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Патент USA US3065030

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Nov. 2o, 1962
c. c. DE Paw
CARGO RELEASE PIN ASSEMBLY
Filed March 28, 1960
42
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Patented Nov. 20, i962
3,065,61î
CARGÜ RELEASE PDI ASSEMBLY
Chester C. De Pew, Farmingdale, NSF., assigner, by
mestre assignments, to Aerpat A.G., Glarus, Switzer
land, a corporation of Switzerland
Filed Mar. 28, 196i?, Ser. No. 13,101
7 Claims. (Cl. 287-119)
signed for relatively permanent attachment to a tension
element and is provided with a ilange 13 that may be
' attached to a base by suitable means such as by welding
or bolting. A coupling means is carried on the body
member 1l for releasably engaging another load ele
ment, here shown as an active cable 14 terminated in an
and the like so that the cables can be released without
eye 15 and a V-shaped bracket 16 with the body member
11 passing through an opening 17 in the bracket.
The coupling means carried on the body member 11 for
engaging the bracket 16 is preferably of the detent type,
including a pin 20 carried in the body member for actu
ating the detent. A preferred form of detent is shown
herein and includes a plurality of balls 21 positioned in
requiring manual actuation of each coupling at the time
corresponding lateral openings 22, the balls being mov
This invention relates to tension load couplings and,
in particular, to couplings that can be released auto
matically when desired. The coupling of the invention is
particularly adapted for anchoring cargo cables, lashings,
of release.
It is an object of the invention to provide a tension
coupling that can be locked in the coupled or engaged
position so that it remains coupled regardless of the load
thereon. A further object is to provide such a coupling
that can be changed from a locking condition to a re
leasing condition while under load so that when the load
is relaxed, the coupling will automatically release the
attached cables.
It is an object of the invention to provide a device
for coupling two elements which are loaded in tension,
including first and second body members with first cou
pling means carried on the first body member and en
gageable with one of the elements, second coupling means
carried on one of the body members, a coupling release
member carried by the body members and being main
tained in its locked position by the second coupling means,
means for urging the coupling release member toward its
unlocked position and moving the iirst coupling means
able inwardly and outwardly between an outer extended
position as seen in FIG. 1 and an inner retracted position
as seen in FIG. 2. The outer ends of the openings 22 are
slightly closed as by staking or peening, so as to retain
the balls in the body member. The pin 2i) is movable in
20 the body member between a locked position with a flange
23 of the pin engaging a rolled-over shoulder 24 of' the
body member, as shown in FlG. l, and an unlocked posi
tion with a head 25 of the pin engaging a plate 26 fixed in
the body member lil by a snap ring 27, as shown in FIG.
2. A compression spring 3i) is positioned around the pin
2l) between the tlange 23 and a shoulder 31 of the body
member l1 urging the pin to the left as seen in FIG. l, to
the locked position.
The pin 20 has a peripheral section 32 of larger di
ameter for engaging the detent balls 2l and forcing them
to their outer extended positions as seen in FIG. 1. An
annular groove 33 of lesser diameter is positioned adjacent
the section 32 for permitting the ball detents to move to
to its unlocked position, and means for connecting the
the inner retracted position as seen in FIG. 2.
other loaded element to the second body means so that a 35
Another coupling means is carried on the body mem
tension load on the elements restrains the coupling re
ber 10 for controlling the release member 12, this cou
lease member when in its unlocked position.
pling means also prefer-ably being a detent of the ball
It is an object of the invention to provide a'device for
type. In the preferred formshown herein, a plurality of
coupling two elements loaded in tension having ñrst and
balls 36 are positioned in corresponding lateral openings
second body members with a pin detent, a pin and a pin 40 37, the balls being movable inwardly and outwardly be
spring carried on the iirst body member, a lock detent and
tween an outer extended position, as seen in FIG. 2, and
a lock member carried on one of the body members, and
an inner retracted position as seen in FIG. l. Both the
a release member and a release spring carried between
inner and outer ends of the openings 37 are slightly
the body members, with the lock member when in its
closed, as by staking or peening, to retain the balls in
locking position maintaining the coupling engaged regard
less of the load thereon and when in its releasing position
the body member. A lock member or sleeve 3S is car
ried on the body member lit and is movable between a
permitting the release member to disengage the coupling
locking position forcing the balls 36 to the inner retracted
automatically when the tension load is removed. A fur
position, as seen in FIG. 1, and a releasing position at
ther object is provide such a structure wherein the pin
which the balls 36 are free to move to the outer extended
50 position as seen in FIG. 2. A compression spring 39
detent and the lock detent may be of the ball lock type.
