U.S. patent number 3,870,324 [Application Number 05/425,153] was granted by the patent office on 1975-03-11 for roller skate construction.
Invention is credited to Edward Balstad.
United States Patent |
3,870,324 |
Balstad |
March 11, 1975 |
Roller skate construction
Abstract
A skate structure including a foot plate having downwardly
depending sockets, with the latter receiving a resilient cushion
blocks therein. An axle housing is nested in the lower end portion
of each block, and these elements are secured together by a bolt.
The lower threaded bolt end passes through a washer; and the
construction is such that neither the bolt nor washer can turn due
to the stresses caused during use of the skate. The wheel axle is
press fitted in the housing and positioned generally normal to the
above-mentioned securing bolt. To prevent interference between the
axle and bolt, the axle is offset from the center housing axis, and
is also provided with a cut-away portion through which the bolt
passes. When a braking member is mounted at the skate toe, the
front socket cooperates with the braking member to prevent the
latter from turning about its axis.
Inventors: |
Balstad; Edward (Cambridge,
WI) |
Family
ID: |
23685396 |
Appl.
No.: |
05/425,153 |
Filed: |
December 17, 1973 |
Current U.S.
Class: |
280/11.28;
280/11.209 |
Current CPC
Class: |
A63C
17/02 (20130101); A63C 17/1436 (20130101) |
Current International
Class: |
A63C
17/00 (20060101); A63C 17/14 (20060101); A63C
17/02 (20060101); A63 () |
Field of
Search: |
;280/11.28,11.2,11.27,11.19,11.26,11.22,11.21,7.13,11.1R
;151/3,2,70,68 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Schonberg; David
Assistant Examiner: Smith; Milton L.
Attorney, Agent or Firm: Andrus, Sceales, Starke &
Sawall
Claims
I claim:
1. A roller skate comprising:
a. a foot plate,
b. a plurality of sockets extending downwardly from said foot
plate,
c. a resilient cushion block disposed in each said socket,
d, a horizontally extending axle support member disposed at the
lower end of said block,
e. an axle extending through said support member,
f. skate wheels mounted on the ends of said axle,
g. means to secure said support member to said block, said means
comprising:
1. a bore extending downwardly through said block and said support
member,
2. a bolt disposed in said bore,
3. a nut on the lower end of said bolt,
4. and a washer member disposed between said nut and said
support,
h. complimentary engaging flats on said bolt and said washer to
lock said bolt against rotation due to torque forces occurring
during shating,
i. and a recess disposed in the outer wall of said support member
remote from said cushion block and with said recess having opposed
side walls,
j. said washer being generally rectangular and disposed within said
recess and locked against rotation by said side walls.
2. The skate of claim 1:
a. wherein said rectangular washer includes a generally flat base
which is disposed in said support member recess as well as
downwardly extending flanges disposed on the ends of said
washer,
b. said flanges being disposed in close proximity to said nut to
provide stop means preventing substantial turning of said nut in
response to relatively low torque forces occurring during
skating.
3. The skate of claim 2 in which said flanges are slightly flexible
so that the said stop means are overcome and said nut can rotate
through 360.degree. when relatively high torque is applied
thereto.
4. The skate of claim 3 in which said nut is thicker than the
downward extent of said flanges to provide a wrench gripping
surface free of interference by said flanges.
5. A roller skate comprising:
a. a foot plate,
b. a plurality of sockets extending downwardly from said foot
plate,
c. a resilient cushion block disposed in each said socket,
d. a horizontally extending axle support member disposed at the
lower end of said block,
e. an axle extending through said support member,
f. skate wheels mounted on the ends of said axle,
g. means to secure said support member to said block, said means
comprising:
1. a bore extending downwardly through said block and said support
member,
2. a bolt disposed in said bore,
3. a nut on the lower end of said bolt,
4. and a washer member disposed between said nut and said
support,
h. and a recess disposed in the outer wall of said support member
remote from said cushion block and with said recess having opposed
side walls,
i. said washer being generally rectangular and disposed within said
recess and locked against rotation by said side walls.
