U.S. patent number 3,900,923 [Application Number 05/468,069] was granted by the patent office on 1975-08-26 for combination strap and buckle.
This patent grant is currently assigned to Steven Manufacturing Company. Invention is credited to Reet W. Thomas.
United States Patent |
3,900,923 |
Thomas |
August 26, 1975 |
Combination strap and buckle
Abstract
A two ended plastic strap includes an integral buckle formed on
a first end of the strap. The buckle has a longitudinal channel
extending through it which is sized to receive the second end of
the strap. The second strap end includes an upper surface having a
plurality of serrations formed in it which may be held releasably
by a serration engaging receptacle formed in the buckle. The
receptacle is integrally constructed along a flexible finger and
the finger is positioned so that the receptacle normally is in
serration engaging position. The receptacle is designed to permit
serration passage in one axial direction of the channel. Passage of
the serrations in the second direction is accomplished by flexing
the finger so that the receptacle disengages the serrations.
Inventors: |
Thomas; Reet W. (St. Louis,
MO) |
Assignee: |
Steven Manufacturing Company
(Hermann, MO)
|
Family
ID: |
23858313 |
Appl.
No.: |
05/468,069 |
Filed: |
May 8, 1974 |
Current U.S.
Class: |
24/16PB |
Current CPC
Class: |
B65D
63/1072 (20130101); Y10T 24/1498 (20150115); B65D
2563/107 (20130101) |
Current International
Class: |
B65D
63/10 (20060101); B65D 063/00 (); A44B
019/00 () |
Field of
Search: |
;24/73PB,3.5P,17AP,23F,23B,23CF,26A,16R,16PB
;248/68R,71,73,74R,74PB |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Griffin; Donald A.
Attorney, Agent or Firm: Polster and Polster
Claims
Having thus described the invention, what is claimed and desired to
be secured by Letters Patent is:
1. A securing means, comprising:
a first strap portion, said first strap portion having a buckle
structure terminating one end of it, said buckle structure
including means for defining a channel through said structure, said
channel defining means being characterized by a first pair of
oppositely opposed, longitudinally extending side walls, a second
pair of oppositely opposed, axially extending side walls, and an
upper wall, said side walls and said upper wall defining a chamber
therebetween, said axially extending walls having respective
openings in them, the openings in said axially extending walls and
said chamber being arranged so as to define a channel through said
buckle structure, latch means integrally formed with said buckle
structure along said upper wall, said latch means including a
longitudinally extending part having a first end and a second end,
said longitudinally extending part being attached to said upper
wall at said first end, the second end of said latch means
including a part extending outwardly from the longitudinal axis of
said buckle structure, and a part extending along the longitudinal
axis of said buckle structure, a rib member extending between said
first and said second ends of said latch means, and a receptacle
part integrally formed with said latch means, said receptacle part
including a pair of spaced, protruding parts, each of said
protruding parts having a canted wall and a generally vertical wall
extending outwardly from said latch means, said latch means being
resiliently mounted to said buckle so as to permit movement of said
receptacle part between a first position where said receptacle part
extends within said channel, and a second position where said
receptacle part is removed from said channel; and
a second strap portion, said second strap portion including a
terminating end having a first surface area, a second surface area,
a material thickness therebetween, and a plurality of spaced
serrations integrally formed near said terminating end of said
second strap portion along one of said first surface area, said
second surface area, and said material thickness, said serrations
including an arcuate wall and a generally vertical wall extending
outwardly from said second strap portion, the canted wall of said
receptacle part and the arcuate wall of individual ones of said
serrations being designed to meet and permit passage of said second
strap portion through said channel along a first direction of
movement.
2. A securing means, comprising:
a strap having at least a first end and a second end, said second
end having a relatively wide surface area and a predetermined depth
dimension, said second end further having a plurality of spaced
projections, said projections including an arcuate wall and a
generally vertical wall extending outwardly from said wide surface
area; and
a buckle structure integrally formed with said strap along said
first end, said buckle structure comprising a first pair of
oppositely opposed, longitudinally extending side walls, a second
pair of oppositely opposed, axially extending side walls, and an
upper wall between said pairs of said side walls, said side wall
pairs and said upper wall defining a cavity therebetween, said
axially extending walls having respective openings in them so as to
define a channel with said cavity, said cavity being sized to pass
said second strap end, said upper wall having latch means
integrally formed therein, said latch means being resiliently
mounted to said buckle and being biased so as to project within
said channel, said latch means including a receptacle part
comprising a pair of spaced protrusions, each of said protrusions
having a canted wall and a generally vertical wall extending within
said channel, the canted wall of said protrusions and the arcuate
wall of individual ones of said serrations being designed to meet
and permit passage of said second strap in a first direction of
movement of said second strap and through said channel.
