plurality of gaskets, each of which is located between a corresponding one of the plurality of seats of the cup and a corresponding one of the heads of the plurality of members of the crossbar and between the central portion of the crossbar and the centrally-located seat of the cup; and a plurality of O-rings each of which are received by a corresponding one of the grooves of the heads of the crossbar. 19. The tie down assembly of claim 18, wherein the cup is made from aluminum and the crossbar is made from steel.