U.S. patent number 3,648,321 [Application Number 05/027,799] was granted by the patent office on 1972-03-14 for folding utensil.
Invention is credited to Joseph Vallis.
United States Patent |
3,648,321 |
Vallis |
March 14, 1972 |
FOLDING UTENSIL
Abstract
An elongated main body section and an elongated handle section
each have a free end. Cooperating hinge portions in form of hinge
pins or projections and recesses are respectively provided on these
free ends and hingedly connect the sections for relative movement
between the first and the second position in which they
respectively extend in parallelism and in longitudinal alignment
with one another. Cooperating cam means is provided on the ends and
serves to urge the sections into the first position when they are
displaced relative to one another from the second position by a
predetermined amount towards the first position, and vice
versa.
Inventors: |
Vallis; Joseph (Toronto,
Ontario, CA) |
Family
ID: |
21839859 |
Appl.
No.: |
05/027,799 |
Filed: |
April 13, 1970 |
Current U.S.
Class: |
15/185; 132/122;
D28/28 |
Current CPC
Class: |
A45D
24/06 (20130101) |
Current International
Class: |
A45D
24/00 (20060101); A45D 24/06 (20060101); A46b
009/10 () |
Field of
Search: |
;15/184,185
;132/122,145,129 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Feldman; Peter
Claims
I claim:
1. A folding utensil, particularly a folding brush or comb,
comprising an elongated main body section having a first end; and
elongated handle section having a second end; cooperating hinge
portions provided on said ends and hingedly connecting said
sections for relative movement between a first and a second
position in which they respectively extend in parallelism and in
longitudinal alignment with one another; cooperating cam means
provided on said ends and operative for urging said sections into
said first position in response to relative displacement of said
sections by a predetermined amount from said second position
towards said first position, and vice versa; first cooperating
abutment portions on said ends and adapted to abut when said
sections are in said first position; and second cooperating
abutment portions on said ends and adapted to abut when said
sections are in said second position.
2. A utensil as defined in claim 1; and further comprising a
plurality of teeth provided on said main body section and so
positioned as to be located between said sections when the latter
are in said first position.
3. A utensil as defined in claim 1; and further comprising a
plurality of bristles provided on said main body section and so
positioned as to be located between said sections when the latter
are in said first position.
4. A utensil as defined in claim 1, wherein said sections consist
at least in part of synthetic plastic material.
5. A utensil as defined in claim 1, wherein one of said ends is
bifurcated and the other end is configurated so as to be receivable
in the bifurcation of said one end; and wherein said hinge portions
comprise recess means in one of said ends and hinge pin means
provided on the other of said ends and receivable in said recess
means.
6. A utensil as defined in claim 5, wherein said one end is said
first end, and wherein said other end is said second end.
7. A utensil as defined in claim 6, said bifurcated one end
comprising two transversely spaced parts defining with one another
a space in which said second end is receivable; and wherein said
recess means comprises a pair of transversely aligned apertures
having a common axis which extends normal to the elongation of said
body section.
8. A utensil as defined in claim 7, said parts each having an inner
surface facing said space; and wherein said cam means comprises
cooperating cam faces on said inner surfaces and on said second
end.
9. A utensil as defined in claim 8, said parts being elastically
deflectable in direction away from one another and said cooperating
cam faces comprising portions of said inner surfaces which converge
transversely of said space and of the elongation of said main body
section, and surface portions provided on said second end.
10. A utensil as defined in claim 9, said inner surface each being
provided with a depression elongated in direction normal to the
elongation of said main body section as well as to said common
axis, said apertures each being located within the confines of one
of said depressions; and wherein said second end comprises outer
faces each juxtaposed with one of said inner surfaces and each
provided with a ridge elongated normal to the elongation of said
handle section, said ridges being formed with respective axially
aligned studs projecting outwardly of the respective outer faces
and constituting said hinge pin means, said ridges each entering
into one of said recesses when said sections are in said first and
second positions, respectively.
Description
BACKGROUND OF THE INVENTION
The present invention relates generally to utensils, and more
particularly to folding utensils.