3. A securing means, comprising:
a strap having at least a first end and a second end, said strap
having a wide, generally plane surface area and a depth, said
second end further having a plurality of spaced projections along
it, said projections having at least one arcuate surface and one
approximately perpendicular surface extending outwardly from said
plane surface of said strap;
a buckle structure integrally formed with said strap along the
first end thereof, said buckle structure comprising a first pair of
oppositely opposed and longitudinally extending side walls, a
second pair of oppositely opposed side walls, said second pair of
side walls having at least one opening in respective ones of said
second side wall pair, and an upper wall between said pairs of said
side walls, said walls defining a cavity having a channel
therethrough communicating with the respective openings in said
second pair of side walls, said channel being sized to pass said
second end of said strap; and
latch means integrally formed with said buckle structure, said
latch means including a projection engaging receptacle structure,
said projection engaging receptacle structure permitting passage of
said projections in a first direction through said channel and
preventing passage of said projections in a second direction
through said channel, said latch means being pivotally mounted to
said buckle structure between at least a first position and a
second position, said projection engaging receptacle structure
including a pair of spaced protrusions, each of said protrusions
having a canted wall and a generally vertical wall extending within
said channel in at least one of said first and second positions of
said latch means, the canted wall of said protrusions and the
arcuate wall of said projections being arranged to meet and permit
passage of said projections as said strap is moved through said
channel in said first direction.
4. The securing means of claim 3 wherein said strap comprises a
first strap portion including said second strap end, and a separate
second strap portion including said first strap end.
5. The securing means of claim 3 wherein said longitudinally
extending side wall pair each have a boss extending outwardly from
them on the cavity defining side of said last mentioned side wall
pair.
6. The securing means of claim 1 wherein said first strap portion
and said second strap portion are integrally formed with one
another.
Description
BACKGROUND OF THE INVENTION
This invention relates to strap and buckle constructions and in
particular to a low cost strap and buckle design finding
application in low cost roller skates for children. While the
invention is described in detail with respect to roller skate
applications, those skilled in the art will recognize the wider
applicability of the invention disclosed hereinafter.
It is conventional to construct low cost roller skate designs from
some type of plastic material. These lower cost designs in actual
practice, and for the purpose of this specification, include what
commonly are known as beginner roller skates. The particular
beginner roller skates to which this invention has particular
application are intended for use by relatively young children. In
addition to a low cost design, this particular type of beginner
roller skate must be simple to use so that younger children can
master both the art of skating and the preliminary task of
attaching the skates to their podalic extremities.
A number of skate designs are known in the art. These designs
include both conventional strap and buckle attached skates and
self-biasing skates similar to that disclosed, for example, in the
U.S. Pat. to Taylor, No. 3,781,027, issued Dec. 25, 1973, which
eliminates the strap and buckle for attachment. In general,
self-biasing roller skates tend to be more expensive to manufacture
than skates without the self-biasing feature. Consequently, the
more conventional strap and buckle arrangement retains a large
portion of certain roller skate market segments. In particular, the
strap and buckle combination retains that market segment dealing
with beginner roller skates.
Strap and buckle designs commonly used for roller skates follow a
conventional pattern in that they commonly comprise an outer
skeleton frame having a central bar dividing the area enclosed by
the frame into two parts. A tongue or other movable pin is
pivotally mounted to the bar. The tongue is intended to be inserted
in openings in the strap to secure the buckle and strap
combination. The buckle commonly is metallic and must be stapled or
otherwise attached to one of the strap ends. In fastening the
buckle, the tongue must be positioned within the selected opening
in the strap, generally by hand manipulation, before the two parts
can be interconnected. As indicated above, small children generally
have a difficult time making this manipulative effort without the
aid of an adult. Of course, the manipulative effort required to
displace the tongue from the strap opening also is a problem.
The invention disclosed hereinafter eliminates much of the
manipulative effort required by strap and buckle interconnection by
providing a strap and buckle in which one end of the strap is
inserted through a channel in the buckle. The strap has a plurality
of serrations in it and the serrations automatically engage a latch
means provided in the buckle construction. The latch
means/serration interaction permits one way movement of the strap
but inhibits removal of the strap from the buckle. Removal is
accomplished by disengaging the latch means from the serrations in
a simple operation making the buckle particularly suitable for use
by younger children. Since the buckle can be constructed from
plastic, the entire strap/buckle combination may be an integral
unit, if desired, and the conventional problems associated with
attaching a metal buckle to a plastic strap are eliminated.
One of the objects of this invention is to provide a low cost strap
and buckle design.
Another object of this invention is to provide a strap and buckle
combination having the buckle integrally formed with the strap.
