Spring assembly for a tumbling board

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267 60, A63B 518

Patent

active

043601979

ABSTRACT:
A spring assembly for supporting a tumbling board including a helical spring and a mounting cap formed of a one piece homogeneous resilient material receiving one end of the spring. The mounting cap has a flat base for abutment with the underside of a tumbling board and a generally cylindrical projection extending from one side of the base into the interior of the spring end. An annular lip extends from the base and is spaced radially outwardly of the projection to define therewith a groove for receipt of the spring end. The groove narrows as the base is approached such that insertion of the spring into the groove will cause the lip and/or the projection to deform so that the resilience of the material of which the cap is formed will wedgingly cause the cap to tightly grasp the spring end. An aperture is provided in the base for receipt of a fastener by which the cap may be secured to a tumbling board and a protective cover is received on the other end of the spring.

REFERENCES:
patent: 1509750 (1924-09-01), Campbell
patent: 2408617 (1946-10-01), Ferrar
patent: 2742957 (1956-04-01), Young
patent: 2852258 (1958-09-01), Dunklee et al.
patent: 2996295 (1961-08-01), Smith
patent: 3169757 (1965-02-01), Roder et al.
patent: 3427019 (1969-02-01), Brown

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