Dumbbell having interlocking components

Exercise devices – User manipulated force resisting apparatus – component... – Utilizing weight resistance

Reexamination Certificate

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Details

C482S098000, C482S108000

Reexamination Certificate

active

07048678

ABSTRACT:
An inexpensive to manufacture dumbbell hardware design with secure, tight tolerance, non-rotating weights having a central handle with ends having a geometric shape and a central bore at least part way through each end, a means for securing one or more weights to the handle located at least partially within the central bore, and one or more weights, each including an interior element and a cast resistance, wherein the interior element provides tight tolerance with the handle having a circumference and a generally central void of a shape complementary to the geometric shape of the central handle, wherein the wherein the weights are secured by a locking bolt have corresponding threads with the central bore.

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Iron Grip brochure, First We Reinvented The Wheel. Now, We've Perfected It. Introducing Urethane Coated Weight Plates From Iron Grip. 1998.

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