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Патент USA US3022494

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Feb. 20, 1962
E. R. THOMPSON, JR
3,022,484
ELECTRICAL CONNECTION ASSEMBLY
Filed Dec. 5, 1958
INVENTOR.
EARL E. THOMPSOM JR.
.W
u
ire; States atentO 5C6.
3,022,484
Patented Feb. 20, 1962
1
2
3,022,484
1 as seen from the outside of the bulkhead to which it
is attached; and
FIGURE 3 is a sectional view of the device of FIG
ELECTRICAL CONNECTION ASSEMBLY
Earl R. Thompson, in, South Bend, Ind, assignor to The
URES l and 2 taken on line 3-3 of FIGURE 2.
In FIGURE 1 my connector is shown attached to a
Wall or bulkhead 10. This connector provides communi
Bendix Corporation, a corporation of Delaware
Filed Dec. 5, 1958, Ser. No. 778,399
3 Claims. (Cl. 339-429)
cation between an electrical assembly (not shown) con
This invention relates to electrical connections of the
axially mating type and more particularly to a design
nected to a plurality of wires 12 and a corresponding
number of connector pins which are adapted to engage a
for a connector adapted to be operative through a bulk 10 mating connector on the Opposite side of wall 10. The
head and having special utility in the ?eld of electrical
wires 12 are assembled in an integral unit with a ?anged
controls for high performance aircraft wherein particu
cylindrical member 14 which is inserted into a hole or
larly high temperature resistance and moisture-proo?ng
port 16 in wall 10. On the opposite side of Wall 10 a
requirements are present.
second flanged cylindrical member 18 is also fastened
In control systems for modern high performance air 15 to wall 10 and has a shoulder 20 which is inserted into
craft, particularly for military service, it is well known
port 16 in axial alignment with the cylindrical portion of
that electrical equipment employed must meet very rigid
speci?cations as to ability to function at high operating
temperatures and as to resistance to penetration by mois
ture. Because of these requirements, it has been found 20
desirable to completely enclose all electrical junctions,
Wherever possible, in an insulating potting compound to
insure that the wiring is kept free from. moisture. Where
?anged member 14. Flanged member 18 includes a
threaded cylindrical portion 22 adapted to receive a
threaded collar 24 from a mating connector 26. Mating
connector 26 includes a plurality of receptacles 28 for
receiving the connecting pins which project into the hol
low interior of ?anged member 22 (see FIGURE 3). _ 7
FIGURE 2 shows an end view of a connector of FIG
URE l as seen from the outside of the wall 10. The
an electrical connection is effected through a port in a.v
wall or bulkhead it has sometimes happened that damage 25 threaded cylindrical portion 22 is shown‘ as isv the ?ange
to either the connector or the electrical assembly requires
that the wires be cut in order to remove the assembly from
18 which contains a plurality of mounting bolts or screws
32 for attaching the member 18 to the bulkhead. Visible
the wall to effect repairs or replacement, thus destroying
in the hollow interior of the threaded portion 22 are a
plurality of connecting pins 34 which are molded in a
the moisture-proof integrity ofthe wiring and requiring
that the assembly be reWired and repotted. Sometimes it
cylindrical insulating member 36. In FIGURE 3 the
electrical connections through the entire assembly are
shown in somewhat greater detail in that the wires 12
has been desired to separate a plate forming part of the
bulkhead to which the connector has been fastened from
the electrical assembly. This also has required cutting
are shown soldered or otherwise fastened to a plurality
of the wires with connectors previously in use. The con
nectors which have been used are a standard “box” type
in which an insulating member is molded in such a way
as to hold a plurality of connecting pins in a desired
of lugs 38 on the top or back side of the connecting pins
34. These pins extend axially through the port 16 and
are held in spaced relation by means of the cylindrical
insulating member 36 which is potted together with
?anged member 14 and the connections with lugs 38 and
the wires 12 to form a unitary moisture-proof assembly.
bolted to the outside of a wall or bulkhead leaving a pro 40 As shown, the connections with lugs 38 are entirely en
jecting threaded cylindrical portion for protecting the con
closed by means of an insulating member 40 consisting
necting pins and for engagement with a mating connector.
of potting compound. The potting compound also extends
Wires are then soldered to the connecting pins on the
into the annular space 42 between members 36 and 14
spaced relationship and said insulating member is held
inside a ?anged cylindrical connecting member which is
inside of the bulkhead and these connections are com
to effect a seal. On the opposite side of wall or bulkhead
pletely enclosed by potting material. With this type of 45 10 the ?anged member 18 is shown connected to wall 10
connector it has been found that the protruding threaded
by means of bolts 32 threadedly engaged with member
members are often damaged in service and this damage
10 through holes drilled therein for this purpose. Flanged
presents the same problem as set forth above where the
connections on the back part of the connector are all en
closed with potting compound and neither the connector '
member 14 is also fastened to member 10 by means of a
plurality of bolts 44 shown in axial alignment with bolts
or screws 32. The seal between members 14 and 18 and
nor the electrical assembly can be pulled through the
the wall or bulkhead 10 is insured by means of a pair of
port. It is, therefore, an object of the present invention
gaskets 46 and 48.