Still another object of this invention is to provide a strap and
buckle combination wherein one end of the strap has a plurality of
serrations in it.
Another object of this invention is to provide a strap and buckle
combination particularly well suited for use on low cost roller
skates.
Yet another object of this invention is to provide a strap and
buckle that provides automatic engagement upon insertion of the
strap end within the buckle.
Still another object of this invention is to provide a strap and
buckle combination the operation of which may be mastered easily by
young children.
Other objects of this invention will be apparent to those skilled
in the art in the light of the following description and
accompanying drawings.
SUMMARY OF THE INVENTION
In accordance with this invention, generally stated, a novel
plastic strap and buckle combination is provided wherein the buckle
is integrally formed along one end of a strap length. The buckle
has a longitudinal channel through it and includes integrally
formed latch means biased to project within the channel. A second
end of the strap length or a second strap includes a relatively
broad width part having a plurality of serration like projections
extending outwardly from it, which may be engaged by the latch
means. The latch means/serration design is such as to permit travel
of the serration bearing strap in one direction along the channel
but to prevent travel in a second direction along the channel. The
latch means is pivotally mounted so that travel along the second
channel direction is permitted by disengaging the latch means and
serrations.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings, FIG. 1 is a view in perspective of one
illustrative embodiment of strap and buckle of this invention;
FIG. 2 is a top plan view of the strap and buckle shown in FIG.
1;
FIG. 3 is a view in side elevation, taken along the line 3--3 of
FIG. 2;
FIG. 4 is a longitudinal sectional view of the buckle shown in FIG.
1; and
FIG. 5 is a longitudinal sectional view of the strap and buckle
combination shown in FIG. 2.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIG. 1, reference numeral 1 indicates the
preferred embodiment of strap and buckle combination of this
invention. The strap and buckle 1 may be a single, one piece
article or it may be a two piece device. In either case, the strap
or strap parts have respective ends 2 and 3 which comprise the end
terminations of a portion 30 and a portion 31 of the combination 1,
shown broken away in the drawings.
The end 2 has an upper surface 4, a material thickness 5 and a
bottom surface 6, and is terminated in any convenient design shape.
The rounded end shown is desirable in that it facilitates
interconnection of the portions 30 and 31, as later described.
However, other end terminations are compatible with the broader
aspects of this invention.
The surface 4 has a plurality of serrations 7 integrally formed
with and extending upwardly from it. The serrations 7 include an
arcuate wall 8 and a generally vertical wall 9, vertical being
referenced to FIG. 5, which meet to define an outward end 32 of the
individual serrations. Individual ones of the serrations 7 have a
spacing 36 between the wall 8 of any first serration 7 and the wall
9 of the succeeding serration 7, which spacing is predeterminedly
selected in accordance with design considerations described below.
As indicated, the end 2 may be part of an integrally constructed,
single strap and buckle combination, or the strap may be severed to
define two individual portions 30 and 31. Thereafter, another
object may be connected between the portions 30 and 31. Both
arrangements commonly are used in roller skate constructions. That
is, a roller skate, for example, may have a channel through which
the end 2 of a one piece strap and buckle 1 is threaded, or the
strap and buckle may be severed and attached to the skate by any
convenient means. Thereafter, the skate is attached to the user by
operating the strap and buckle in a normal way.
The end 3 has a buckle 10 integrally formed in it. The buckle 10
includes a first pair of oppositely opposed side walls 11 and 12, a
second pair of oppositely opposed side walls 13 and 14, and a top
wall 15. In the embodiment illustrated, the buckle 10 is open
bottomed and the side and top walls delimit a cavity 16. The side
walls 13 and 14 have aligned openings 17 and 18 in them,
respectively. Each of the side walls 11 and 12 have a boss 19
extending outwardly from them, on the cavity 16 defining side of
those walls. Each of the bosses 19 have a first surface 33 which is
parallel to an outer boundary layer 34 of the portion 31. The
surface 33 and layer 34 also are aligned longitudinally with the
openings 17 and 18 to define a channel 20 through the buckle 10.
The channel 20 is sized to receive the end 2 of the portion 30 and
pass it through the buckle 10 freely, in the absence of other
considerations.
