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Патент USA US3023988

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March 6, 1962
w. F. HUCH
Filed Aug. 28, 1959_
II% 1 ,
United States Patent 0 M1C@
Wiliiam F. Huch, St. Paul, Minn, assignor, by nresne as
signments, to the United States of America as repre
sented by the Secretary of the Navy
Filed Aug. 28, 1959, Ser. No. 836,836
' Patented Mar. 6, 1962
rim 38 as by means of a tape 40 from a roll 42 and the
application of heat to provide a ?rm juncture at 44. The
upper end of the load line 28 is then knotted to provide a
head 46 which is inserted in the lower end of the cylin~
der 26, whereupon the lower part of the cylinder is
gathered so as to closely embrace the line below the head
and there securely tied as at 48.
With this construction it is apparent that the load stress
This invention relates to high altitude plastic balloons
is transmitted by the bias-mesh cone 16 evenly to the cir
of the bottom-appendix type, and is concerned more par 10 cumference of the balloon rim, so that the balloon plastic
ticularly with an improvement in the suspension of the
cannot be subject to local stress, and thus a frequent cause
of balloon failure on high altitude ?ights is eliminated.
The load often imposes severe stresses on the bottom of
The cone 16 has the additional property, by reason of
3 Claims. (Cl. 244-31)
such a balloon. It has been the custom to employ a num
its porosity, of providing a bottom opening for the balloon.
ber of strings, usually six, uniformly spaced circumferen 15 A standard or other suitable skirt type appendix (not
tially, taped to the open bottom of the truncated cone of
shown) is used.
plastic material of the balloon, and secured to a load ring,
to suspend the load. Because of the strings, the balloon
material was subjected to localized, rather than even,
Obviously many modi?cations and variations of the in
vention are possible in the light of the above teachings.
It is therefore to be understood that within the scope of
stressing, and, unless applied with extreme care, the taping 20 the appended claims the invention may be practiced other
could tear the balloon material.
It is an object of the invention to provide a balloon
wise than as speci?cally described.
I claim:
constructed to support a load in such a manner that the
1. A high altitude balloon system comprising a plastic
load does not locally stress the balloon fabric.
balloon having an inverted frusto-conical bottom portion,
Another object is to provide a plastic balloon with a 25 a perforated inverted cone of bias-mesh woven fabric se
bottom load attachment having a valving opening and so
cured at its base to the lower edge of said bottom portion,
constructed as to relieve the plastic of any local stresses
the apex portion of the cone being open, a load line closely
which might tend to arise from the load.
embraced by the apex portion of the cone, and a load
Further objects and advantages of the invention will
suspended from the line, the line having within the cone a
appear as the description proceeds.
30 terminal head engaging the cone and of a size such that
The invention will be better understood on reference
it will not pass through the apex portion of the cone,
to the following description and the accompanying more
whereby the cone will transmit load stress uniformly to
or less schematic drawing, in which:
the circumference of said bottom portion.
FIG. 1 is an elevational view of a fully in?ated balloon
2. A high altitude balloon system comprising a plastic
system constructed in accordance with the invention.
35 balloon having an inverted frusto-conical bottom portion,
FIG. 2 is an enlarged elevational view showing features
a skirt of the same girth as and sealed throughout its
of the invention in detail.
upper circumference to the bottom margin of the balloon
FIG. 3 is a fragmentary view, partly in elevation, taken
plastic, said skirt having a mosquito netting mesh with
as indicated by the line 3-—3 in FIG. 2.
the threads biased to the ends of the skirt, and a load line
FIG. 4 shows a ?rst step in a method of making the 40 having a head in and engaging the skirt, the bottom of the
skirt being gathered and secured about the line below the
FIG. 5 shows a panel resulting from the second step.
head and positively preventing the head from escape
FIG. 6 shows a cylinder formed from the panel of
FIG. 5.
3. In a high altitude balloon system, a plastic ?lm
FIG. 7 shows the cylinder being taped to the bottom of 45 balloon having an inverted frusto-conical bottom portion,
the balloon plastic.
a bias-mesh netting skirt whose upper end is continuously
Referring now more particularly to the drawing, dis
sealed to the entire circumference of the open bottom
closing an illustrative embodiment of the invention, there
margin of said portion, a load line terminating at its upper
is shown at 10 a high altitude balloon system comprising
end in a knot within the skirt, the lower end of the skirt
a balloon 12 of plastic such as polyethylene or Mylar 50 being gathered and tied about and against the line below
having, when, in?ated, an inverted frusto-conical bottom
the knot and engaging the bottom of the knot and posi
portion 14. An inverted cone 16 of light close-mesh cloth,
tively preventing the knot from passing therethrough, the
such as mosquito netting or curtain material, with the mesh
entire load carried by the balloon being suspended from
biased, as shown at 18, is suspended from the bottom por
the line.
tion 14, and a load line 20, carrying a load 22, is sus~ 55
pended from the cone.
References Cited in the ?le of this patent
The cone 16 in accordance with the invention may be
made from a cylinder 26 formed by cutting unbiased mesh
cloth from a bolt 28 of suitable wdith at suitably spaced
Gammeter ___________ __ Apr. 6, 1920
45° diagonals 30 to form a parallelogram panel 32 and 60 2,728,540
Ebneter ______________ __ Dec. 27, 1955
suitably seaming together the other two edges 34, as at
Ryan _______________ __ Nov. 20, 1956
36, the edges 30 thus constituting the ends of the cylinder,
and the mesh being now biased, as seen at 18. The panel
32 is dimensioned so that the cylinder diameter conforms
to that of the rim 38 of the balloon portion 14.
An end 30 of the cylinder 26 is now connected to the
Froehlich ____________ _.. Apr. 7, 1959
Huch _______________ __ Aug. 18, 1959
France ______________ __ Mar. 18, 1922
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