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Патент USA US2119183

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vMay31,11=131s.'
G_SEDLMAYR
.
PARACHUTE
~
_l
'
Filed sept. 1o. 1956` '
21,119,183
Patented May 31,1938
' 2,119,183
UNITED STATES PATENT OFFICE
2,119,183
.
PABACHUTE
`
‘ Gerhard Sedlmayr, Berlin-Tempelhof, Germany
Application September 10, 1936, Serial No. 100,181
`_
In Germany September 16,' 1935
_1g claims. _(cl. en_-142)
‘Experience has shown that in parachute jumps
or 'drops' the opening shock or jerk doesl not
always‘take place in the middle axis of the para
chute body or canopy but usually excentrically,
5 asa result of which a locally strictly limited vlolent stress is 4brought about on _the parachute
- -canopy which is attended by the danger of the
canopy
fracturing.
»
_
~
y
`The object of this invention is to construct the
lo parachute so that the danger of fracture which
arises during excentric opening shock is removed
by the canopy of the parachute being able to yield
to the load shock or jerk.
.
'
Heretofore the shroud lines of parachutes have
>w either been led and fixed only at the lower skirt
ofthe parachute canopy, 0r' also led up tothe
skirt ofthe air outlet opening situated at the
of thesepull lines the parachute canopy or the
air outlet opening can be displaced or‘distorted
onv the .carrier formed by the suspension lines, as> .
a result of which the parachute can be-steered
to a certain extent and its speed of descent regu- 5
lated.
The accompanying drawing shows~ one con
strùctional form of the parachute provided by
this invention by way of example. .
`At the edge _of the parachute canopy a, _which 10
is made up'in the4 known manner from sector
like panels, shroud lines b and b’ are ñxed which
are led from one side of the body over the vertex
to the other side. 'The lines b' are securely con
nected with the skirt c of the air outlet open- 15
in_g d. The lines b_ are movably connected with
the Asaidjskirt c; this movable connection can
'vertex of thel canopy and then ñxed both here be effected in any desired manner, e. g. by fasten
as well as at the lower skirt of the parachute - ing eyes or small collars or tubes e to the skirt c
20 canopy; it is also' known. to .allow thel shroud through which the lines b `are led.4 It is ad- 20
visable to construct these guides for the lines
lines to run from one sideV of the parachute can.
' opy over its vertex or the air outlet opening or so that the lines in them are able to move with
' vent down to the other lower skirt of the canopy, the Vsmallest possible friction. As a result there
each individual suspension line then being fixed fore the parachute canopy on _opening can be
25 on each side of the lvertex of the canopy or at displaced tol a considerable extent on- the car- 25
the skirt. of the air outlet opening as' well as Y rier formed by the shroud _lines b and .so an
» equalization or compensation provided in the case
at the lower skirt of the body.
»
y
According,- to this invention the shroud lines - of excentric opening4 shock.
Further, pull lines or cords -g may be _loosely
guided from,.one side of ‘ theparachute canopy
laid in all or in some meridian seams f, prefer- 30 '
30 over lthevertex to the other side are fastened on
both `sides only-at >thetlower skirt> of the para
‘» chute body, whilst von'the other hand vthey are
ably uniformly distributed' meridian seams, which "
shock» or jerk in consequence of this displace
ability to such an extent that the stress brought
40' about bythe shock'is distributed over a consid
varied with theconsequence that the 'parachute
pull lines at the. top -are fixed at the skirt c of
the vent' d or in the proximity thereof to the
displaceably »connected to the skirt of the vent, parachute
body, and are led downwardly to with
so that thev parachute canopy can be> displaced
convenient reach of the.jumper. By pulling 35
35 `within certain _limits on the carrier formed by `in
on these lines, for example on one,v the position or
the suspension lines. By this .means the para
' chute canopy `can yield to -an excentrlc opening` A the shape of the air outlet opening» d can-be
erable part of the4 parachute'body,l and therefore
the local danger of» fracture is diminished. It is
not absolutely lnecessary that all the suspension
can be steered and its rate of descent regulated.
>What I claim is:---
A
40
1. A parachute comprising in combination' a
canopy having Iat least one air vent,l anda plu
rality of suspension lines running from one side
`of the. canopy over the vertex .thereof to` thev
, 4l theparachute body or to the vent skirt; apart other side, all of -said lines being fastened to the 45
of the shroud lines may also be Afixed at the lower skirt of the canopy and at least some of
top or skirt of the vent without removing the said lines being displaceably attached to the
skirt of at least one air vent..
"
,
'
possibilityfof equalizlng the stress during .ex
2. A parachute comprising in combination a
lcentric opening shock.
