# US 4,392,649 A · Hand, wrist and forearm exercising device

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- Number: US 4,392,649 A
- Document ID: US4392649A
- Status: Granted
- Kind: A
- Application number: 06/276,030
- Filed: 1981-06-22
- Granted: 1983-07-12
- Earliest claimed: 1981-06-22
- Inventors: Dan Chapman
- Web page: https://patentgrep.com/patent/US4392649A

## CPC

- A63B 23/03516: {For both arms together or both legs together; Aspects related to the co-ordination between right and left side limbs of a user}
- A63B 23/14: for wrist joints
- A63B 21/00069: {Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve}
- A63B 21/015: including rotating or oscillating elements {rubbing against fixed elements}
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A hand, wrist and forearm exerciser device comprising a roller assembly adapted to be grasped by either one or both hands of the user for rolling or twisting of the assembly about its own longitudinal axis, clamping members secured to the opposite ends of the roller assembly for securing the device to a suitable support structure, such as a bench press apparatus, and an adjustable tensioning assembly operably connected with the roller assembly for applying a preselected resistance to the twisting of the roller to provide an effective and efficient hand, wrist and forearm exercising operation.

## Claims

### Claim 1

A hand, wrist and forearm exercising apparatus adapted to be removably mounted on a support structure and comprising elongated continuous roller means to be grasped about the outer periphery by the hands of the user for twisting thereof about its own longitudinal axis, clamping means secured to the opposite ends of the roller means for suspending the roller means therebetween and securing said roller means to said support structure, and tensioning means operably connected with the roller means and disposed in the proximity of one end thereof, said tensioning means comprising a sleeve means secured in the proximity of one end of the roller means, friction belt means disposed around at least a portion of the outer periphery of the sleeve means, and means operably connected directly to the friction belt means for adjusting the tension of the belt for providing substantially any desired resistance to the twisting motion for an effective exercising of the hands, and wrist and forearm of the user.

### Claim 2 (depends on 1)

A hand, wrist and forearm exercising apparatus as set forth in claim 1 wherein the tensioning means further comprises rotatable adjusting means connected with the friction belt means and rotatable in one direction for increasing the friction of the belt means against the outer periphery of the sleeve means and in an opposite direction for decreasing the friction of the belt means against the outer periphery of the sleeve means.

### Claim 3 (depends on 1)

A hand, wrist and forearm exercising apparatus as set forth in claim 1 wherein the roller means comprises a centrally disposed longitudinally extending rotatable shaft member, an intermediate sleeve means secured around the outer periphery of at least a portion of the shaft member, and a yieldable sleeve member disposed around the outer periphery of the intermediate sleeve means and adapted for engagement by the hands of the user.