The invention also comprises novel details of con
may be positioned about the body member 10 between
struction and novel combinations and arrangements of
the lock member 33 and a ring 40 lixed to the body
parts, which will more fully appear in the course of the
member by rivets 41, for urging the lock member to the
following description. The drawing merely shows and the
locking position of FIG. l. The lock member 38‘ may
description merely describes preferred embodiments of 55 be moved to'its releasing position from a remote location
the present invention which are given by way of illus
by a line (not shown) attached to a wire loop 42 fixed to
tration or example.
In the drawing:
a band 43 carried on the lock member.
A compression coil spring 46 is positioned between the
FIG. l is a sectional view of a preferred form of the
invention
FIG. 2
shown in
FIG. 3
release member 12 and an inturned shoulder 47 of the
60 body member lil urging the release member to the left
shown in the locked condition;
is a sectional view of the embodiment of FIG. 1
to its unlocked position in engagement with a washer 48
the disengaged condition;
carried on the body member lll, as seen in FIG. 2.
is a sectional view of an alternative form shown
The coupling is shown locked in its engaged condition
in the locked condition; and
in FIG. l. The pin spring 30 holds the pin 20 in its locked
The lock spring 39
holds the lock member in its locking position with the
FIG. 4 is a view similar to that of FiG. 3 shown in the 65 position with the balls 2l extended.
disengaged condition.
rlfhe coupling of FIGS. l and 2 includes body mem
bers 10 and 11 to which the tension loads are applied.
The body member 1l is slidably carried in a coupling
balls 36 retracted inwardly and these balls lock the re
lease member l2 in its locked position against the force
exerted by the release spring 46. While in this state, the
release member 12 which, in turn, is slidable within the 70 coupling will remain engaged regardless of the tension
body member 1t), permitting relative axial movement
load on the body members.
of the two body members. The body member 10 is de
The coupling may be changed to the releasing condition
3,065,011
9
ql)
‘but will remain engaged while sustaining a tension load.
This is accomplished by moving the lock member 38 to
the right to its releasing position, permitting the detent
balls 36 to be moved outward >by the release member 12
upon movement thereof by the spring 46. When the
detent balls move outward, the release spring 46 moves
the release member 12 to the left to its unlocked position.
The release member 12 will now be engaging the washer
48 and urging the body member 11 to the left.
How
ever, the tension exerted on the coupling by the loads ap
plied to the body members will maintain the body mem
bers in the position of FIG. 1 against the force exerted
by the spring 46'. Then when the tension load is reduced
to a magnitude less than the force exerted by the spring
46, this spring will move the release member 12, the body
member 11 and the pin 20 to the left relative to the
body member 10 to the position shown in FIG. 2. En
gagement of the pin 20' with the plate 26 compresses
the pin spring 30, moving the pin relative to the body
d.
head 73 of the pin `64, compressing the pin spring and
permitting the detent balls '63 to move inward and re
lease the body 51 from the member to which it was
previously attached. In this embodiment, the body mem
ber 50 also functions as the release member (12 in FIGS.
l and 2), with the ñange 72 serving as the release unit.
The coupling is engaged by compressing the spring 65,
permitting the body member 51 to be inserted into a
load element. Then the spring 71 is compressed, permit
ting the spring `68 to move the lock member 53 to the
locking position.
'
Although exemplary embodiments of the invention have
been disclosed and discussed, it will be understood that
other applications of the invention are possible and that
the embodiment disclosed may be subjected to various
changes, modifications and substitutions without neces
sarily departing from the spirit of the invention.
I claim as my invention:
l. In a device Yfor coupling two elements loaded in
member 11 so that the balls 21 are free to move to their
tension, the combination of: iirst and second body mem
bers disposed for relative axial movement; a pin detentv
is seen that the coupling can be maintained engaged re
carried adjacent one end of said tirst body member and
gardless of the load thereon and, alternatively, can be
movable inwardly and outwardly between inner retracted?
changed to a releasing condition so that it remains en
and outer extended positions, said pin detentv projecting
gaged only as long as a tension load is applied thereto.
