1. Field of the Invention
This invention relates to clamping devices.
More particularly, the present invention relates to devices normally employed as clamps on generally cylindrical pipes or bars.
In a further and more specific aspect, the present invention relates to retaining weights on weightlifting and barbell devices.
2. The Prior Art
Devices which are used as clamps on pipes, bars, shafts and the like are well known in the art. Specifically, devices for retaining weights on a bar for weightlifting applications are well known. Generally, a bar is provided onto each end of which disk shaped weights are mounted alone or in combination. Each disk shaped weight has a hole through its center, through which the bar is inserted. The weight disks are prevented from sliding off the bar by a collar which is placed on the bar between the outermost weight disk and the end of the bar. There are a large variety of collars, each preventing the weight disks from moving.
When weightlifting devices of the barbell type are used, it is very important that the disk shaped weights are securely held on the bar. Considerable damage could occur if a weight disk were to become detached while the barbell was in use. Many of the prior art collars are secured to the bar with a screw extending through the collar. When the screw is tightened, it engages with the bar, locking the collar in place. While these clamps are generally effective, since the screw engages a very small area of the bar, it must be very tight to be adequately secured. This frequently makes the clamp difficult to remove, even when the screw has a lever to facilitate engaging and disengaging the collar. This may be a problem, since many times, a collar must be removed frequently so the weight configuration can be changed. This can occur because an exercise program requires different weights, or more than one person is using the barbell and each requires different weights.
It would be highly advantageous, therefore, to remedy the foregoing and other deficiencies inherent in the prior art.
Accordingly, it is an object of the present invention to provide a quick releasing clamp.
Another object of the present invention is to provide a barbell clamp which securely engages the bar, but is easily removed.