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US 6,582,345 B2Granted
Weight holder device for weight lifting apparatus
OwnerNormand Royinventor
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OwnerNormand Royinventor
Estimating the term…
A weight holder device for use in combination with a weight lifting exercise apparatus that includes a stack of several plates of equal size and weight and each having a vertical central through hole to receive a vertical lifting rod with a horizontal through bore and a horizontal hole extending from the central hole to a side of the plate. The device includes a shear pin removably inserted through both the horizontal hole and the through bore and supporting a variable number of upper plates of the stack. A protruding end of the pin has an axially adjustable holder mounted thereon for releasably and tightly suspending a fractional weight therefrom, between two spaced flanges secured to and radially extending from the pin. At least one of the flanges has a locking member and is axially adjustable relative to the other flange and along the pin to releasably engage and tightly retain the weight between them via the locking member in unlocking and locking configuration respectively.
A fractional-weight holding, weight stack selector shear pin for supporting at least one supplementary, fractional weight member having an aperture and for selecting an effective number of weight plates in a weight stack by inserting the fractional-weight holding, weight stack selector shear pin into operative engagement with a bottom weight plate of the selected weight plates and into operative engagement with a weight plate lifting rod to support the bottom weight and those selected weight plates above the bottom weight plate to the weight plate lifting rod, said fractional-weight holding, weight stack selector shear pin comprising:
In a weight stack of a plurality of weight plates in which an effective number of weight plates in the weight stack are selected by inserting a shear pin into operative engagement with a bottom weight plate of the selected weight plates to support the bottom weight plate and those selected weight plates above the bottom weight plate to a plate lifting rod extending through the plurality of weight plates of the weight stack, the shear pin having a first end for engagement with the plate lifting rod and a second end coaxial with the first end for selectively supporting at least one supplementary weight member having a central aperture, wherein the improvement comprises,
Dependencies are inferred from the claim text.