25 laterally from said first body member when in said ex-l
The coupling is engaged by positioning the bracket 16
tended position; a pin movable in said iirst body memberVV
on the body member 11 and then compressing the spring
between locked and unlocked positions and having means
46 to move the release member 12 to the right and to a
thereon for moving said pin detent outwardly into its ex-A
retracted position and release the bracket 16.
Thus, it
position where the detent balls 36 are free to move to
tended position in locking engagement with one of theA
their inner positions. An annular groove 49 may be pro 30 elements when said pin is in said locked position; a pin>
vided in the release member 12 for gripping the release
spring engaging said pin and said lirst body member and
member to compress the spring 46. A simplified form
urging said pin toward said locked position; a lock de-of the coupling may be produced when the coupling is
tent carried on one of said body members and- movableto be used only one time. The release member 12 may
inwardly and outwardly between inner retracted and outer'
be terminated within the body member 10, and the cou 85 extended positions; a lock member carried on said onef
pling is assembled with the release member 12 in its
body member and movable between locking and releas«~
locked position and with the lock member 38 in its lock
ing positions and having means thereon for moving saidî
ing position.
Y
lock detent inward to its retracted position when said
The alternative form of the invention shown in FIGS.
lock member is in its locking position; a release member
3 and 4 is similar to that of FIGS. l and 2 and includes 40 carried by said one body member and movable betweenbody members, 50, 51 and a lock member 53. A sepa
locked and unlocked positions and having means thereon
rate release member is not required. The body member
for moving said lock detent outwardly into its extended
51 includes sleeves 54, 55 fixed thereto by pins S6, 57
position when said release member is in its unlocked position; a release spring engaging said release member and
slidably positioned in the sleeve 55 of the body mem 4-5 said one body member and urging said release member
ber 51 and includes a threaded section 60 vfor receiving
toward its unlocked position; and means for connecting
a clevis 61 and lock nut 62 to which a tension load may
the other element to said second body member. with said
-be connected.
release spring, when said lock member is moved to its
A quick release coupling of the detent type may be
releasing position, moving said release member to its un
carried in the body member 51, including detent balls 6'3, 50 locked position to maintain said lock detent in its ex
a pin 64 and a pin spring 65. Another coupling includ
tended position, and then, when the tension load on the
ing detent balls 66 may be carried in the sleeve 55 of the
elements is relaxed, moving said second body member
body member 51. The lock member S3 is slidable be
and said pin into engagement to compress said pin spring,
tween a locking position which maintains the balls 66 in
their inward position, as seen in FIG. 3, and a releasing 55 move said pin to its unlocked position and release the one.`
to form a unitary structure.
The body member 50 is
position at which the balls r66 are free to move outward
into an annular groove 67, as seen in FIG. 4. A lock
spring 68 may be provided between a shoulder on the
element.
2. In a device for coupling two elements loaded in ten->
sion, the combination of: first and second body members
telescopingly disposed for relative axial movement; a pin
lock mem-ber 53 and the body member 51 for urging the
lock member 53 to the locking position. A release spring 60 detent carried adjacent one end of said ñrst body memberand movable inwardly and outwardly between inner re
71 is positioned about the body member `50 between a
tracted and outer extended positions, said pin detent pro-~
flange 72 and the body member 51 for urging the body
jecting laterally from said iirst body member when in saidmember 50 toward the unlocked position.