to provide an electrical connector of the type described
From the foregoing, it will be appreciated that a num
in which the electrical connections may be enclosed in
ber of operations may be performed with this type of
55
potting material and the connector may be removed from
connector which would have been very di?icult or impos
the wall or bulkhead to which it is attached without the
sible with other types of connectors. For instance, should
necessity for destroying the moisture-tight integrity of
the threaded ?anged member 18 become damaged in
the wiring.
service, it may be replaced by the simple removal of the
It is another object of the present invention to provide
bolts 32. Should it be decided that the electrical assem
60
an electrical connector of the type described in which the
bly connected to wires 12 must be separated from the
electrical connections may be enclosed in potting material
Wall or bulkhead 10 this may be done by removal of bolts
and the threaded member which protects the connecting
44 which will free the entire assembly consisting of wires
pins may be replaced without the necessity for cutting
12, ?anged member 14, insulating member 36 and pins
wires or otherwise destroying the moisture-tight integrity
65 34 and the enclosing potting material 40 without fear
of the wiring.
of damaging any electrical insulation. A typical installa
Other objects and advantages will become apparent
tion utilizing this type of connector might involve a torque
from the following speci?cation taken in connection with
motor which is positioned within a housing of which
the following drawings in which:
member 10 is a removable part. Should it be desired to
FIGURE 1 is a side view, partly in section, of a con
nector incorporating my invention;
FIGURE 2 is an end view of the connector of FIGURE
70 remove the torque motor assembly and replace it with
another or place it in another housing separate from the
member 10, this can be easily effected as set forth above.
3,922,484.-v
3
4
While only a single embodiment is shown and described
plurality of wires having connections with said pins on
herein, modi?cation may be made to suit the requirements
one end of said insulating member, said connections and
of particular applications.
said insulating member being potted together with said
?anged member to form a unitary, moisture-proof assem
I claim:
‘
'
1. An electrical connector for fastening to a bulkhead
bly; and said second part including a ?anged cylindrical
tember surrounding said pins on the other end of said
insulating member and having threads on the cylindrical
portion thereof for engagement with a mating connector;
devices for attaching said member to one side of said
and fastening means for attaching said ?anged members
bulkhead, a cylindrical insulating member positioned
within the interior of said ?rst ?anged member having a 10 to opposite sides of said bulkhead.
comprising a ?rst ?anged cylindrical member having holes
in the ?ange thereof for receiving a plurality of fastening
plurality of connecting pins positioned in spaced relation
therein and projecting from one end of said member to
receive connecting wires and from the opposite end for
3. An electrical connector adapted to be secured
through a port in a bulkhead including a ?rst part for
fastening to one side of the bulkhead and a second part
for fastening to the other side of said bulkhead; said ?rst
axial engagement with a mating connector, a molded cap
enclosing said one end of said cylindrical insulating mem 15 part including a ?rst ?anged member having a cylindrical
her and the connections between said pins and said wires
in a moisture-proof assembly and also providing a mois
portion extending into said port, a connecting pin posi
tioned within the interior of said cylindrical portion and
an insulating member for spacing said pin from said
ture-proof seal between said ?rst ?anged member and said
?anged member, a wire having a connection with said pin,
cylindrical insulating member, a second ?anged cylindrical
member having holes in the ?ange thereof for receiving 20 said connection, insulating member and ?anged member
a plurality of fastening devices for attaching said second
being potted together to form a unitary sealed assembly;
?anged cylindrical member to the opposite side of said
and said second part including a second ?anged cylindrical
bulkhead in axial alignment with said ?rst ?anged mem
member having a shoulder extending into said port in
her and having threads on the cylindrical portion thereof
axial alignment with said cylindrical portion of said ?rst
for engagement with said mating connector, and sealing 25 ?anged member and having means for engagement with
means positioned between said ?anges and said bulkhead.
a mating connector on the part of its cylindrical portion
2. An electrical connector adapted to be secured
which projects outside of said port.
through a port in a bulkhead including a ?rst part for
fastening to one side of said bulkhead and a second part
for fastening to the other side of said bulkhead; said ?rst 30
part including a ?anwed member having a cylindrical
portion extending into said port, a cylindrical insulating
member carrying a plurality of connecting pins in spaced
relation therein and projecting from each end thereof, a
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,443,654
2,652,445
2,750,436
Else et a1 _____________ __ June 22, 1948
Simpson _____________ __ Sept. 15, 1953
Richter ______________ __ June 12, 1956
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