Spike assembly for sports shoes

A spike assembly for a sports shoe comprising a spike body formed into a screw element at one end and a spike element at the other end. The middle portion is formed into a flange with a serrated surface facing the screw element. A washer having a serrated surface is mounted on the screw element so that the serrated surfaces of the washer and the flange may engage each other to prevent turning. An annular member made of synthetic resin is also mounted on the screw element to support the washer which is provided with peripheral projections adapted to be engaged with the sole of the shoe.

SUMMARY OF THE INVENTION 
This invention relates to a spike assembly for attachment to the sole of a 
shoe for sports such as golf or the like. 
A known spike assembly for sport shoes includes a washer adapted to be 
applied to the sole of a shoe and a spike body adapted to be screwed into 
the shoe sole through a center opening of the washer. These are prepared 
separately and, at the time of application thereof, the two members are 
assembled together as one set and are combined together by being attached 
to the shoe sole. Such separate type is advantageous in that the spike 
body is easy to manufacture and can be firmly combined with the washer on 
the shoe sole. But it has the unavoidable disadvantage that, in general a 
group of the spike bodies and a group of the washers are separately stored 
and, on application thereof to the shoe sole, one is taken out from each 
group thereof and these are assembled together into one set. 
This invention has as its object to provide a spike assembly wherein the 
spike body and the washer are assembled together into one set ready for 
application so as not to be separable from each other, and so that the 
storage thereof before application and the application thereof to the shoe 
sole can be facilitated. It is characterized in that there is prepared a 
spike body having at its middle portion a flange and formed at its one end 
portion into a screw element and at its other end portion into a spike 
element; a washer is loosely mounted at its center opening, which is 
somewhat larger in diameter than the screw element, on the screw element, 
so that the flange and the washer face one another at their respective 
serrated surfaces which are engageable one with the other to prevent 
turning; an annular member made of synthetic resin is mounted at its 
opening which is somewhat smaller in diameter than the screw element, on 
the screw element so as to support the washer from the outside thereof; 
and the washer is provided at its peripheral edge with turning proof 
projections which are adapted to be engaged with the sole of a shoe.

DETAILED DESCRIPTION 
One embodiment of this invention will now be explained with reference to 
the accompanying drawings: 
Referring to the drawings, numeral 1 denotes a spike body having at its 
middle portion a flange 2 and formed at its end portion into a screw 
element 3 and at its other end portion into a spike element 4. A circular 
washer 5 is loosely mounted at its center opening 6, which is somewhat 
larger in diameter than the screw element 3, on the screw element 3 so 
that the washer 5 rests upon the flange 2. 
The mutually facing surfaces of the flange 2 and the washer 5 are provided 
with respective serrated surfaces 7, 8 so as to be engageable one with the 
other to prevent turning. An annular member 11 made of synthetic resin is 
forceably mounted at its center opening 11a, which is slightly smaller in 
diameter than the screw element 3, on the screw element 3, whereby the 
member 11 is in abutment with the outer surface of the washer 5, while the 
member 11 is kept in engagement at its opening 11a with the screw element 
3, the same supports the washer 5 from the outer surface of the washer 5, 
and consequently the washer 5 is assembled with the spike body 1 so as not 
to come off the latter. 
If the spike body 1 of the assembly is turned by utilizing chamfered 
surfaces 4a, 4a formed on opposite side surfaces of the spike element 4 
and thereby the screw element 3 is screwed into the shoe sole, the washer 
5 is pushed by the flange 2 and the serrated surfaces 7, 8 are brought 
into engagement one with another, and thereafter the washer 5 is turned 
with the same and is pushed against the shoe sole for attachment thereto. 
The washer 5 is provided at its peripheral edge with cut portions 10, and 
one side corner edge of each cut is slightly bent inwards to form a 
projection of claw form 9, and thus the spike body 1 is prevented from 
being unscrewed owing to the fact that the projection 9 eat into the shoe 
sole thus preventing the washer 5 from unscrewing or loosening. In 
addition, due to the fact that the washer 5 and the flange 2 are in 
engagement one with another through the serrated surfaces 7, 8, the spike 
body 1 can be prevented from unscrewing. 
According to this invention, the spike body 1 and the washer 5 are 
assembled together previously into a spike assembly so as not to be 
separable one from another in such a manner that the washer 5 is loosely 
mounted at its center opening 6 on the screw element 3 of the spike body 1 
and the annular member 11 is mounted on the screw element 3 to support the 
washer 5 from the outside thereof, so that storage and application of the 
spike assembly can be facilitated as compared with the conventional 
separate type in which the spike body and the washer are selected as one 
set and assembled together at the time of application thereof. 
Additionally, according to this invention the annular member 11 is made of 
synthetic resin and has a center opening 11a which is smaller in diameter 
than the screw element 3, so that the spike assembly can be prepared 
easily and simply only by putting a light force on the screw member 3. 
Further, the spike body 1 is prevented from being unscrewed by the turning 
proof means of the projections 9 peripherally arranged on the washer 5 and 
of the engagements between the serrated surfaces 7, 8 of the washer 5 and 
the flange 2, and thereby it is assured that the spike assembly remains 
stable for a long period.