60 -_ According to a further constructional form of. canopy having an air vent, guiding elements at- 50
the invention pull lines or cords are loosely laid tached to the skirt of said airvent, and a plu
`in all or in certain ofthe meridian seams or rality of suspension lines running from one side
pockets, which pull lines are fixed at the top _at of the canopy over the vertex thereof to the other
the skirt of the `vent and terminate below within side, all of saidlines being fastened'to _the lower
` 55 the convenient reach of the jumper. By means skirt of .the canopy and at least'some of said -55
' lines are 'moveably connected with the vertex'oi.'
2,119,188
lines passing freely through said guiding ele
men
.
A
and the other end hanging within reach of the
parachutist.
3.«A parachute comprising in combination a
canopy having at least one air vent, guiding ele
ments attached to the skirt of at least one of said
air vents, and a plurality of suspension lines
being displaceably attached to the skirt of at
through said guiding elements.
least one air vent, and at least one pull line for 10
4. A parachute comprising in combination a
canopy having an air vent, eye members at
tached to the skirt of said air vent, and a plu
rality of suspension >lines running from one side
of the canopy over the vertex thereof to the other
side, all of said lines being fastened to the lower
skirt of the canopy and at least some of said
loosely held on the surface of the canopy, one
lines passing freely through'said eye members.
5. A parachute comprising in combination a
canopy having an air vent, tubular guide mem
bers attached to the skirt of said -air vent, and a
plurality of suspension lines running from one
side of the'canopy over the vertex thereof to the
25 other side, all of said lines being fastened to the
lower skirt of the canopy and at least some of
said lines passing freely through said tubular
guide members.
_
'
6. A parachute comprising in combination a
30 canopy having at least one air vent, and a plu
rality of suspension lines running from one side
of the canopy over the vertex thereof to the
other side, all of said lines being fastened to the
lower skirt of the canopy, whilst some of said
35 lines are displaceably attached, and the rest se‘
curely attached, to the skirt of at least- one air
vent.
'
7. A parachute comprising in combination a
canopy having at least one air vent, and a plu
rality of suspension lines running from one side
of the canopy over the vertex thereof to the
‘ other side, all of said lines being fastened to the
lower skirt of the canopy, whilst some of said lines
are displaceably attached to the skirt of at least
one air vent and others are securely attached to
the surface of said canopy.
'
8. A parachute comprising in combination a
canopy having at least one air vent, a plurality
of suspension lines running from one side of the
50 canopy over the vertex thereof to the other side,
all of said lines being fastened to the lower skirt
of the canopy and at least some of said lines
being displaceably attached to the skirt of at least
one air vent, and at least one pull line for con
55
'
running from one side of the canopy over the
vertex thereof tc the other side, al1 of said lines
being fastened to the lower skirt of the canopy
10 andl at least some of said lines passing freely
20
v
9. A parachute comprising in combination a
canopy having at least one air vent, a plurality
of suspension lines running from one side of the 5
canopy over the vertex thereof to the other side,
all of said lines being fastened to the lower skirt
trolling the rate and direction of descent loosely
of the canopy and at least some of said lines
controlling the rate and direction of descent
end of said pull line being attached to the skirt
of at least one air vent, andthe other end hang
ing within reach of the parachutist.
15
10. A parachute comprising in combination a
canopy having at least one air vent, a plurality
of suspension lines running from one side of the
canopy over the vertex thereof to the other side,
all of said lines being fastened to the lower skirt 20
of the canopy. and at least some of said lines
being displaceably attached to the skirt of at
least one air vent, and a meridian seam pocket
on the canopy with a pull line for controlling the
rate and direction of descent accommodated'in
said pocket, one end of said pull line being at
tached to the canopy, and the other end hanging
within reach of the parachutist.
11. A parachute comprising in combination a
canopy having at least one air vent, a pluralityl 30
of suspension lines running from one side of the
canopy over the vertex thereof to the other side,
all of said lines being fastened to the lower skirt
of the canopy and at least some of said lines
being displaceably attached to the skirt of at 35
least one air vent, and a plurality of meridian
seam pockets on the canopy with a plurality of
pull lines for controlling the rate and direction
of descent accommodated in said pockets, said
pull lines being attached to the canopy at one
end and extending to within the reach of the
parachutist at the other'end.
12. A parachute comprising in combination a Y
canopy having at least one air vent, a plurality
of suspension lines running from one side of the
canopy over the vertex thereof to the other side,
all of said lines being fastened to the lower skirt
of the canopy and at least some of said lines being
displaceably attached to the skirt of at least one
air vent, and at least one ,pull line for -con
trolling the rate and direction of descent loosely
held on the surface of the canopy, one end of said
pull line being attached to the canopy in the
proximity of a skirt of an air outlet opening, and
the other end hanging within reach of the para
held on the surface of the canopy, one end of said. chutist.
pull line being directly attached to the canopy `, ,
.
GERHARD SEDLMAYR.
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