Top wall 15 has a latch means 21 integrally formed in it. The top
wall 15 has an U-shaped groove 22 through it, which surrounds the
latch means 21 on three sides. The latch means 21 is attached to
the top wall 15 along a side 23 of the top wall 15, at the mouth of
the U-shape of the groove 22. Latch means 21 includes a
longitudinally extending section 24 having an outwardly extending
end 25. The end 25 includes a radial part 40 and an axial part 41
which combination offsets the end 25 from the plane of the section
24 and permits easy hand engagement of the latch means 21. A rib
member 26 extends between the part 40 of the end 25 and the side 23
of the top wall 15. Rib member 26 is important in that it provides
structural rigidity to the latch means 21 without hindering the
movement capabilities of the latch means. The buckle 10 is
preferably constructed from a resilient plastic material. The
attachment of latch means 21 at the side 23 in combination with the
resiliency of the material from which buckle 10 is constructed
enables the latch means 21 to operate hinge or spring fashion. That
is, application of a relatively small force along the end 25 will
enable the latch means 21 to rotate out of the plane of the top
wall 15 while the natural resiliency of the material forming the
buckle 10 enables the latch means 21 to spring back into its
original position upon removal of that force.
A lower surface 27 of the section 24 has a serration engaging
receptacle 28 integrally formed with it. The receptacle 28 extends
downwardly from the section 24 so as to project into both the
cavity 16 and the channel 20, in the normal position of the latch
means 21. The receptacle 28 includes a pair of protruding parts 45
and 46 which are spaced from one another for a predetermined
distance sufficient to permit an edge 47 of the parts 45 and 46 to
engage the wall 9 of two successive serrations 7, as best seen in
FIG. 5. The parts 45 and 46 also have a canted wall 48 which is
important in the operation of the strap and buckle 1 of this
invention. As discussed above, the application of pressure along
the end 25 of the latch means 21 will raise the parts 45 and 46
upwardly for a distance sufficient to remove those parts from the
channel 20. As may be observed in FIG. 5, the wall 9 of an
individual serration 7 will abut the edge 47 of the latch means 21
while the arcuate wall 8 of an individual serration 7 will be in
abutting relationship with the canted wall 48 whenever the end 2 is
inserted for a sufficient distance in the buckle 10. While
described as abutting or in abutment, those skilled in the art will
recognize that manufacturing tolerances often are such as to allow
a small degree of play before abutment or an abutting relationship
actually is achieved. The combination of the canted wall 48 of the
latch means 21, the arcuate wall 8 of the serration 7 and the
natural resiliency of the latch means 21 permits the easy and
continued insertion of the end 2 of the strap through the channel
20 as long as pressure is exerted in the axial direction of
movement which brings the walls 8 and 48 into abutment. However,
movement always will be restricted in a second axial direction
through the channel 20 because the natural bias of the latch means
21 will bring the wall 9 and edge 47 into engagement. Finger
pressure applied at the end 25 disengages the serrations from the
receptacle 28 and the end 2 may be withdrawn easily, provided
pressure is maintained on the latch means 21.
As indicated, simple operation is provided. The end piece 2 merely
is inserted through the channel 20 and is drawn to any of a
plurality of selectable positions. Each position automatically
engages two of the walls 9 of successive serrations 7 against the
edges 47 of the parts 46 and 47. Continued movement of the end
piece 2 through the channel 20 in this first axial direction is
accomplished easily because the receptacle 28 is designed to permit
that passage. When the desired position is obtained, movement of
the strap in a reverse or second axial direction is prevented by
the above mentioned engagement of the serrations with the
receptacle 28. There also is sufficient frictional force provided
by the engagement of the latch means 21 with the serrations 7 to
prevent other but intentional movement of the end 2 along the first
axial direction of movement. Because the device is so easy to use,
that is, mere insertion of the end 2 within the buckle 10 will
automatically engage the serrations 7 in the latch means 21, and
because disengagement of the serrations is accomplished by finger
pressure along the end 25 of latch means 21, small children find
the device particularly easy to use. In addition, since the entire
strap and buckle combination may be constructed from plastic,
manufacturing problems are reduced in that no interconnection
between dissimilar materials need be made.
It thus may be observed that a device meeting all the ends and
objects of the invention is provided.
Numerous variations, within the scope of the appended claims, will
occur to those skilled in the art in light of the foregoing
description and accompanying drawings. Thus, while certain of the
walls or edges comprising the latch means 21 and serrations 7 were
described as vertical, for example, they may be varied from a true
vertical position without affecting the operation of the device.
Likewise, the position of the latch means 21 may be changed. Thus,
the latch means 21 may be formed in the walls 11 and 12, if
desired. When so arranged, the serrations may be formed along the
thickness 5 of the end 2. The junction of the latch means 21 and
the top wall 15 may be varied. For example, that juncture may
comprise a more conventional pivotal mounting as distinguished from
the resilient mounting described. The design of the buckle may be
varied in other embodiments. Thus, a bottom wall may be provided
and the latch means may comprise a loop of material having the
serrations engaging device formed in it. Disengagement is
accomplished by flexing or squeezing the loop to operate the
receptacle from the serrations. These variations are merely
illustrative.
* * * * *