Description
U.S. PRIOR ART OF INTEREST Balstad Patent 2,466,070 Issued April 5,
1949 Balstad Patent 2,595,751 Issued May 6, 1952
BACKGROUND AND SUMMARY OF THE INVENTION
This invention relates to a roller skate construction and more
particularly to a wheel mounting arrangement therefore which is an
improvement over my two above-identified prior patents, and which
provides a simplification of the structure disclosed particularly
in my U.S. Pat. No. 2,595,751.
The mounting arrangement for each skate wheel assembly provides a
maximum cushioning support, and the assembly can be put together
and also disassembled very easily and quickly.
The invention contemplates a skate structure including a foot plate
having downwardly depending sockets, with the latter receiving a
resilient cushion block therein. An axle housing is nested in the
lower end portion of each block, and these elements are secured
together by a bolt. The lower threaded bolt end passes through a
washer; and the construction is such that neither the bolt nor
washer can turn due to the stresses caused during use of the skate.
The wheel axle is press fitted in the housing and positioned
generally normal to the above-mentioned securing bolt. To prevent
interference between the axle and bolt, the axle is offset from the
center housing axis, and is also provided with a cut-away portion
through which the bolt passes. When a braking member is mounted at
the skate toe, the front socket cooperates with the braking member
to prevent the latter from turning about its axis.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings illustrate the best mode presently
contemplated by the inventor for carrying out the invention.
In the drawings:
FIG. 1 is a side elevation of a roller skate constructed in
accordance with the invention, with parts broken away and in
section;
FIG. 2 is an exploded perspective view of the wheel mounting
assembly;
FIG. 3 is a front elevation of the skate with parts broken away and
in section;
FIG. 4 is a fragmentary bottom plan view of the skate with parts
broken away and in section;
FIG. 5 is a view similar to FIG. 4 and showing a slightly different
embodiment of bolt locking means; and
FIG. 6 is a fragmentary perspective view of a skate including a
braking member, and with parts broken away.
DESCRIPTION OF THE PREFERRED EMBODIMENT
As shown in the drawings, the invention is embodied in a roller
skate 1 having the usual foot plate 2 to which a shoe 3 (shown
fragmentarily) is either permanently or removably attached in the
usual manner. Plate 2 is provided with front and rear downwardly
depending sockets 4 and 5 respectively; which are preferably joined
at their bases by an arcuate reinforcing rib 6 extending along
plate 2. As shown, sockets 4 and 5 are disposed with their
longitudinal axes 7, 8 extending generally vertically but inclinded
slightly toward each other in a downward direction.
The aforementioned sockets are adapted to receive wheel mounting
assemblies 9, with both contemplated as being generally similar or
identical. For this reason, only the front skate structure will be
described in detail. Front socket 4 is shown as having a generally
cylindrical lower wall portion 10 which merges upwardly into a
generally conical wall portion 11 with the latter terminating in an
upper socket opening 12 having an annular shoulder 13 disposed
about its upper periphery. A pair of spaced diametrically opposed
longitudinally extending ways 14 are disposed in the inner socket
walls, for purposes to be described.
Wheel mounting assembly 9 includes a resilient cushion block 15 of
rubber or other suitable material. Block 15 is generally solid and
is formed so that its outer surface generally compliments the inner
socket walls. That is, it includes a lower generally cylindrical
straight wall portion 16 which merges upwardly into a generally
conical wall portion 17, with both wall portions having spaced
diametrically opposed longitudinally extending rubs 18. A
cylindrical neck 19 extends upwardly from wall portion 17, with the
upper neck portion enlarged as at 20, for purposes to be
described.
To position block 15 within socket 4, it is merely necessary to
align ribs 18 with ways 14 and push and squeeze enlarged portion 20
through upper socket opening 12 so that the block is wedgingly held
in its proper place.
A generally horizontal transversely extending arcuate recess or
seat 21 is formed in the lower outer end of block 15. Seat 21
receives an elongated transversely extending solid cylindrical axle
support member 22, through which an axle member 23 passes. Axle 23
is preferably press fitted into support 22 and extends outwardly
from each end thereof for receiving a pair of skate wheels 24.
