AN IMPROVED SPIKE

CRAMPON AMELIORE

English Abstract

This invention relates to an improved spike installed in a sole of a
shoe and consists of a receptacle having a base and several connecting
seats integrated around the edge of the base in one piece flexibly moving
in proportion to the base. Several spikes are installed unto individual
connecting seats extruding the sole. Accordingly, each connecting seat
and partial spikes are wrapped up by the flexible sole. When spikes
receive an external force causing connecting seats to deviate slightly and
simultaneously, the elasticity of the sole material and elastic recovery of
each connecting seat are used ingeniously to create proper grip.

Claims

WHAT IS CLAIMED IS:
1. Improved spikes are installed inside a flexible sole of a shoe and
consist of a receptacle having a base and several connecting seats
integrated around the edge of the base in one piece flexibly moving in
proportion to the base. Several spikes are installed unto individual
connecting seats extruding the sole. Accordingly, each connecting seat
and partial spikes are wrapped up by the flexible sole. When spikes
receive an external force causing connecting seats to deviate slightly and
simultaneously, the elasticity of the sole material and elastic recovery of
each connecting seat are used ingeniously to create proper grip.
2. For a first said spike in Item 1, the receptacle is made of metal
material.
3. For a first said spike in Item 1, each connecting seat has one stand
with a hole into which one end of a spike inserted.
4. For a first said spike in Item 3, the section of each stand is shaped
like a circle to form a hole.
5. For a first said spike in Item 4, each connecting seat has one
foundation bent around the edge of the base. Every stand is connected to
the outer end of the foundation.
6. For a first said spike in Item 1, every spike/tack is made of metal
material.
7. For a first said spike in Item 4, there is one dent corresponding to
the spike/tack on each stand to pack the spike/tack.
8. For a first said spike in Item 5, two sides of each foundation are
relative to the hole on the stand. Each spike/tack is connected against the
6

end surface of the foundation.
7

Description

CA 02526727 2005-11-14
An Improved Spike
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to footwear. More particularly, the invention
is directed to improve spikes.
2. Description of the Related Art
Spikes are commonly installed on the bottom of footwear for
skidproof and grip effects when shoes wearers stand or walk on grass or
places with soft soil. Hence, footwear with spikes is mostly designed for
exercise doers like track and field and golfing, etc.
Spikes are usually divided into two types. One is single column
spikes and the other is disc-shaped spikes. Though several spikes are
arranged on the bottoms of shoes for the first type; however, not many
spikes are installed on the bottoms due to cost and design. Consequently,
this type has single-point grip that is not sufficient. Furthermore, the
reacting force is sent back to the feet of the wearers stamping on the
ground, which causes discomfort for the wearers. A number of spikes are
installed to enhance the skidproof effect for the second type. Nevertheless,
the design of a rigid disc with many spikes is only effective in slip
resistance without any real grip.
SUMMARY OF THE INVENTION
The main purpose of this invention is to provide spikes that may
1

CA 02526727 2005-11-14
solve the aforementioned problems. Each spike may deviate flexibly to
create excellent skidproof and grip effects.
Accordingly, to achieve the aforementioned purpose, this invention
relates to an improved spike with a receptacle installed in a sole of a shoe
and a base and several connecting seats integrated around the edge of the
base in one piece flexibly moving in proportion to the base. Several
spikes are installed unto individual connecting seats extruding the sole.
BRIEF DESCRIPTION OF THE DRAWINGS
A description of the content and the technology of this
invention along with drawings is made in detail as follows:
Figl is an exploded view of a first preferred embodiment of the
present invention;
Fig2 is an exploded view in parts of the first preferred embodiment
of the present invention.
Fig3 is a view of the first preferred embodiment of the present
invention installed on the sole showing spikes inserting to the ground.
Fig3A is an amplification display view in parts of Fig3.
Fig4 is another view of the first preferred embodiment of the
present invention installed on the sole showing spikes inserting to the
ground.
Fig4A is an amplification display view in parts of Fig4.
Fig5 is an exploded diagram of the second preferred
embodiment of the present invention.
Fig6 is an exploded diagram of the third preferred embodiment
2

CA 02526727 2005-11-14
of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
First, refer to Figs. 1 thru 3. Spikes 10 in a preferred
embodiment of the present invention are installed unto a flexible sole 21
of a shoe 20 and constituted by one receptacle 12 and several tacks 14.
The receptacle 12 is made of flexural metal material and has a base
22 and three connecting seats 24 formed by bending the piece extruding
the outer edge of the base 22 for slight flexible deviation relative to the
base 22. One foundation 26 is bent and formed on the edge of the base 22.
One stand 28 is connected to the foundation 26 and bent into a circle for
the hole 29.
Each tack 14 is made of metal material harder than that of the
receptacle 12 and inserted into corresponding hole 29espectively.
Thus, the receptacle 12 is situated in the sole 21 and the end of each
tack 14 extrudes the sole 21 at a proper length. Consequently, every
connecting seat 24 and tack 14 are enclosed by the flexible material of the
sole 21 The flexibility of the sole 21 and slight flexible deviation of the
connecting seat 24 relative to the base 22 are ingeniously designed for a
proper grip for each tack 14.
As the angle of the feet and the ground changes slightly while
walking, the angle formed by each spike 10 installed on the bottom of the
shoe 20 and the ground also varies as shown in Fig3. When each tack 14
draws in slightly, every tack 14 on the sole 21 will be compressed
resulting in a rebounding force that will coordinate the slight expanding
3

CA 02526727 2005-11-14
elastic recovery of each connecting seat 24 in proportion to the base 22.
Consequently, the expanding strength of each tack 14 can be increased
and the skidproof and gripping effects of every tack 14 can be enhanced.
On the contrary, when each tack 14 expands outwardly a little bit as
shown in Fig4, every tack 14 outside the sole 21 will be pressed resulting
in a rebounding force that will draw the tack 14 in and coordinate the
slight drawn-in elastic recovery of each connecting seat 24 relative to the
base 22. In this way, the drawn-in strength of each tack 14 will be
motivated and the skidproof and gripping effects can be enhanced.
Refer to the spike 30 in Fig5 for another preferred embodiment of the
present invention. The structure is identical to that of the spike 10 in
general. The differences are the cone-shaped end of each tack 32 and a
dent 36 on the outside of each connecting seat 34 corresponding to the
tack 32 to prevent each tack 32 from getting loose from the connecting
seat 34 or being squeezing into the inner end of the connecting seat 34
because of an external force. Therefore, each tack 32 can be clipped
tightly and the excellent skidproof and gripping effects disclosed above
will be achieved.
Refer to the spike 40 in Fig6 for still another preferred embodiment
of the present invention. Both sides of the foundation 43 of each
connecting seat 42 are bent relatively and corresponding to the hole 46 of
the stand 44 so that the inner end of each tack 48 can be propped up
against the end surface of the foundation 43. As a result, each tack 48
won't squeeze towards the inner end of the connecting seat 42 affecting
gripping effect.
4

CA 02526727 2005-11-14
Accordingly, the spike of this invention works with the wrapped
connecting seat and the sole flexible material of the tack perfectly via
each connecting seat deviating opportunely and flexibly. A better grip is
generated by changing elastic recovery appropriately no matter what
angle of deviation is when each tack contacts the ground. This invention
indeed has more excellent skidproof effect compared with other
commonly known spikes.
15
25
5

Representative Drawing