extended position; a piny movable in said ñrst body memberThe operation of the coupling of FIGS. 3 and 4 is
between locked and unlocked positions and having means
similar to that of FIGS. 1 and 2. With the lock member
thereon for moving said pin detent outwardly into its ex
53 in the locking position of FIG. 3, the body member
tended position in locking engagement with one of the ele
50 is maintained in its locked position, at which the pin
ments when said pin is in said locked position; a pin spring
spring 65 operates to maintain the pin 6'4 and the balls
engaging said pin and said first body member and urging
63 in the locked position regardless of -the tension load
on the coupling. When the lock member ‘53 is moved to 70 said pin toward said locked position; a lock detent carried
the releasing position of FIG. 4, the detent balls 66' are
on said second body member and movable inwardly and
free to be moved to their extended positions by the ñange
outwardly between inner retracted and outer extended po
72 under the influence of the spring 71. Then when the
sitions; a lock sleeve carried on said second body member
tension load on the coupling is reduced, the spring 71
and movable between locking and releasing positions and
moves the body member 50 into engagement with the 75 having means thereon for moving said lock detent inward
3,055,011
6,
to its retracted position when said lock sleeve is in its lock
ing position; a lock spring engaging said lock sleeve and
said second body member and urging said lock sleeve t0
ward its locking position; a release sleeve carried between
said body members and movable between locked and un
locked positions and having means thereon for moving said
lock detent outwardly into its extended position when said
release sleeve is in its unlocked position; a release spring
engaging said release sleeve and said second body member
and urging said release sleeve toward its unlocked posi
tion; and means for connecting the other element to said
second body member, with said release spring, when said
lock sleeve is moved to its releasing position, moving said
release sleeve to its unlocked position to maintain said lock
detent in its extended position, and then, when the tension
load on the elements is relaxed, moving said second body
member and said pin into engagement to compress said
pin spring, move said pin to its unlocked position and
release the one element.
3. In a device for coupling two elements loaded in ten
in said extended position; a lock sleeve carried on said
second body member and movable between locking and
releasing positions and having means thereon for moving
said lock detent inward to its retracted position when said
lock sleeve is in its locking position; a lock spring engaging
said lock sleeve and said second body member and urging
said lock sleeve toward its locking position; a release
sleeve telescopingly positioned between said body mem
bers and movable between locked and unlocked positions
and having means thereon for moving said lock detent
outwardly into its extended position when sa-id release
sleeve is in its unlocked position; a release spring engaging
said release sleeve and said second body member and
urging said release sleeve toward its unlocked position and
into engagement with said first body member; and means
for connecting the other element to said second body
member, with said release spring, when said lock sleeve
is moved to its releasing position, moving said release
sleeve to its unlocked position to maintain said lock detent
in its extended position, and then, when the tens-ion load
on the elements is relaxed, moving said release sleeve and
said first body member to engage said pin with said second
sion, the combination of: first and second body members
telescopingly disposed for relative axial movement; a pin
detent carried adjacent one end of said iirst body member
body member, to compress said pin spring and release
and movable inwardly and outwardly between inner re
the one element.
tracted and outer extended positions, said pin detent pro
5. In a device for coupling two elements loaded in ten
jecting laterally from said first body member when in said
sion, the combination of: first and second body members
extended position; a pin movable in said first body mem
telescopingly disposed for relative axial movement; a pin
ber between locked and unlocked positions and having
detent carried adjacent one end of said first body member
means thereon for moving said pin detent outwardly into
and movable inwardly and outwardly between inner re
30
its extended position in locking engagement with one of
tracted and outer extended positions, said pin detent pro
the elements when said pin is in said locked position; a
jecting laterally from said ñrst body member when in said
pin spring engaging said pin and said first body member
extended position; a pin movable in said first body mem
and urging said pin toward said locked position; a lock
ber between locked and unlocked positions and having
detent carried on said first body member and movable
means thereon for moving said pin detent outwardly into
inwardly and outwardly between inner retracted and outer
its extended position in locking engagement with one of
extended positions; a lock sleeve carried on said first body
the elements when said pin is in said locked position; a pin
member and movable between locking and releasing posi
spring engaging said pin and said iirst body member and
tions and having means thereon for moving said lock
urging said pin toward said locked position; a lock detent
detent inward to its retracted position when said lock
carried on said first body member and movable inwardly
sleeve is in its locking position; a lock spring engaging said 40 and outwardly between inner retracted and outer extended
lock sleeve and said iirst body member and urging said
positions, said lock detent projecting laterally from said
lock sleeve toward its locking position, said second body
ñrst body member when in said extended position; a lock
member including a rele-ase ñange, with said second body
sleeve carried on said first body member and movable
member movable between locked and unlocked positions 45 between locking and releasing positions and having means
for moving said lock detent outwardly into its extended
thereon for moving said lock detent inward to its retracted
position when said lock sleeve is in its releasing position;
position when said lock sleeve is in its locking position;
a release spring engaging said release tiange and said first
a lock spring engaging said lock sleeve and said first body
body member and urging said second body member toward
member and urging said lock sleeve toward its locking
its unlocked position; and means for connecting the other
position, said second body mem-ber having a release
element to said second body member, with said release
flange, with said second body member movable between
spring, when said lock sleeve is moved to its releasing posi
locked and unlocked positions for moving said lock detent
tion, urging said second body member to its unlocked
outwardly into its extended position when said lock sleeve
position and when the tension load on the elements is
is in its releasing position; a release spring engaging said
relaxed, moving said second body member and said pin 55 release flange and said ñrst body member and urging said
into engagement to compress said pin spring, move said
second body member toward its unlocked posi-tion; and
pin to its unlocked position and release the one element.
