U.S. patent number 3,840,923 [Application Number 05/374,227] was granted by the patent office on 1974-10-15 for ventilating cover or mat.
Invention is credited to Jan Bos.
United States Patent |
3,840,923 |
Bos |
October 15, 1974 |
VENTILATING COVER OR MAT
Abstract
A ventilating cover composed of a great number of adjacent
uniform polygonal elements, each element comprising at least one
internal channel extending between two opposite end faces and
having at least one hole in its top surface connecting the upper
surface of the element with the internal channel, connecting means
being provided in two perpendicular directions such that the
internal channels of adjacent elements communicate with each
other.
Inventors: |
Bos; Jan (Groningen,
NL) |
Family
ID: |
19816385 |
Appl.
No.: |
05/374,227 |
Filed: |
June 27, 1973 |
Foreign Application Priority Data
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Jun 27, 1972 [NL] |
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7208819 |
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Current U.S.
Class: |
5/499; 5/482;
5/724 |
Current CPC
Class: |
A61G
7/05715 (20130101); A47C 23/00 (20130101) |
Current International
Class: |
A47C
23/00 (20060101); A61G 7/057 (20060101); A47c
023/00 () |
Field of
Search: |
;5/352,557,334,347,354 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Gilliam; Paul R.
Assistant Examiner: Calvert; Andrew M.
Attorney, Agent or Firm: Breitenfeld & Levine
Claims
What I claim is:
1. A mat for a mattress, the mat being intended to support a human
body above the mattress so as to allow ventilation between the body
and mattress, the mat comprising:
a. a plurality of polyhedral elements, each element having:
I. a substantially flat, polygonal upper surface,
Ii. a channel beneath said upper surface and extending between two
side faces of said element, and
Iii. a connecting hole between said upper surface and said channel,
and
b. a flexible connecting member for binding said elements together
into a unitary assembly, said channel in each element communicating
with channels in adjacent elements, and said upper surfaces of said
elements being contigious to form a substantially continuous mat
surface.
2. A mat according to claim 1, characterised in that the flexible
connecting member consists of a wire and each element has at least
one bore, which is parallel to the upper face of the element,
through which the wire extends.
3. A mat according to claim 2, characterised in that each element
has at least two bores, the corresponding number of connecting
wires of each element cooperating with bores of double the number
of adjacent elements.
4. A mat according to claim 2, characterised in that each of the
elements is shaped as a rectangular box and is provided with two
parallel bores perpendicular to the direction of the channel, each
connecting wire fitting with some play into the bore, and the cover
being composed of rows of elements which are situated transverse to
the direction of the wire, adjacent rows of elements being
staggered with respect to each other.
5. A mat according to claim 2, characterised in that each of the
elements is hexagonal and is provided with bores which are
staggered by 120.degree..
6. A mat according to claim 1, characterised in that the channel in
each of the elements has a U-profile with two upright sides which
stand perpendicular to the upper face of the element.
7. A mat according to claim 1, characterised in that the elements
are manufactured from a non-elastic insulating material.
8. A mat according to claim 1, characterised in that the flexible
connecting member consists of a flexible sheet glued to the
elements.
Description
DISCUSSION OF THE PRIOR ART
My invention relates to a ventilating cover or mat for e.g.,
mattresses, to support the human body, the mat being constructed
from uniform polygonal elements. Such a mat provides generally an
adequate support for the body but has, however, the drawback that
transpiration and moist secretion of the human body are not
sufficiently drained away.
SUMMARY OF THE INVENTION
It is an object of my invention to provide a mat which does not
have the aforementioned drawbacks. To this end, each of the
elements of the mat has a substantially flat upper surface, while
parallel to the upper surface in each of the elements at least one
channel extending between two end faces, is provided at least one
connecting hole is made between the upper surface and the channel
and finally a flexible connecting member is applied between at
least two adjacent elements which are always situated in such a way
with respect to each other that the channels communicate with one
another.
It is a further object of my invention that no condensation of
moist air will occur in the vicinity of the human body. Another
object consists in that air can flow through the continuous
channels whereby the body is cooled and also sufficiently aired. As
a consequence the skin will nowhere be isolated from the atmosphere
and infections will not so easily set in. The upper face of the
cover composed of a multitude of flat elements provides plenty of
points of contact with the body so that nowhere locations of
increased pressure will arise.
DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a part of the cover according to the invention,
FIGS. 2 and 3 shows two embodiments of an element; and
FIG. 4 shows another embodiment of the cover.
DESCRIPTION OF PREFERRED EMBODIMENTS
In FIG. 1 a part of a cover 1 is represented. This cover is
constructed from elements 2. Each element 2 (FIG. 2) has a flat
upper surface 3 and a channel 4 extending parallel to this surface
between two opposite end faces. A connecting hole 5 is made in the
upper face whereby the upper surface 3 is connected with the
channel 4. The elements 2 are positioned such that the channels 4
of the various elements communicate with each other. Apertures 7
are bored in the upright side faces 6 so that a wire or string 8
(FIG. 1) can be passed therethrough.
Two wires 8 extend through each element 2 and keep the various
elements against each other in such a manner that transverse to the
direction of the wire rows of elements are formed, while adjacent
rows are staggered with respect to each other. In order to increase
the rigidity of the cover or mat, wires may also be applied in the
longitudinal direction of the channels 4.
Another embodiment is represented in FIG. 3. In this case the
element is box-shaped, with the same dimensions from the element as
represented in FIG. 2. However, this embodiment is also closed on
the underside which enhances the rigidity. The internal channel now
consists of a cavity 9.
FIG. 4 represents how a cover or mat can be constructed from
hexagonal elements. The connecting wires extend through the
elements at angles of 120.degree. with respect to each other.
The upright side faces 6 are perpendicular to the upper surface 3.
A cross section through the element represented in FIG. 2 shows a
U-profile. It is advisable to manufacture the elements from a
non-elastical insulating material which is preferably both tough
and hard.
Preferably elements with dimensions to the size of 1 or 2 cm (3/8
to 1.0 inch) are used so that an adaption of the cover to any
curved surface is possible.
One of the advantages of this cover consists consequently in its
flexible adaptation. This is possible on account of the great
quantity of small elements or blocks which are loosely connected in
juxtaposition by a nylon wire which does not cause any friction and
allows sufficient tension. It is also conceivable to keep the
elements together by causing them to adhere to a sheet of fabric or
plastic material whether provided with holes or not. Under these
circumstances the nylon wire 8 can be omitted.
With a patient lying in bed there is always the problem of airing
or ventilating. This is very important and in the cover according
to my invention airing is possible due to the interconnected air
channels 4 to 9 which ensure that no condensation occurs on the
surface of the human body; the night wear of the patient does not
stick to the body and irritation or red spots on the skin do not
set in.
A patient can also be much simpler nursed. In use of the cover the
operation of turning a patient on his side can be easily performed
by one person this is so because a bed sheet can so easily glide on
the cover.
The cover can moreover be cleaned simply which is of importance
when it is used in hospitals. The cover is preferably made of a
synthetic material which is more or less tough and hard.
* * * * *