U.S. patent number 3,796,987 [Application Number 05/261,495] was granted by the patent office on 1974-03-12 for electrical receptacle and connector.
This patent grant is currently assigned to AMP Incorporated. Invention is credited to John Carl Asick, Robert John Kinkaid.
United States Patent |
3,796,987 |
Kinkaid , et al. |
March 12, 1974 |
ELECTRICAL RECEPTACLE AND CONNECTOR
Abstract
The present invention relates to a self-locking receptacle type
electrical contact as well as to a protective electrically
insulating connector housing for such contact. A salient feature of
the present invention is that the electrical contact is
self-locking when received over a post-type electrical contact.
Another salient feature of the invention is that the protective
housing may be manually displaced with respect to the receptacle
type contact for positively unlocking the contact from the
post-type contact, allowing withdrawal of the receptacle type
contact therefrom.
Inventors: |
Kinkaid; Robert John (New
Cumberland, PA), Asick; John Carl (Harrisburg, PA) |
Assignee: |
AMP Incorporated (Harrisburg,
PA)
|
Family
ID: |
22993557 |
Appl.
No.: |
05/261,495 |
Filed: |
June 9, 1972 |
Current U.S.
Class: |
439/748; 439/847;
439/266 |
Current CPC
Class: |
H01R
13/20 (20130101); H01R 13/432 (20130101) |
Current International
Class: |
H01R
13/02 (20060101); H01R 13/20 (20060101); H01R
13/428 (20060101); H01R 13/432 (20060101); H01r
009/08 () |
Field of
Search: |
;339/262R,262P,256R,258R,258S,259,255R,95R,95D,223,242,217R,217S |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Champion; Marvin A.
Assistant Examiner: Hafer; Robert A.
Attorney, Agent or Firm: Kita, Esq.; Gerald K.
Claims
1. In the combination of an electrically insulating housing and an
electrically conducting contact retained in said housing and
adapted for receipt over an electrically conducting post, the
improvement comprising:
a receptacle of electrically conducting material adapted to receive
an electrically conducting post therein,
a first spring means on said receptacle resiliently biasing said
electrically conducting posts against one side of said
receptacle,
second spring means having a latching portion bitingly engaged on
said post,
said second spring means being capable of resilient deflection to a
second position for disengaging said latching portion from said
post,
said first spring means upon resilient deflection of said second
spring means continuing to bias said post against said one side of
said receptacle in a direction generally away from said latching
portion, thereby allowing removal of said receptacle from said post
without further biting engagement of said latching portion on said
post,
said housing having an apertured portion allowing passage
therethrough of said post for receipt of said post in said
receptacle, and
said housing being relatively movable with respect to said
receptacle for forcibly engaging said housing on said second spring
means and for resiliently deflecting said second spring means to
said second position.
2. A connector for removable latching engagement over a male
electrical terminal, comprising:
a housing having a cavity therein for removably receiving a male
terminal,
an electrically conductive receptacle in the cavity of said
housing,
the receptacle having an open end for removably receiving a male
terminal therein,
the receptacle having a resilient spring tab defining a narrow
throat area internally of said receptacle for engagement upon a
male terminal removably receivable in said receptacle,
the receptacle having a resilient leaf spring overlying the open
end of said receptacle,
the leaf spring having an aperture therein capable of receiving
therethrough a male electrical terminal,
said leaf spring having a chamfered edge adjacent the aperture
thereof, with the chamfered edge capable of being resiliently urged
by said resilient leaf spring into latching and biting engagement
on a male electrical terminal receivable in the receptacle and
through said aperture of the leaf spring, and
said housing being movable relative to said receptacle and into
engagement against said leaf spring, to resiliently deflect said
leaf spring and disengage the chamfered edge thereof from a male
electrical terminal removably receivable in said receptacle and to
permit removal of a male electrical terminal from said receptacle
and said housing without further biting engagement of said
chamfered edge against a male electrical
3. The structure as recited in claim 2, wherein,
said housing includes a first shoulder portion and an inclined
inner wall, said receptacle includes a protruding portion thereof
disposed between said first shoulder and said inclined inner wall
for limiting relative movement of said housing with respect to said
receptacle, said inclined inner wall being movable into engagement
on said leaf spring, upon said relative movement of said housing,
to resiliently deflect said leaf spring and thereby disengage the
chamfered edge of said leaf spring from said
4. The structure as recited in claim 2, wherein, said leaf spring
initially is in spaced relationship from said open end of said
receptacle,
said leaf spring is capable of partial resilient deflection toward
the open end of said receptacle to allow the leaf spring to
resiliently urge the chamfered edge thereof into biting engagement
on a male electrical terminal receivable in the open end of said
receptacle, and
said leaf spring being capable of resilient deflection further
beyond said partial resilient deflection, upon said relative
