Boots – shoes – and leggings – Boots and shoes – With adjustment of shoe size
Patent
1998-02-27
2000-10-31
Sewell, Paul T.
Boots, shoes, and leggings
Boots and shoes
With adjustment of shoe size
36102, 36 31, A43B 326
Patent
active
061383856
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a shoe sole having a jointed section that expandable in length in a jointed area between a front sole and a rear sole, and at least one adjustment means with a spindle running approximately in a direction of a longitudinal axis of the sole in such a way that, in one direction of rotation of spindle of the adjustment means, the front and rear sole are moved toward one another and in an opposite direction of rotation of the spindle of the adjustment means, the front and rear sole are moved away from one another.
2. Description of Related Art
A shoe sole of the type to which this invention is directed is known from U.S. Pat. No. 4,944,099.
The adjusting spindle projects over the rear edge of the heel. In the area of the rear heel wall, it has an annular groove into which a guide plate that is inserted into the heel wall engages. With the aid of the guide plate and the annular groove of the adjusting spindle, the spindle can be mounted rotatably and immovably in the heel wall. When the adjusting spindle rotates via a head that projects over the rear edge of the heel, the rear section of the front sole is drawn into the heel or pulled back out from the latter depending on the direction of rotation. As a result, the size of the shoe can be continuously adjusted.
When running, as is generally known, the heel is stressed at its lower edge with maximum step-down pressure. High stressing of the heel material therefore occurs in the area of the guide plate. As a result, the adjusting spindle that runs through the entire heel is subjected to extreme bending stress, especially in the rear area, when stepped on in this way. The jointed area of the front sole is not configured in an expandable manner in this sole design.
SUMMARY OF THE INVENTION
This invention is to achieve the object of further developing a shoe sole of the above-mentioned type in such a way that the heel material at the rear edge is no longer so heavily compression-stressed and no bending moment or only negligible bending moment is exerted on the adjusting spindle.
This object is achieved by the features of the invention described below.
According to the invention, from the inside the head of the adjusting spindle can rest virtually directly on the rear thrust block in the smallest adjustable shoe size, so that the heel is not penetrated by the adjusting spindle and works like a conventional heel. In the largest adjustable shoe size, the adjusting spindle projects a maximum of about 2/3 of the way to the rear into the heel. In this case, however, there is no great stress of the heel material in the area of the rear heel edge, so that the wear on the material is greatly reduced there compared to the configuration that is known from DE-PS 189777.
Additional advantageous details of the invention are described in more detail below based on the embodiments that are depicted in the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a rear sole section with the jointed area viewed from the side,
FIGS. 2-4 each show a side view along section I--I of FIG. 5,
FIG. 5 shows a top view of the sole section of FIGS. 1 to 4,
FIG. 6 shows a view along section II--II of FIG. 5,
FIG. 7 shows a side view of a sole section with attached or integrated lateral upper section along section III--III of FIG. 8,
FIG. 8 shows a top view of the sole section according to FIG. 7,
FIG. 9 shows a view along section IV--IV of FIG. 8,
FIGS. 10a to 10f show possible cross-sectional shapes of to the jointed section and
FIGS. 11 to 16 show embodiments with a pressure spring or pressure springs provided in the jointed section.
FIG. 17 shows an embodiment with elastically expansible diaphragms or plates.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In FIGS. 1 to 6, a shoe sole which consists of a front sole or of a front sole section 2, a rear sole or a rear sole section 3, and a jointed section 4, is referred to as 1. Jointed section 4 extends over or approximately over jointed area 4'.
Indiv
REFERENCES:
patent: 2815588 (1957-12-01), Ruane
patent: 4166329 (1979-09-01), Herbig
patent: 4178925 (1979-12-01), Hirt
patent: 4507879 (1985-04-01), Dassler
patent: 4944099 (1990-07-01), Davis
patent: 5029575 (1991-07-01), Zhivotchenko et al.
patent: 5060402 (1991-10-01), Rosen
patent: 5425186 (1995-06-01), Hoyt
Jungkind Roland
Sussmann Reinhold
Widmann Horst
Mohandesi Jila
Puma Aktiengellschaft Rudolf Dassler Sport
Safran David S.
Sewell Paul T.
LandOfFree
Shoe sole, and shoe with such a sole does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shoe sole, and shoe with such a sole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shoe sole, and shoe with such a sole will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2039398