Boots – shoes – and leggings – Boots and shoes – Occupational or athletic shoe
Patent
1993-06-10
1995-02-28
Sewell, Paul T.
Boots, shoes, and leggings
Boots and shoes
Occupational or athletic shoe
36115, 36 61, A43B 500, A43C 1500
Patent
active
053925378
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
I. Field of the Invention
This invention relates to footwear and refers particularly, though not exclusively, to footwear having a portion of the sole on the outer surface thereof provided with a relatively rotatable member.
II. Related Art and Other Considerations
The ever-increasing incidence of major injuries to people active in sports is of great concern to orthopaedic surgeons. Many of the most traumatic injuries occur during the act of twisting or turning. If the foot is for some reason held rigid, dramatic injuries can occur to the knee, groin, ankle or skeletal parts. In some instances, the injuries are so traumatic that extensive surgery is required, long recuperative periods necessary, and the ability of the person to play the sport again is either eliminated, significantly reduced or delayed considerably.
Part of the problem relates to modern footwear design where the use of special materials and tread patterns on the soles of shoes, particularly in relation to sports such as basketball, netball, football and soccer, means that when the foot is firmly upon the surface, it is very difficult to twist. This has contributed to rather major knee injuries.
It is therefore the principal object of the present invention to provide footwear where on the outer surface of the sole there is provided a relatively rotatable member.
SUMMARY
With the above and other objects in mind the present invention provides an article of footwear having a sole, said sole having a lower surface, there being a recess in said lower surface, and a turntable mounted in said recess rotatable relative to said sole.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the present invention may be readily understood there shall now be described preferred constructions of articles of footwear incorporating the principal features of the present invention, the description being by way of non-limitative example only and being with reference to the accompanying illustrative drawings. In the drawings:
FIG. 1 is an exploded perspective view of a first embodiment of the present invention when viewed from below;
FIG. 2 is a view corresponding to FIG. 1 but in the assembled position;
FIG. 3 is an underneath view of the ball portion of the embodiment of FIG. 2;
FIG. 4 is a view corresponding to FIG. 3 but in the relatively rotated position;
FIG. 5 is a view corresponding to FIG. 3 but being an end elevation view;
FIG. 6 is a view corresponding to FIG. 1 but of a second embodiment;
FIG. 7 is a view corresponding to FIG. 6 but with all components assembled;
FIG. 8 is a cross sectional view (partial) along the lines and in the direction of arrows 8--8 of FIG. 7;
FIG. 9 is a perspective view corresponding to that of FIG. 1 but of a third embodiment;
FIG. 10 is a view corresponding to that of FIG. 1, but of a fourth embodiment; and
FIG. 11 is a view corresponding to that of FIG. 1 but of a fifth embodiment .
DETAILED DESCRIPTION OF THE DRAWINGS
To first refer to the embodiment shown in FIGS. 1 through to 5, there is shown an article of footwear 10 having a sole 12 with a lower surface 14. The lower surface 14 has a recess generally designated as 16 into which is intended to be located a disc 18 and a turntable 20.
To particularly refer to FIG. 1, the recess generally designated as 16 is substantially circular and of a height slightly less than the height of the turntable 20. It has a central lug 22 on the undersurface thereof which serves to locate both the disc 18 by virtue of the central aperture 24 and the turntable 20 by virtue of a cylindrical projection 26. The recess 16 is approximately circular although there are four flats generally designated as 28, the purpose of which will be understood from the following description. The flats 28 are arranged in pairs on either side of an approximately circular recess 30, there being two such recesses 30. The recesses 30 are diametrically opposed and are normally, or preferably, arranged with one at the toe and one towards the heel.
The purpose of the disc 18 is to assist in the rotatio
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patent: 32043348 (1965-09-01), Latson
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patent: 3091043 (1963-05-01), McCorkie
patent: 3707047 (1972-12-01), Nedwick
patent: 3824710 (1974-07-01), Egtvedt
patent: 4271610 (1981-06-01), Parrent
patent: 4541185 (1985-09-01), Chou
Cicconi Beth Anne
Sewell Paul T.
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