Technical Knockout, Inc.

USA Sports, Inc.

Robert E Harms

Eugenio Segovia, Jr

Louis Lien

Annie Wu

Rick Byrd

Eugene Segovia

Robert Tanko

Bob Tanko

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.

Dumbbell having interlocking components

Dumbbell

Vertical weight rack

An improved weight plate includes a planar body having a central opening for receiving a barbell or dumbbell bar therethrough. The weight plate includes oppositely facing flange members extending partially about the perimeter of the weight plate. The opposed ends of the flange members are spaced from each other and define a gap therebetween. The flange members extend perpendicularly from both sides of the weight plate planar body about the perimeter thereof. The weight plate includes at least one opening formed adjacent the perimeter of the weight plate. The opening is adapted to receive one or more fingers of an average human hand for securely grasping and lifting the weight plate. Adjacent weight plates mounted on a barbell bar are adapted for interlocking engagement.

Weight plate

Barbell weight plate

Weight plate support tree

Growing community of inventors

Houston, TX, United States of America

Robert E Harms