Exercise devices – For track or field sport – Jumping – vaulting – or hurdling
Patent
1992-08-10
1994-08-02
Apley, Richard J.
Exercise devices
For track or field sport
Jumping, vaulting, or hurdling
482 38, A63B 6522
Patent
active
053341198
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a holding apparatus or cupholder for a hurdle boom. The boom is supported by the cupholder to a desired height by tightening of the cupholder on a vertical pillar.
BACKGROUND OF THE INVENTION
A known boom support is presented in German publication nr 2 311 697. That support can be moved in the vertical direction and turned on a pillar which has a round cross-section. This boom support is locked on the pillar by tightening a brake wedge against the surface of the pillar. The wedge stands out from a sleeve-like gliding part. The holder or support consists of an extension, on which the boom is situated.
The above-mentioned boom holder has various shortcomings. For example, it is impossible to get the same pressing or locking force repeatedly after one or several openings. Also, it is desired for a boom support to give in during training or use when pressed down with a certain force. With the mentioned boom holder, there is no control for the locking force of the tightening apparatus, and it is also impossible to tighten the holder over and over again with the same locking force. In addition, the gliding part of the holder is so wide on the pillar that it can turn crosswise a little when the holder is locked on the pillar. This causes the locking forces to vary uncontrollably because the gliding part or the pressing wedge can press even depressions in the pillar surface with their sharp edges.
With the cupholder according to the present invention, these shortcomings are avoided.
SUMMARY OF THE INVENTION
The most important advantages of the invention are that the locking or tightening force of the boom holder can be set beforehand and the holder has the same tightening force after several openings. Also, the turning of the holder around the pillar can be prevented by using polygonal pillars and correspondingly shaped polygonal gliding parts of the holders. As the holder should stay in place during a race and also when the boom is falling down, the polygonal pillar is also advantageous in preventing any turning of the holder in these circumstances. Of course, during training, round pillars are safe because the holders can give in downwards and turn around the pillar. With the present invention, moving and turning of the holder on the pillar can additionally be made easier by adjusting the locking apparatus so that the diameter of the sleeve-like gliding part is opened to a greater degree.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following, the invention is described in detail with references to the attached drawings.
FIG. 1 is a top plan view of a cupholder according to the present invention.
FIG. 2 is a top plan view of the cupholder of FIG. 1 in an opened position.
FIG. 3 is a front elevation view of the cupholder of FIG. 1.
FIG. 4 is a front elevation view of another embodiment of a cupholder according to the present invention.
FIG. 5 is an elevational perspective view of combined hurdle.
FIG. 6 is an end elevation view of a boom supported by a cupholder according to the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In FIG. 1, there is shown a boom holder or cupholder which has a round gliding part 1. A cupped support 2 is fixed to and extends from the gliding part 1. It will be appreciated that gliding part 1 is like a broken or split sleeve in that it can bend and tighten around a round pillar. To one of the free ends of the break points of the gliding part 1 there is fastened a tightening apparatus 3 while to the other free end there is fastened an opposite part 4 which together comprise a tightening means. The opposite part 4 has bendings 8 at both ends so that loop 11 of the tightening apparatus 3 can both pull when tightening and push when opening the gliding part 1. The loop 11 consists of a threaded extension engaging the apparatus 3 which threaded extension has a corresponding nut. The length of the extension can thus be adjusted by turning the loop, so that the inward or radial pressing force of the gliding part 1 against th
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Apley Richard J.
Donnelly Jerome
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