U.S. patent number 3,727,249 [Application Number 05/233,026] was granted by the patent office on 1973-04-17 for foldable yoke life preserver.
Invention is credited to Bo Bengt Urban Bonthelius.
United States Patent |
3,727,249 |
Bonthelius |
April 17, 1973 |
FOLDABLE YOKE LIFE PRESERVER
Abstract
A foldable life preserver is described which is usable as a boat
cion. The opening for the head and neck of the user is closed by
folding doors to allow the life preserver to be used as a solid
cushion in either folded or opened form. The doors swing away in
use to expose the opening and to provide additional buoyancy for
supporting the wearer in an upright position in the water.
Inventors: |
Bonthelius; Bo Bengt Urban
(Stockholm, SW) |
Family
ID: |
22875585 |
Appl.
No.: |
05/233,026 |
Filed: |
March 9, 1972 |
Current U.S.
Class: |
441/118; 441/123;
441/127 |
Current CPC
Class: |
B63C
9/115 (20130101); B63C 9/28 (20130101) |
Current International
Class: |
B63C
9/00 (20060101); B63C 9/115 (20060101); B63C
9/28 (20060101); B63c 009/0 () |
Field of
Search: |
;4/134,113,185S,185B,185R ;9/312,7,345,400 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Reger; Duane A.
Assistant Examiner: Sauberer; Paul E.
Claims
I claim as my invention:
1. A foldable yoke-type life preserver comprising a buoyant lower
portion having securing means for attachment to a user's body, a
buoyant upper portion hingedly attached to the lower portion and
having an opening through which a user may insert his head and
neck, and characterized by a pair of buoyant doors hingedly
attached to the upper portion at opposite sides of said opening,
said doors being shaped to substantially fill said opening when in
a closed position whereby the life preserver acquires a
substantially solid shape for use as a seat cushion.
2. A life preserver as defined in claim 1 wherein the buoyant doors
are hinged for opening in a direction toward the user's shoulders,
whereby the doors are retained against movement during use as a
life preserver.
3. A life preserver as defined in claim 1 in which the opening
consists of a lower rectangular portion and an upper semi-circular
portion, and the buoyant doors are hinged on opposite sides of the
lower portion of the opening.
4. A life preserver as defined in claim 1 in which the buoyant
upper and lower portions are constructed of resilient cellular
material and covered by flexible sheet material, and in which the
upper and lower portions are connected by a continuous strip of
said sheet material secured to the respective adjoining ends of
said upper and lower portions to form a hinge.
5. A life preserver as defined in claim 4 in which each of said
upper and lower portions has a thickness L and said hinge means has
a dimension between upper and lower portions of L/2, and said hinge
means is attached to one of said upper and lower portions at an
edge opposite the user and to the other of said portions along a
line substantially midway between its front and back faces, whereby
the life preserver preferentially folds away from the user to
conceal and enclose its outward-facing portions.
6. A life preserver as defined in claim 5 in which the securing
means are contained in a pocket on the outwardly directed face of
the lower portion when not in use, whereby said securing means are
covered when the preserver is in a folded condition.
Description
DESCRIPTION OF THE INVENTION
The present invention relates to flotation devices for water
safety, and particularly to a folding yoke-type life preserver
which is usable as a boat cushion.
Previous foldable yoke-type life preservers have embodied features
which made them usable as boat cushions when folded. By providing
such a dual purpose, the occupants of a boat are more likely to
have the life preservers at hand in the event of an emergency. Such
life preservers are represented by the U.S. Pats. of Brown, Nos.
3,065,476 and 3,152,343.
A disadvantage of prior devices is that the neck opening of the
life preserver must be filled by a plug to create a solid shape
which is usable as a boat cushion. In the prior devices this plug
has taken the form of a mound or protuberance on the lower body
portion of the life preserver which fits into the corresponding
neck opening on the upper portion of the device when folded. While
usable as a seat cushion in the folded position, the cushion is
only large enough for one user and may be unnecessarily thick. The
cushion cannot be opened up for side-by-side use because one
portion contains an opening and the other portion contains an
uncomfortable bulge.