The term folding utensil as herein employed is intended to refer to
all such utensils which can be folded for transportation, storage
and the like, and includes household utensils, brushes, combs and
the like. It is of course not new to make such utensils in such a
manner than they can be folded, for instance with the handle
portion being foldable onto or into the main body portion of the
utensil. However, heretofore the construction of such utensils has
always been relatively complicated because folding usually requires
a hinged connection for which it has heretofore generally been
necessary to provide separate hinge means, and also because once
folded to one or the other of their end positions, such utensils
have required separate arresting means for arresting them in the
respective position. All of this necessarily increases the expense
involved in manufacturing and assembling such utensils, and
accordingly their cost on sale.
SUMMARY OF THE INVENTION
It is a general object of the present invention to provide an
improved folding utensil.
More particularly it is an object of the present invention to
provide a folding utensil which is very simple simple and therefore
inexpensive to manufacture and sell.
Still more specifically it is an object of the present invention to
provide such a folding utensil which does not require separate
hinge means and which does not require separating arresting means
for arresting the relatively foldable portions in their respective
end positions.
In pursuance of the above objects, and others which will become
apparent hereafter, one feature of the invention recites in a
folding utensil which, briefly stated, comprises an elongated main
body section having a first end, and an elongated handle section
having a second end. Cooperating hinge portions are provided on
these ends and hingedly connect the sections for relative movement
between a first and a second position in which they respectively
extend in parallelism and in longitudinal alignment with one
another. Cooperating cam means is provided on these ends and
operative for urging the sections into the first position in
response to relative displacement of the sections by a
predetermined amount from the second position to the first
position, and vice versa.
Such a utensil may be a comb, a brush, a folding household utensil
of various different kinds, and in fact any utensil which can be
made foldable. The hinge portions and cam means are of one piece
with the respective sections and consist of the same material as
the same, and because the sections are advantageously of synthetic
plastic material, such as for instance--but not
exclusively--polyamide, the hinge portions and the cam means can be
produced at the same time as the body section and handle section
are produced so that their formation does not require a separate
operating step.
The novel features which are considered as characteristic for the
invention are set forth in particular in the appended claims. The
invention itself, however, both as to its construction and its
method of operation, together with additional objects and
advantages thereof, will be best understood from the following
description of specific embodiments when read in connection with
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a somewhat diagrammatic fragmentary perspective view
illustrating a folding utensil embodying the present invention in
exploded state;
FIG. 2 is a section taken on the line II--II of FIG. 1 but with the
utensil in assembled state;
FIG. 3 is an end view of the main body section of the utensil shown
in FIG. 1, as seen in the direction of the arrow III; and
FIG. 4 is an end view of the handle section of the utensil shown in
FIG. 1, as seen in the direction of the arrow IV.
FIG. 5 is a perspective view showing the embodiment of FIG. 1 in
folded condition.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Discussing now the drawing in detail it is emphasized that although
the folding utensil according to the present invention has been
illustrated in form of a folding brush, this is intended for purely
illustrative purposes and that the utensil could of course be of a
different type, such as a comb, a knife, a scraper or the like.
Reference numeral 1 identifies the main body section of the
utensil, and this main body section is provided with a free end 4
and in the illustrated embodiment with a plurality of bristles 3.
Reference numeral 2 identifies the handle section of the utensil,
with its free end being identified with reference numeral 10.
Reference numeral 5 indicates the two side parts of the end portion
4, which is thus clearly seen to be bifurcated. These side parts
define between themselves a space 6 which at the bottom is closed
by a bottom wall as evident from FIGS. 2 and 3. The side parts 5
have inner surfaces 7 (one visible in FIG. 1) facing the space 6
and each provided with an upright elongated depression 8 extending
normal to the elongation of the main body section 1. Each of the
side parts 5 is further provided with an aperture 9 located within
the confines of the respective depression 8 and transversely
aligned on a common axis. These depressions 9 may go entirely
through the respective side parts 5, or they may extend partially
through the side parts 5 from the inner surfaces 7, within the
confines of the respective depressions 8.
The end portion 10 of the handle section 2 is configurated so as to
be receivable in the space 6 and is provided on its lateral side
faces 10a with a pair of projecting elongated ridges 12 which are
so configurated as to be matingly receivable in the respective
depressions 8. Furthermore, a pair of studs or projections 11
extend outwardly from the ridges 12 at opposite sides of the end
portion 10 (compare FIGS. 1 and 4) and are received each in one of
the apertures 9 when the end portion 10 is located in the space 6.