movement of said housing into engagement against said leaf spring,
to disengage said leaf spring
5. A connector capable of removable latching engagement on a male
electrical terminal, comprising:
a housing of dielectric material,
an electrically conducting receptacle in the housing adapted for
receipt over a male electrical terminal, the receptacle having an
apertured leaf spring receiving therethrough a male electrical
terminal for resilient latching engagement of the leaf spring on
the male terminal, said housing being relatively movable with
respect to the receptacle for engagement of said housing against
the leaf spring to deflect the leaf spring and to disengage the
leaf spring from the male electrical terminal, permitting removal
of the receptacle and the housing from the male electrical
6. The structure as recited in claim 5, wherein,
said receptacle includes a body portion of channel configuration
provided with an integral spring tab and further provided with an
open end,
said leaf spring overlies one side of the channel configuration
body portion,
an end portion of the leaf spring overlying the open end of the
channel configuration body portion,
a portion of said spring tab protruding into the channel
configuration body portion to define a reduced throat area and the
spring tab resiliently engageable upon a male terminal receivable
in the open end of the channel configuration body portion,
an end of said leaf spring having a chamfered edge adjacent the
apertured portion thereof for resilient latching engagement on a
male electrical terminal receivable in the open end of the channel
configuration body portion,
the end of said leaf spring being in spaced relationship from said
open end of said channel configuration body portion and capable of
being resiliently deflected toward the open end configuration of
said channel configuration body portion to disengage the chamfered
edge of the apertured portion from the male electrical
terminal,
said spring tab being maintainable in protruding relationship
within the channel configuration body portion to bias the male
electrical terminal into said reduced throat area and away from the
chamfered edge of the apertured portion, permitting withdrawal of
the male electrical terminal from the receptacle without undesired
engagement of the male electrical
7. The structure as recited in claim 6, wherein,
said housing includes an internal wall portion adjacent the end of
said leaf spring,
the housing being movable relative to said receptacle for engaging
the internal wall portion against the end of said leaf spring and
for deflecting the leaf spring toward the open end of said channel
configuration body portion.
Description
The present invention relates to a self-locking receptacle type
electrical contact as well as to a protective electrically
insulating connector housing for such contact. A salient feature of
the present invention is that the electrical contact is
self-locking when received over a post-type electrical contact.
Another salient feature of the invention is that the protective
housing may be manually displaced with respect to the receptacle
type contact for positively unlocking the contact from the
post-type contact, allowing withdrawal of the receptacle type
contact therefrom.
By way of example only, the present invention is particularly
suited for making plug-in and pull-out electrical connections to
terminal posts mounted on a panel board. Such a use is particularly
described in U.S. Pat. No. 3,186,076, the patent describing a
typical panel board as having a plurality of terminal posts mounted
in a prearranged pattern relatively close to one another. Such
posts are selectively interconnected by wire lengths electrically
and mechanically secured to selected terminal posts by wire
wrapping connections or clip-type terminations. The primary
function of the post-type terminals is to provide locations for
permanent electrical connections of the wires thereto. However, it
is often desirable to provide temporary or otherwise removable
electrical connections at the same locations. For example, it is
often desirable to connect electrical testing equipment directly to
such locations defined by the terminal posts in order to check
electrical continuity at such locations. Also it is desirable to
utilize the post-type terminals for plugging in other electrical
equipment which is to be associated with the panel board. The
receptacle contact according to the present invention is readily
adaptable for such temporary or plug-in electrical connections
directly to the terminal posts. More specifically, any desired
number of receptacle contacts according to the present invention
may be arranged in a connector housing according to the
pre-arranged pattern of the panel board terminal posts. The
selected receptacle contacts may then be simultaneously plugged
into the panel board by receiving corresponding terminal posts
therein. The receptacle contacts are self-locking onto the
corresponding terminal posts to prevent their inadvertent removal
therefrom. However, when it is desired to remove the receptacle
contacts, the connector housing may be manually pulled by an
operator, causing the housing to forcibly unlock each of the
receptacle contacts from the corresponding posts. Accordingly, the
present invention is especially suited for making self-locking, but
readily removable plug-in type interconnections to terminal posts
which are generally elongated and of generally constant cross
section.
