1975-01-28
1976-07-13
Marbert, James B.
Undertaking
267160, A63B 508
Patent
active
039689646
ABSTRACT:
The vaulting board has leaf springs with rollers at their opposite ends, and the effective length of the leaf springs can be changed by changing the roller spacing.
REFERENCES:
patent: 3062542 (1962-11-01), Evancha
patent: 3408061 (1968-10-01), Meyer
patent: 3814420 (1974-06-01), Encke
Grosser Richard W.
Long Virgil L.
AMF Incorporated
Lewis Walter
Marbert James B.
Price George W.
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