The space incidentally, converges slightly upwardly from the bottom
wall, which is to say that conversely it slightly diverges in
direction downwardly from the upper open side of the space 6.
It will be appreciated that with the material of the main body
section 1, or at least of the end portion 4 thereof, being
elastically deflectable to at least some extent, the end portion 10
is inserted into the space 6 with a snap action by elastic
deflection of the parts 5 so that the projections 11 can enter into
the respective recesses or apertures 9. When the end portion 10 is
thus connected with the end portion 4 of the main body section 1
and when the sections 1 and 2 are in connected condition located in
longitudinally aligned position as illustrated in FIG. 1, the
ridges 12 are received in the respective depressions 8. If, now,
the sections 1 and 2 are hingedly moved or displaced in direction
from the position shown in FIG. 1 to the closed or folded position
shown in FIG. 5, the ridges 12 will move out of the corresponding
depressions 8 under slight deflection of the portions 5 in
direction transversely away from one another. This deflection is
not so great, however, that the projections 11 would similarly
become dislodged from their respective apertures 9. When the
sections 1 and 2 have been moved the major part of the distance
from their open position shown in FIG. 1 towards their folded
position shown in FIG. 5, the upward convergence of the space 6
with concomitant pressing of the parts 5 against the ridges 12
which are rounded along their edges, tends to urge the sections 1
and 2 to perform continued relative movement until they are in the
completely folded condition shown in FIG. 5. Of course, in this
condition the ridges 12 are again located in the corresponding
depression 8, but this time their position in space has been
displaced through 180.degree. from the position which they assume
in FIG. 1. Thus, in either open or folded condition of the sections
1 and 2, both sections are arrested in their respective
conditions.
There are further provided cooperating abutment shoulders 13 and 14
on the sections 1 and 2, respectively, and they abut as shown in
FIG. 5 when the sections are in closed or folded condition. Of
course, the abutment shoulders 13 and 14 could also be so arranged
that they are not entirely in a butment when the sections are in
folded condition--because ordinarily the entry of the ridges 12
into the depressions 8 would serve to provide for proper
positioning of the sections with reference to one another in folded
condition--but only to serve as an auxiliary abutment means in case
pressure should be exerted upon the sections in a sense tending to
place them further beyond their folded condition. Additional
abutment shoulders 15 and 16 are also provided on the sections 1
and 2, respectively, and abut against one another when the sections
are in the position shown in FIG. 1, but are connected.
It will be appreciated that all portions of both sections are of
one piece with the respective section, and that no additional
elements of an extraneous nature or of a different material are
involved, and that all portions can be formed on the respective
sections at the same time as the sections themselves are produced.
No tools and no skill are required for assembling the sections, and
no extraneous means are necessary for maintaining the sections in
their open or folded condition, respectively.
Thus, a folding utensil according to the present invention can be
produced in a most simple and inexpensive manner, and it will be
appreciated that it will accordingly be inexpensive to sell.
Naturally many different types of materials can be used.
Particularly advantageous are synthetic plastic materials
including, but not limited to, polyamides, and one reason why they
are especially advantageous is that they permit the simple
production of the sections 1 and 2 with their respective portions
by one of the various molding processes. This is not to exclude the
possibility, of course, that additional components may be utilized
in conjunction with the sections 1 and 2. For instance, the
bristles 3 need not be molded with and of the same material as the
section 1, but could instead be of a different material and
separately applied. However, the components which are germane with
reference to the present invention, namely the hinge portions and
the cam portions, are of one piece with the respective
sections.
It will be understood that each of the elements described above, or
two or more together, may also find a useful application in other
types of constructions differing from the types described
above.
While the invention has been illustrated and described as embodied
in a folding utensil, it is not intended to be limited to the
details shown, since various modifications and structural changes
may be made without departing in any way from the spirit of the
present invention.
Without further analysis, the foregoing will so fully reveal the
gist of the present invention that others can by applying current
knowledge readily adapt it for various applications without
omitting features that, from the standpoint of prior art, fairly
constitute essential characteristics of the generic or specific
aspects of this invention and, therefore, such adaptations should
and are intended to be comprehended within the meaning and range of
equivalence of the following claims.
What is claimed as new and desired to be protected by Letters
Patent is set forth in the appended claims.
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