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Патент USA US3076576

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Feb. 5, 1963
A. 1'. MOMANUS
3,076,564
PNEUMATIC mm
Filed May 16, 1961
2 Sheets-Shéet 1
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BY
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Feb. 5, 1963
A. ‘T. MOMANUS
3,076,564
PNEUMATIC MEMBER
Filed May 16, 1961
2 Sheets-Sheet 2
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INVENTOR.
ALBA-7P7‘ 7.' NC/VAA/Z/J’
“Maw
ATTORNEY
1
United States Patent C) "ice
3,076,564
Patented Feb. 5, 1963
1
2
3,076,564
attached to the bladder for in?ating the bladder and is
inserted through an aperture in the casing and locked
PNEUMATIC MEMBER
thereto by a suitable nut for maintaining the casing in
Albert T. McManus, Johnston, R.I., assignor to United
position near the other corner. Straps 20 are attached
to the casing to serve as ?exible handles.
States Rubber Company, New York, N.Y., a corpora
tion of New Jersey
As represented in FIG. 4, the bladder may be inserted
Filed May 16, 1961, Ser. No. 110,512
3 Claims. (Cl. 214-105)
through the aperture 12 by rolling the ends of the bladder
toward the center thereof. The bladder may then be
extended manually into proper position within the casing
This invention relates to pneumatic members, and, more
particularly, to pneumatic shorting members also known 10 and the studs may be inserted through the apertures
as dunnage bags.
manually and locked in position prior to in?ation of the
Dunnage bags have particular utility in shoring articles
bladder. If desired, the bladder may be manually ex
tended into a ?at position within the casing with the studs
within freight vehicles to prevent damage to the lading.
approximately in position prior to in?ation, The bag
Dunnage bags heretofore manufactured having an ex
terior ?exible casing and an interior air-retention bladder 15 may then be in?ated to cause the studs to position them
selves within the apertures of the casing automatically
have been subject to the limitation that when a bag is
upon in?ation. The nuts 17 may then be threaded on
de?ated and re-in?ated in the ?eld, the bladder may be
the studs 15.
folded or creased within the casing at the time of in?a
tion. This folding prevents a portion of the bladder
From the foregoing description, it will be apparent
from becoming in?ated and results in excess pressure 20 that a pneumatic member constructed in accordance with
the invention has the advantage that it may be de?ated
and ‘re-in?ated with the bladder maintained in position
within the ?exible casing so that the bladder has no tend
ency to rupture during the rein?ation. Such pneumatic
on another portion of the bladder, causing the bladder
to burst.
It is an object of the present invention, therefore, to
provide a new and improved pneumatic member which
25 members have utility as dunnage bags or may be con
may be repetitively de?ated and in?ated.
structed as collapsible containers for transporting ?uids
It is another object of the invention to provide a new
and improved pneumatic shoring member which may be
or the like.
repetitively de?ated and in?ated in which the bladder
may be readily removed for repair in the event of damage
of the bladder to prevent the corners from being folded
over during de?ation. Further, in the corners of the dun
due to abrasion or the like.
The studs are positioned near the corners
30 nage bag, the bag is more ?exible while in?ated, and,
‘In accordance with the invention, a pneumatic mem
ber comprises an in?atable bladder having a valve there
in and a ?exible casing having an aperture for insertion
of the bladder therein and having other apertures posi
tioned near the extremities of the casing. The member
therefore, slight motion of the studs may occur during
use of the bag without tearing the bag. Moreover, the
rectangular weave of the fabric of the casing becomes
diamond-shaped in the corners of the bag. Thus, the
fabric in the corners is capable of moving slightly in re
also includes studs attached to the bladder near the ex
sponse to stresses which tend to return the weave to a
tremities thereof and extending through the aforesaid
other apertures of the casing. The member also includes
locking means for the studs for maintaining the bladder
in position within the casing upon de?ations and in?a 40
rectangular shape.
This also minimizes any tendency
of the casing or bladder to tear during use of the bag.
Further, by removing the nuts on the studs, the bladder
may be easily removed from the casing.
While there has been described what is at present be
tions of the bladder.
Referring now to the drawings:
lieved to be the preferred embodiment of this invention,
it will be obvious to those skilled in the art that various
FIG. 1 is a plan view of a pneumatic shoring member
changes and modi?cations may be made therein without
constructed in accordance with the invention;
FIG. 2 is a sectional view of the FIG. 1 member, 45 departing from the invention, and it is, therefore, aimed
taken along line 2-2 of FIG; 1;
to cover all such changes and modi?cations as fall within
the true spirit and scope of the invention.
'FIG. 3 is a sectional view to an enlarged scale of a
Having thus described my invention, what I claim
stud utilized in the FIG. 1 member; and
and desire to protect by Letters Patent is:
vFIG. 4 is a perspective view to indicate the method
50
of inserting the bladder in the casing.
1. A pneumatic shoring member comprising: an in
Referring now more particularly to FIGS. 1 and 2
?atable bladder having a valve therein; a flexible casing
having an aperture for insertion of said bladder therein
of the drawings, a pneumatic member 10 constructed in
and having other apertures positioned near the extremi~
accordance with the invention comprises a ?exible casing
11 having an aperture 12 for insertion of an in?atable
ties of said casing; studs attached to said bladder near
bladder 13 therein. The aperture 12 is closed by a ?ap 55 the extremities thereof and extending through said other
apertures of said casing; and locking means for said studs
having interlocking looped teeth through which a rod 12a
for maintaining said bladder in position within said casing
is placed. The casing 11 preferably is a rubberized woven
fabric and the bladder 13 preferably is an air-impervious
upon deflations and in?ations of said bladder.
2. A pneumatic dunnage bag comprising: an inflatable
butyl bag. The dunnage bag 10 may be of any suitable
size, for example, 4 feet by 5 feet by 2 feet when in 60 bladder having an approximately rectangular periphery;
a ?exible casing having an approximately rectangular
?ated.
periphery and having an aperture for insertion of said
The dunnage bag 10 also includes stud means 14 at
bladder therein and having other apertures located at the
tached to the bladder 13 near at least one extremity
corners of said casing; a valve in said bladder near a
thereof and attached to a corresponding region of the
casing 11 for maintaining the bladder in position within 65 corner thereof and attached to the casing; rigid studs
the casing upon de?ations and in?ations of the bladder.
mounted on ?exible bases and attached to said bladder
More particularly, as represented in FIGS. 1-3, ‘the stud
near the corners thereof and extending through said other
apertures of said casing; and locking means for the studs
means comprises metal studs 15 having rubber bases 16
for maintaining said bladder in position within said cas
cemented to the bladder near the corners thereof and
inserted through apertures in the casing and held in 70 ing upon de?ations and in?ations of said bladder.
position by locking means which may be suitable ?anged
3. A pneumatic shoring member comprising: an in
nuts 17 threaded on the studs. A suitable valve 18 is
?atable bladder having a valve therein; a ?exible casing
3,676,564
3
having an aperture for insertion of said bladder therein
and having other apertures positioned near the extremities
of said casing; threaded studs ‘attached to said bladder
near the extremities thereof and extending through said
other apertures of said casing; and nuts threaded on said
studs for maintaining said bladder in position within said
casing upon de?ations and in?ations of said bladder.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,567,117
2,000,873
2,85 6,867
2,942,281
Daniels ______________ -_ Dec, 29, 1925
Arens ________________ __ May 7, 1935
Dasey _______________ __ Oct. 21, 1958
Coe _________________ __ June 28, 1960
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