4. In a device for coupling two elements loaded in
tension, the combination of: iirst and second body mem
means for connecting the other element to said second
body member, with said release spring, when said lock
sleeve is moved to its releasing position, urging said second
bers telescopingly disposed for relative axial movement; 60 body mem-ber to its unlocked position and when the ten
a pin detent carried adjacent one end of said first body
sion load on the elements is relaxed, moving said second
member and movable inwardly and outwardly between
body member to engage said pin, compress said pin spr-ing,
inner retracted and outer extended positions, said pin
and release the one element.
detent projecting laterally from said first body member
6. In a device for coupling two elements loaded in
when in said extended position; a pin movable in said 65 tension, the combination of: iirst and second body mem
tirst body member between locked and unlocked posi
bers disposed for relative axial movement; a pin detent
tions and having means thereon for moving said pin detent
carried adjacent one end of said first body member and
outwardly into its extended position in locking engage
movable inwardly and outwardly between inner retracted
ment with one of the elements when said pin is in said
and outer extended positions, said pin detent projecting
locked position; a pin spring engaging said pin and said 70 laterally from said tirst body member when in said ex
iirst body member and urging said pin toward said locked
tended position; a pin movable in said iirst body member
position; a lock detent carried on said second body mem
between locked and unlocked positions and having means
ber and movable inwardly and outwardly between inner
thereon for moving said pin detent outwardly into its
retracted and outer- extended positions, said lock detent
extended position in lock-ing engagement with one of the
projecting laterally from said second body member when 75 elements when said pin is in said locked position; a pin
3,085,011
7
spring engaging said pin and said first body member and
8
carried adjacent one endA of said first body member, with
urging said pin toward said locked posit-ion; a lock detent
said first coupling means movable in said first body mem~
carried on one of said body members and movable in~
ber between locked and unlocked positions and being
engageable with one of the elements in load carrying
relation when in said locked position; second coupling
wardly and outwardly between inner retracted and outer
extended positions; a lock member carried on said one
body member and movable between locking and releasing
positions and having means thereon for moving said lock
detent inward to its retracted position when said lock
means carried on one of said body members, with said
second coupling means movable between locking and
releasing position; a coupling release member carried by
«said body members and movable between locked and
members including a release unit movable between locked 10 unlocked positions, with Said second coupling means in its
and unlocked positions and having means thereon for mov
locking position maintaining said coupling release -'mem
ing said lock detent outwardly into its extended posit-ion
ber in its locked position; means for urging said coupling
when said release unit is in its unlocked position; a release
release member toward its unlocked position and urging
spring engaging said release unit and said one body mem
said second body member and said iirst coupling means
ber and urging said release unit toward its unlocked posi 15 into engagement to move said first coupling means to its
tion; and means for connecting the other element to said
unlocked position; and means for connecting the other
second body member, With said release spring, when said
element to said second body member in load carrying rela»
lock member is moved to its releasing position, permitting
tion, with a tension load on the elements restraining said
said release unit to move to its unlocked position, and
coupling release member when in its unlocked position.
when the tension load on the elements is relaxed, moving 20
References Cited in the ñle of this patent
said second body member and said pin into engagement to
compress said pin spring, move said pin to its unlocked
UNITED STATES PATENTS
position and release the one element.
2,562,459
Hoey ________________ __„Iuly 3l, 1951
7. In a device for coupling two elements loaded in ten
De Jean _______________ __ Jan. 3, l955
sion, the combination of: first and second body members 25 2,729,495
2,837,370
Stott et al ______________ __ June 3, 1953
disposed for relative axial movement; ñrst coupling means
member is in its locking position, the other of said body
,Wul
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