Wrist exercise device

DETAILED DESCRIPTION The present invention is concerned with modifying a wrist exercise device such as in U.
S.
Pat.
No.
3,666,267, the details of which are incorporated herein by reference thereto.
This modification of the wrist exercise device is such that the wrist exercise device is additionally converted into a dumbbell.
Dumbbells are perhaps the most popular device in the fitness health exercise field.
Thus, the invention combines both exercise devices into a single device.
This permits the user to use the device as a dumbbell having variable or fixed weights or to develop both hand, wrist and forearm strength using the variable tension mechanism.
FIGS.
1 and 3 illustrate the details of the wrist exercise device 10 which is based upon the principles of U.
S.
Pat.
No.
3,666,267.
As illustrated therein an elongated bar is adapted to receive the user's clenched hand by having the user's fingers F grasp the shaft while the second palm P of the user's other hand is at right angles to the first palm.
A friction producing means carried between the shaft and the turning disk opposes a force exercised by the hands tending to turn the turning disk with respect to the shaft.
Thus, the wrist of the clenched hand is exercised in a direction at right angles to the first palm, while the wrist of the other hand is exercised in the plane of the second palm.
As illustrated in FIGS.
1 and 3 the device 10 includes a hollow shaft or tubular sleeve 11 having a lower flange 12 integral therewith.
Tubular sleeve 11 also has a seat portion 13 for receiving a disk 18 which accommodates a compression spring 14 at one end thereof.
The spring 14 is confined by a cap or tension knob 15 which has a depending flange 16.
The cap or tension knob 15 has an outer extension 16 and tension knob 15 carries a longitudinal shaft 17 which is threadably secured to an internal bore within a sleeve 19.
The sleeve 19 is secured to an outer disk 20 carried integrally at right angles thereto.
The turning disk is a wheel having a rim 22 carried by a flat web 23