U.S. patent number 3,752,157 [Application Number 05/196,405] was granted by the patent office on 1973-08-14 for disposable headband and filter.
Invention is credited to Oscar Malmin.
United States Patent |
3,752,157 |
Malmin |
August 14, 1973 |
DISPOSABLE HEADBAND AND FILTER
Abstract
A disposable headband and filter bag for use by dentists,
doctors and the like. The headband is stamped or cut from a single
piece of paper or other similar lightweight, inexpensive material
and has a base or head-encircling portion which is perforated at
one end and which carries a series of buttons, snaps, projections,
or other joining means at the other end. At approximately the
midpoint of the blank a top strap integrally projects at
substantially right angles, and this also has a plurality of
apertures or holes. At about the midpoint of the headband, a
supporting member or tab is provided which may be either integral
with the band or removable. At one end also a similar tab is
provided. When folded or bent, the end with the button or other
joining means is brought into engagement with the end with the
apertures, and the buttons or joining means engage the apertures,
with the presence of the plurality of apertures making it possible
to adjust for various head sizes. Similarly, the top strap is
connected to the button and is also adjustable. A filter bag is
provided and may be secured by strips of elastic or similar
material which engage tabs on the filter and the aforementioned
tabs on the headband itself.
Inventors: |
Malmin; Oscar (Akron, OH) |
Family
ID: |
22725272 |
Appl.
No.: |
05/196,405 |
Filed: |
November 8, 1971 |
Current U.S.
Class: |
128/206.12;
128/207.11 |
Current CPC
Class: |
A41D
13/11 (20130101) |
Current International
Class: |
A41D
13/05 (20060101); A41D 13/11 (20060101); A61m
016/00 () |
Field of
Search: |
;128/146.7,142.6,146.2,146.6,142.4,139 ;72/56 ;151/69 ;351/19
;2/3,8 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Gaudet; Richard A.
Assistant Examiner: Recla; Henry J.
Claims
What is claimed is:
1. A disposable headband, comprising:
A. a unitary blank having
1. an inextensible bottom head-encircling portion; and
2. an inextensible top strap diametrically disposed on said
head-encircling portion;
B. means for adjustably interconnecting said top strap and said
bottom head-encircling portion at their point of intersection;
and
C. support means projecting downwardly from said bottom
head-encircling portion in fixed relationship thereto and including
diametrically opposed support members
1. each having an elongated body and rearwardly disposed ear-shaped
anchoring tabs defining upper and lower notches
a. whereby means for mounting mask retaining means are
provided.
2. The device of claim 1 wherein said support means are integral
with said head-encircling portion.
3. The device of claim 1 wherein said support means are releasably
secured to said head-encircling portion.
4. A disposable headband and filter assembly, comprising;
A. a unitary headband blank of inextensible material having
1. an adjustable bottom head-encircling portion
2. a top strap diametrically disposed on said head-encircling
portion;
B. means for adjustably interconnecting said top strap and said
bottom head-encircling portion at their point of intersection;
C. a pair of diametrically opposed support means projecting
downwardly from said head-encircling portion in fixed relation
thereto
1. each having an elongated body and rearwardly disposed ear-shaped
anchoring tabs defining upper and lower notches whereby means for
mounting mask retaining means are provided thereon;
D. a disposable filter having
1. an elongated body with a central opening and ear-shaped
anchoring tabs at opposed ends thereof defining upper and lower
notches;
2. a gasket secured to one side of said body adjacent said opening
and
3. a substantially cylindrical filter bag secured to the opposed
side of said body with its longitudinal axis lying in a plane
substantially parallel to the longitudinal axis of said body;
E. a pair of resilient members each mounted in the notches of
adjacent tabs to releasably interconnect said body to said support
means.
5. The device of claim 4 wherein said support means are integral
with said head-encircling portion.
6. The device of claim 4 wherein said support means are releasably
secured to said head-encircling portion.
Description
FIELD OF THE INVENTION
This invention, in general, relates to filtering devices to be worn
by doctors, dentists, and other similar persons and, in particular,
relates to a low-cost, throw-away or disposable type headband and
filter assembly.
DESCRIPTION OF THE PRIOR ART
The following prior art is known to Applicant:
George U.S. Patent 2,620,794 Stanley U.S. Patent 3,088,200 Watts,
Jr. U.S. Patent 3,170,461 Sachs U.S. Patent 3,288,138 Brown U.S.
Patent 3,531,187
While the above known art shows various types of disposable masks
and also various types of headbands or straps, none of the art
discloses the particular one-piece headband which is the subject of
this application, and furthermore none of the art discloses the
adjustability feature which will be described in greater detail
below.
SUMMARY OF THE INVENTION
It has been found that an inexpensive, yet fully functional
headband and filter assembly can be provided by producing the
headband per se of paper or similar lightweight, inexpensive
material stamped or cut into the form of a blank so that the
headband in its flat condition may be a one-piece unitary item.
It has also been found that by providing perforations at suitable
places on the blank and projecting buttons or other joining means
at equally suitable places, the band can be changed from its flat
condition to a condition in which it would fit the head of a wearer
and, further, that by providing a plurality of these apertures, the
band can be adjusted to fit different head sizes.
