Combined exercise platform
First Claim
1. In combination, a two-piece exercise platform for use in step-aerobic exercises comprisinga rectangular hollow top member of substantial thickness having a generally planar upper surface and substantially double-thickness integral hollow peripheral vertical sidewalls with a plurality of internal hollow recesses therein and a hollow central portion extending throughout the vertical extent of said top member beneath said upper surface providing a weight-supporting first riser step of said platform capable of individual use, anda complemental rectangular hollow bottom member having double-thickness integral hollow peripheral vertical sidewalls providing a weight-supporting second riser step of said platform and having at least one pair of upstanding horizontal rib members adapted to telescopically engage within said internal recesses in said top member providing an interlocked structure when stacked with said top member.
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Accused Products
Abstract
This invention relates to an improved adjustable exercise device for use in step benching which utilizes a combination of a two-piece bench step providing both a lower riser step as well as a higher riser step, the two units having an interlocking feature and lightweightness for a stable broad non-slip load-supporting surface which may be approached from any direction and may be readily assembled and disassembled as desired. The step heights may be varied between the 4 inch and 6 inch step heights which are preferred for the several most desirable levels of step benching. In a modified embodiment another base member is innerlocked with the two-piece bench to increase the vertical height of the top support surface.
96 Citations
23 Claims
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1. In combination, a two-piece exercise platform for use in step-aerobic exercises comprising
a rectangular hollow top member of substantial thickness having a generally planar upper surface and substantially double-thickness integral hollow peripheral vertical sidewalls with a plurality of internal hollow recesses therein and a hollow central portion extending throughout the vertical extent of said top member beneath said upper surface providing a weight-supporting first riser step of said platform capable of individual use, and a complemental rectangular hollow bottom member having double-thickness integral hollow peripheral vertical sidewalls providing a weight-supporting second riser step of said platform and having at least one pair of upstanding horizontal rib members adapted to telescopically engage within said internal recesses in said top member providing an interlocked structure when stacked with said top member.
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13. In combination, a two-piece exercise platform for use in step-aerobic exercises comprising
a rectangular hollow top member of substantial thickness having a generally planar upper surface and substantially double-thickness integral hollow vertical sidewalls with a plurality of spaced-apart internal hollow recesses therein and a hollow central vertical wall portion beneath said upper surface extending throughout the vertical extent of said top member providing a weight-supporting first riser step of said platform capable of individual use, a complemental rectangular hollow bottom member of lesser thickness than said top member having doublethickness integral hollow peripheral vertical sidewalls having a plurality of internal recesses therein to strengthen said bottom member, said top and bottom members having facing planar surfaces for surface-to-surface load-supporting contact when stacked to provide a second higher riser step, and interlocking means of said top and bottom members consisting essentially of at least one pair of upstanding rectangular rib members in the upper surface of said bottom member adapted to engage at least two pairs of internal recesses formed internally in the sidewalls of said top member to prevent both lateral and rotational relative movement of said top and bottom members when combined in stacked relation.
Specification