Boots – shoes – and leggings – Boots and shoes – Having particular outsole
Patent
1985-07-29
1986-12-30
Kee Chi, James
Boots, shoes, and leggings
Boots and shoes
Having particular outsole
36 59R, 36 67R, 36134, A43B 1300, A43B 1324
Patent
active
046318429
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a sport shoe sole provided with obstacles.
BACKGROUND OF THE INVENTION
In the prior art there are known sport shoe sole constructions which are provided all the way from toe to heel with some sort of fixed pedestals, such as grooves which are transversal with respect to the proceeding direction, and/or bulges or various different studs or stud-like members located adjacent to each other, and the heel platform proper. Such sole constructions are not particularly well suited for jogging or running exercises. They cause multiple strain in the legs and feet which may easily become sore.
Spikes, studs and other similar pedestals are normally attached to sport shoe soles by means of suitable fastener plates or by screwing them into screw sockets located in the sole. The sole, and consequently the whole shoe, becomes relatively heavy owing to this kind of fastening methods. Moreover, the shoe has to be manufactured in several stages which results in a high price.
Spikes or studs provided with a suitable fastener flange can be attached by pushing them into small pockets which are arranged in the shoe sole. The drawback with this type of sport shoe is the special structure of the sole and the resulting demands set for the spikes or the like--for example the necessity to provide a stiff fastening flange.
SUMMARY OF THE INVENTION
The aforementioned drawbacks can be avoided by employing the sport shoe sole of the present invention, where the sole is provided with either stationary or replaceable pedestals.
The sport shoe sole provided with pedestals, according to the present invention, is particularly well suited to a running or jogging shoe. The pedestals are positioned within the area between the point of support of the ball of the foot and the centre of gravity of the heel, or at least around the border region of this area in the vicinity of the said points; consequently, the legs and feet, while running, are not strained to the same extent as before.
A preferred embodiment of the sole construction renders the possibility to match the pedestals in suitable locking grooves located in the sole, and the particular grooves employed each time can be individually chosen. After testing, each user can place the obstacles so that the dynamic strain in the calves and in the Achilles tendons is as small as possible while running. The flexibility and attenuation properties of the shoe can also be affected by modifying the nature of the pedestals. Moreover, the pedestal or pedestals belts can easily be changed according to the terrain (gravel road, asphalt), weather conditions (rain, sunshine) or the season, and thus the shoes always have the best possible grip. The pedestals also prevent the shoes from wearing out too quickly.
BRIEF DESCRIPTION OF THE DRAWING
In the following preferred embodiments of the present invention are explained in detail with reference to the appended drawings, wherein
FIG. 1 is a sectional side view of the sport shoe sole of a preferred embodiment of the invention, provided with fixed pedestals;
FIG. 2 is a sectional side view of the sport shoe sole of a second preferred embodiment the invention, provided with replaceable pedestals;
FIG. 3 is a bottom view of the sport shoe sole of FIG. 2;
FIGS. 4a and 4b are detailed views of two different locking groove arrangements for a sport shoe, as well as of the pedestals matched in the respective grooves and
FIG. 5 is a partial sectional view of the locking groove and obstacle of FIG. 4a along the line A--A.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The whole area of the sport shoe sole 1 can be provided with pedestals, such as transversal grooves 2' or corrugations, as is seen in FIGS. 1 and 2. When a person, after putting the sport shoes on, remains standing in attention position, the centre of gravity of the body falls on the vertical line PP' drawn via the ankle bone (malleolus medialis), wherein P' refers to the centre of gravity of the heel. While walking or running barefooted
REFERENCES:
patent: 509927 (1893-12-01), Mayer
patent: 3170251 (1965-02-01), Patrick
patent: 4041619 (1977-08-01), Sapper
patent: 4241523 (1980-12-01), Daswick
patent: 4318232 (1982-03-01), Ching
patent: 4348821 (1982-09-01), Daswick
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