Playground support using compressible elastomer element

Claim 1

A resilient playground equipment support for providing an oscillating movement about a substantially horizontal axis characterized by its quietness, safety, pleasing character of movement and durability comprising, in combination, a fixed support member comprising a pair of spaced elements each including a horizontally disposed portion and a vertically disposed portion, an occupant seat attachment member including a column having an upper end and a lower end, seat attachment means defined at said column upper end, an annular hub defined at said column lower end having an axis, open ends, andd a polygonal inner surface defined by a plurality of first surfaces, adjacent first surfaces being angularly disposed to each other, said hub being disposed between said elements'' vertically disposed portions and said vertically disposed portions being located adjacent said hub ends and shielding said ends from exterior access, a shaft affixed to and extending between said vertically disposed portions of said support member spaced elements coaxially extending through said hub, said shaft having an outer polygonal surface defined by a plurality of second surfaces, adjacent second surfaces being angularly disposed to each other, a plurality of elastomer elements interposed between said first and second surfaces compressed between said first and second surfaces permitting relative oscillation between said hub and shaft about an axis substantially coincident with said hub axis whereby said seat attachment member is resiliently mounted upon said support member by said elastomer elements, said elastomer elements being shielded by said elements'' vertically disposed portions.