# US 5,348,522 A · Auxiliary magnetic weights and method of using same

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- Number: US 5,348,522 A
- Document ID: US5348522A
- Status: Granted
- Kind: A
- Application number: 07/985,886
- Filed: 1992-12-04
- Granted: 1994-09-20
- Earliest claimed: 1989-02-06
- Inventors: Eric M. Brotman
- Web page: https://patentgrep.com/patent/US5348522A

## CPC

- A63B 21/0728: {with means for fixing weights on bars, i.e. fixing olympic discs or bumper plates on bar-bells or dumb-bells}
- A63B 21/072: Dumb-bells, bar-bells or the like {, e.g. weight discs having an integral peripheral handle}
- A63B 21/00065: {by increasing or reducing the number of resistance units}
- A63B 21/0628: {for vertical array of weights}
- A63B 2209/08: magnetic
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

An auxiliary weight system for use with weight exercising apparatus such as free weights or weight stack machines. The auxiliary weights include magnets for releasably attaching the auxiliary weights to vertical surfaces of the main weights forming a part of the weight exercising apparatus. The auxiliary weights are formed with small weight values and may be magnetically secured to the main weights to change the aggregate weight value being lifted by small amounts. The auxiliary weights may be stored by magnetically affixing them to existing racks or framework associated with the weight exercising apparatus.

## Claims

### Claim 1

A method for incrementally modifying the weight of weight exercise apparatus for use in systematic muscle exercise by raising and lowering weights in graduated amounts, wherein said weight exercise apparatus is provided by a free weight having a horizontal bar and first and second generally disk-shaped weights mounted on said bar so as to present vertical surfaces at opposite extremities of said bar, said vertical surfaces having a portion subject to magnetic attraction, wherein said method comprises the steps of:
providing first and second auxiliary weights of the same incremental weight value, each including a magnet; and
magnetically affixing said first and second auxiliary weights to the vertical surfaces of said first and second generally disk-shaped weights solely with said magnets while said free weight and auxiliary weights are raised and lowered during muscle exercise.

### Claim 2

A method for incrementally modifying the weight of weight exercise apparatus for use in systematic muscle exercise by raising and lowering weights in graduated amounts, wherein said weight exercise apparatus is provided by a weight stack machine having a stack of weight plates which in stacked configuration present a vertical surface during use, said vertical surface having a portion subject to magnetic attraction, wherein said method comprises the steps of:
providing an auxiliary weight including a magnet and having a desired incremental weight value; and
magnetically affixing said auxiliary weight to said vertical surface solely with said magnet while said stack of weight plates and auxiliary weight are raised and lowered during muscle exercise.