Wheels 24 may be of any suitable construction and bearing means,
not shown, permit rotation of the wheels relative to axle 23.
Support 22 is fixedly secured within seat 21. For this purpose, an
axial bore 25 extends through cushion block 15 and support 22, and
a bolt 26 is disposed therein. The bolt head 27 is disposed at the
top of block 15 and a washer 28 is disposed between head 27 and
enlarged portion 20.
Although block 15 can twist in response to torque forces on axle 23
during skating, it has been found desirable to prevent bolt 26 from
turning on its axis. Therefore, the invention contemplates means to
lock the bolt against turning. In the embodiment shown, a washer 29
is confined between a multi-sided tightening nut 30 and support 22.
Washer 29 is generally rectangular and is provided with a generally
flat base portion 31 and end flanges 32 which are inclined
downwardly therefrom. Base portion 31 is received in a
complimentary recess 33 formed in the outer wall of support 22 on
the side remote from block 15 and through which bore 25 extends.
The side edges of washer base 31 are in close proximity to the
opposed recess side walls so that washer 29 cannot turn in the
recess. In addition, in the embodiment of FIGS. 1-4, the washer
opening 34 is provided with a flat 35, and compliments and engages
a flat 36 on the threaded lower end of bolt 26. Thus, when the
wheel mounting is assembled, bolt 26 can't turn in washer 29 and
the washer can't turn on support 22. A double lock is thereby
provided for the bolt.
In addition, means are provided to lcok nut 30 against any
substantial turning on bolt 26 in response to the relatively low
torque forces occuring during skating, said locking means being
overcomable by substantially higher torque forces applied by a
wrench or the like. This locking or stop means comprises the
flanges 32 which are disposed in close proximity to the multi-sided
edge of nut 30 and which are engaged thereby if the nut turns
slightly under low torque. See FIG. 4. Flanges 32 are constructed
so as to be slightly flexible so that, given high torque forces
such as by manual nut turning with a wrench, the flanges will flex
to permit 360.degree. turning of the nut for application or removal
purposes.
Nut 30 is thicker than the vertical extent of flanges 32 so that
there will be a wrench gripping surface available which is free of
interference by the flanges.
It is also contemplated that axle 23 is offset from the central
axis of support 22, which intersects bore 25, so the axle and bolt
26 do not interfere to any substantial extent. In the embodiment
shown, axle 23 is provided with a cut-out or recess 37 through
which one side of bolt 26 passes. The depth of recess 37 is
preferably less than the axle radius. The described construction
serves to lock axle 23 against possible turning in its support
22.
When assembly 9 is mounted in socket 4, the lower end portion of
block 15 will extend beyond the socket. In addition, a portion of
the socket wall may be cut back, as at 38, to accommodate support
22.
In some instances it may be desirable to replace washer flat 35
with a flat 39 in the bore portion 25 of support 22. See FIG. 5. In
this case, flat 39 will compliment and be engaged by bolt flat 36
to keep the latter from turning.
Some roller skates, especially those of professionals, utilize a
braking member at the toe to permit quick stops or abrupt and
complicated turns. In the embodiment shown in FIG. 6, the front toe
end of skate 1 is provided with a downwardly depending and slightly
inclined boss 40 disposed forwardly of socket 4. Boss 40 includes a
threaded bore 41. A generally cylindrical braking member 42 having
an outer wall 43 is secured to boss 40 by a bolt 44 threaded into
bore 41, and is also inclined on its axis 45.
In accordance with this aspect of the invention, cooperative
interengaging means between front socket 4 and member 42 are
provided to keep the latter from turning on bolt 44. For this
purpose, the curved outer front wall of socket 4 extends generally
vertically, and the inclined inner portion of braking member wall
43 is notched, as at 46, with the socket wall received within the
notch to prevent rotation of the braking member.
Various modes of carrying out the invention are contemplated as
being within the scope of the following claims particularly
pointing out and distinctly claiming the subject matter which is
regarded as the invention.
* * * * *