An object of the present invention is to eliminate the
disadvantages of the foregoing prior art and to provide a new and
improved foldable yoke-type life preserver which is usable as a
boat cushion in either the folded or open condition. A further
objective is to utilize the buoyant material used to close the neck
opening for additional buoyancy at the upper portion of the life
preserver, rather than at the lower portion where such additional
buoyancy is not required, and may in fact constitute a hazard.
In the drawings, FIG. 1 is a perspective of an exemplary life
preserver constructed according to the present invention in a flat
or unfolded condition, as it might be used for a side-by-side seat
cushion.
FIG. 2 is a perspective of the life preserver of FIG. 1 position
for use, with the foldable doors swung inward to allow the user to
insert his head and neck into the resulting opening.
FIG. 3 is a detail of the hinge means used to attach the upper and
lower portions of the life preserver of the preceding figures.
FIG. 4 is a side view of the life preserver of FIG. 1 as folded for
use as a seat cushion by one person.
While the invention is described in connection with a particular
exemplary embodiment, it will be understood that it is not intended
to so limit its applicability.
Turning to the drawings, there is shown an exemplary life preserver
consisting of a lower buoyant portion 10 and an upper buoyant
portion 11 connected by a flexible hinge means 12. Secured to the
lower portion 10 is an attachment means consisting of a flexible
cloth tie or tape 13 contained in a pocket 14 attached to the
surface material of the lower portion 10. For use, the tapes 13 are
pulled from the pocket 14 (FIG. 2) and wrapped around the back of
the user and again brought forward to be tied in the front, in a
conventional manner.
In accordance with the invention, an opening 15 is provided for the
head and neck of the user, with the opening being positioned toward
the lower edge of the upper portion 11. Preferably, the opening 15
consists of a rectangular lower portion and a substantially
semi-circular upper portion as shown in FIGS. 1 and 2 to form an
arched opening. The hinge means 12 attaches securely to the
depending sides of the upper portion 11 where they meet the lower
portion 10.
As provided by the invention, a pair of hinged doors 16 are
provided which are constructed of the same buoyant material as the
upper and lower portions 10, 11 of the life preserver. These doors
16 are attached by flexible hinge means 17 to the opposite sides of
the rectangular portion of the opening 15. Preferably, the doors 16
and hinges 17 are secured on the inner side of the upper portion 11
so that they open inwardly toward the wearer. In this manner the
door 16 rest on the wearer's shoulders and are secured against
movement.
It will be seen that a particular advantage of the invention is
that the doors 16, when opened for use, remain adjacent the
wearer's shoulders and serve to enhance the buoyancy of the upper
portion of the life preserver. This is a desirable result, since it
tends to bring the head of a submerged wearer upright in the water,
even if he should be unconscious. The additional buoyancy of the
doors 16 is thus utilized, rather than being sacrificed to another
portion of the life preserver.
As a further feature of the invention, the upper and lower portions
10, 11 are hinged in a manner which allows folding forward (away
from the wearer) to cover and protect the attachment means 13 when
in use as a single boat cushion. For this purpose the hinge means
12 is attached to one or the other of the upper and lower portions
10, 11 at a line substantially midway between the front and rear
surfaces of one body portion, and attached to the other body
portion along its front or outward edge (FIG. 3). If the thickness
of each of the upper and lower portions 10, 11 is L, then the width
of the hinge portion 12 is preferably L/2. This allows for folding
the life preserver flat in the preferred position (FIG. 4) while
preventing complete folding in the opposite direction.
Preferably, the materials used in the life preserver of the present
invention are light in weight and water-resistant. A resilient
cellular foam is preferably used for the body portions 10, 11 of
the preserver, as well as the doors 16. Both body portions and the
doors are preferably covered with a flexible water-resistant sheet
material such as rubberized canvas or heavy plastic.
As a further feature of the invention, the covering material of the
upper and lower body portions 10, 11 is preferably utilized to form
the hinge 12 by stitching, heat sealing or otherwise securing the
seam at the ends of the body portions 10, 11 where they meet the
hinge 12, and using the covering material itself as the hinge
material (FIG. 3).
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