It has also been found that by providing either integral or
removable depending support or anchoring members or tabs on the
headband, that the band can be utilized to support a filter mask
which will effectively filter bacteria and other matter both from
entering the respiratory system of the wearer and, conversely, from
the wearer contaminating the patient.
It has further been found that present forms of filter masking do
not allow for the physiologic requirements of respiration and are
therefore inefficient and uncomfortable, hence the necessity of
allowing room by means of a filter bag of ample proportions to
avoid resistance to the force of exhalation, to permit adequate
oxygenation of inspired air to reduce the humidity content of the
inspired air, and to reduce the temperature of inspired air.
It has been found that the filter above-referred to can be provided
with connecting or anchoring tabs or ears, and in this fashion can
be securely fastened to the headband and, further, that a fastening
can be accomplished by resilient members, such as rubber bands,
which will serve to firmly seat the filter on the face of the
wearer.
Accordingly, production of an improved headband and filter bag
assembly of the character above-described becomes the principal
object of this invention, with other objects thereof becoming more
apparent upon a reading of the following brief specification
considered and interpreted in view of the accompanying
drawings.
OF THE DRAWINGS
FIG. 1 is a perspective view of the headband and filter
assembly.
FIG. 2 is a plan view of the headband in its flat condition.
FIG. 3 is an elevational view of the filter bag taken from the side
thereof which would normally be against the face of the wearer.
FIG. 4 is a partial plan view showing a different type of support
tab.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring first to FIGS. 1 and 2, it will be noted that the
headband and filter bag assembly includes a headband 10 and a
filter assembly 20 which are, in use, interconnected by resilient
tension members 40,40.
Considering still FIGS. 1 and 2 for a more detailed description of
the headband assembly, it will be noted from FIG. 2 that the
headband is a unitary one-piece member in its preferred form, which
has a head-encircling portion 11 and a top strap 19.
The head-encircling portion 11 has opposed ends 12 and 13, and the
end 13 has a plurality of perforations or holes 15,15 therein while
the opposed end 12 has a plurality of projecting buttons or other
joining means 30,30 and also has a depending tab or support member
14 which is notched as at 14a for purposes which will be described
below.
Projecting at approximately right angles to the head-encircling
portion 11 is a top strap 19 which also has a plurality of holes or
perforations 19a,19a at its end.
The head-encircling member 11 also has, at about its midpoint, a
plurality of holes 17,17 in the form of the invention shown in FIG.
2. In this form of the invention a second depending tab or support
member 16 is provided and may be secured to the holes by means of
buttons or other joining means 18,18 which are similar to the
buttons or projections or other joining means 30,30 referred to
above.
Alternatively, FIG. 4 discloses an integral depending tab 116 so
that this can either be made of one piece, or the tab 16 could be
removable.
Referring to FIGS. 1 and 3 then for a description of the filter
means 20, it will be noted that the filter includes a base or body
portion 21 with a central aperture 22 therein. The opposed ends of
the filter include ears or tabs 23,24 which are appropriately
notched for purposes which will be described.
Encircling the aperture 22 is a gasket 25 of rubber or some similar
material which will fit over the nose, around the mouth, and under
the chin of the wearer to effectively seal off the nose/mouth
area.
Finally, secured to the body portion 21 is a filter bag 26 which is
substantially cylindrical in nature with opposed rounded ends
27,27. While the invention is not intended to be limited to any
particular size or form, it is believed that the filter bag should
have a minimum volume of about 500 C.C. It should be noted that the
bag extends downwardly and laterally to avoid obstructing the
wearer's vision. For example, additional capacity can be obtained
by rounding the ends 27,27 because greater volume can be obtained
in this way, and this is one of the preferred areas for obtaining
it since expansion of the bag 26 in this fashion and in this area
does not impede the vision of the wearer in any way.
With regard to assembly of the headband, it is simply necessary to
bend the band from its flat configuration, as shown in FIG. 2, to
the configuration shown in FIG. 1, at which time the end 13 will be
secured to the end 12 by means of the buttons 30,30 and the holes
15,15. The plurality of holes, of course, permits ready adjustment
to various head sizes. Similarly, the top strap 19 is simply arched
over, as shown in FIG. 1, and also secured to the buttons 30,30
thereby placing the headband in the configuration shown in FIG. 1
so that it may then be placed on the head of the wearer.
The filter is then secured to the headband by utilization of
tension members 40,40 which are mounted on the tabs 23 and 24 of
the filter and over the tabs 14 and 16 of the headband. Tension or
resilient members are preferred here because they will tend to draw
the filter firmly against the face of the wearer to obtain the best
sealing effect.
It has been shown, therefore, how an improved headband and filter
assembly can be provided by providing a one piece integral headband
which can be stamped or cut in a blank form and manufactured from
relatively inexpensive materials.
Further, an effective filtering and sealing result can be obtained
with a minimum of expense due to the simplicity of the overall
system.
While a full and complete description of the invention has been set
forth in accordance with the dictates of the Patent Statutes, it is
to be understood that modifications may be resorted to without
departing from the spirit hereof or the scope of the appended
claims.
In this regard it is understood that while paper or similar
material has been mentioned, the application is not intended to be
limited to any particular material although it has particular
utility if an inexpensive material can be utilized so as to make
the overall unit economically disposable.
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