1982-05-28
1984-07-17
Apley, Richard J.
Undertaking
267158, A63B 508
Patent
active
044601700
ABSTRACT:
A vaulting board is fastened at one end to a frame and slopes up under the action of two spaced apart, concave upwards, leaf springs carrying rollers on each end which contact the under side of the board. The spring centers are clamped in assemblies carrying transverse shafts at the bottom and the curved ends of J-bolts fit around the shafts and are connected to the frame, so that the springs pivot about the shafts axes under vaulting impact to equalize the stresses impressed in the board by the spring ends.
REFERENCES:
patent: 2025263 (1935-12-01), Arner
patent: 2112315 (1938-03-01), Townsend
patent: 3079139 (1963-02-01), Greene et al.
patent: 3490758 (1970-01-01), Foster
patent: 3968964 (1976-07-01), Grosser et al.
Lundberg Duane R.
Thomas, Jr. Joseph S.
AMF Inc.
Apley Richard J.
Crow S. R.
Dougherty David E.
Pfluger, Jr. Walter R.
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