By way of another example, the present invention is well suited for
making electrical connections to post-type terminals. In the prior
art, electrical wires are terminated to post-type terminals which
are fixedly mounted in plastic connector housing. Typically the
posts are designed for plug-in insertion within corresponding
receptacle type contacts contained within a mating plastic
connector housing. The post terminals may be designed with cross
sections either square, rectangular or of conic section. However,
the posts must be provided with smooth external surfaces in order
to reduce the amount of friction which would resist insertion of
the posts within the receptacle type contacts. The smooth surfaces
provide however a disadvantage. It is very difficult for the
receptacle contacts to latch or lock onto the smooth surfaced
terminals. Thus, it has heretofore been difficult to design
self-locking receptacle contacts for receiving and latching to
smooth surfaced pin terminals. Accordingly, the mating connector
housings had to be specially designed with mating latching
mechanisms to prevent inadvertent unplugging of the receptacle type
contacts from the pin terminals. Another problem associated with
plug-in type interconnections is that if self-locking receptacle
contacts were to be designed, it would be difficult to unplug the
posts from the locked receptacle contacts, when only a temporary
interconnection was desired. The present invention accordingly
relates to a receptacle type contact which may be received with a
low insertion force over a post-type terminal, the receptacle type
contact being self-locking but readily unlocked from the post type
terminal for removal from the pin terminal.
It is therefore an object of the present invention to provide an
electrical receptacle type contact which is pluggable with a
relatively low insertion force over a post type terminal, which is
self-locking to the post type terminal and which is readily
unlocked for disengagement from the post type terminal.
Another object of the present invention is to provide a
self-locking receptacle type contact in comination with a
protective insulating housing wherein slidable displacement of the
housing over the contact positively unlocks and allows removal of
the contact from an elongated post type terminal.
Other objects and many attendant advantages of the present
invention will become apparent upon perusal of the following
detailed description taken in conjunction with the accompanying
drawings, wherein:
FIG. 1 is an enlarged fragmentary perspective of a preferred
embodiment of a contact according to the present invention with
parts illustrated in exploded configuration to illustrate the
details thereof;
FIG. 2 is an enlarged elevation of the preferred embodiment
illustrated in FIG. 1 with parts partially broken away and with
parts illustrated in section to illustrate the details thereof;
FIG. 2a is an enlarged elevation in section illustrating the
details of a portion of the preferred embodiment illustrated in
FIG. 2;
FIG. 3 is an enlarged fragmentary elevation in section illustrating
the preferred embodiment of the contact illustrated in FIG. 1
together with a protective insulation housing therefor;
FIG. 4 is an enlarged fragmentary elevation in section illustrating
the preferred embodiment as shown in FIG. 3 and further showing a
locking feature according to the present invention;
FIG. 5 is an enlarged fragmentary elevation of the preferred
embodiment illustrated in FIG. 3 and further illustrating operation
of the unlocking feature of the present invention;
FIG. 6 is an enlarged fragmentary section taken along the line 6--6
of FIG. 4; and
FIG. 7 is an enlarged fragmentary section taken along the line 7--7
of FIG. 5.
With more particular reference to FIG. 1 of the drawings, there is
illustrated generally at 1 a preferred embodiment of a receptacle
type electrical contact according to the present invention. The
contact is similar in some respects to that contained in U.S. Pat.
application Ser. No. 982,742, filed Nov. 25, 1970. More
specifically, the contact 1 includes a generally channel shaped
portion 2, a transition portion 4 and a wire barrel portion 6. As
shown with reference to FIGS. 1 and 2, the terminal is of low
profile with the component parts 2, 4 and 6 being generally in
alignment rather than of offset configuration as in the contact of
the copending application. A multi-strand electrical conductor 8
partially protrudes from its encircling insulation covering 10 and
is received generally internally of the channel shaped transition
portion 4. The transition portion 4 includes a pair of integral
ears 12 which are generally curled over and crimped into mechanical
and electrical contact over the strands of the conductor 8. In such
fashion the conductor 8 is electrically and mechanically connected
to the receptacle type contact 1. To provide an insulation support,
the wire barrel portion 6 is crimped into mechanical encircling
engagement on the insulation layer 10 of the conductor. Disposed
generally between the contact portions 4 and 6 are a pair of
generally rectangular ears 14 which protrude and extend generally
laterally of the contact longitudinal axis generally indicated at
16, which, as shown in FIG. 2, generally bisects vertically the
receptacle portion 2 of the contact 1. As shown with reference to
FIGS. 1 and 2, the receptacle portion 2 is generally of elongated
channel shape defined by a pair of spaced parallel sidewall
portions 18 which are generally rectangular in configuration and
which are integral with a connecting bottom wall or base portion
22. A tang or first resilient spring tab 24 is struck out, for
example by a stamping operation, from the bottom wall 22. As shown
in FIG. 2, the spring 24 includes a medial portion 26 thereof
formed so as to protrude into the interior of the channel shaped
receptacle 2 in order to define a reduced throat area internally of
the receptacle 2 and located generally offset in a direction
laterally of the longitudinal axis 16 of the channel portion 2. In
addition, the terminal end 28 of the spring 24 is formed so as to
protrude externally of the base 22 for a purpose to be described
hereinafter. With further reference to FIGS. 1 and 2, the channel
portion 2 is made into an enclosed receptacle by the provision of a
second spring generally indicated at 30. As shown the spring 30
includes a substantially planar medial portion 32 supported on each
of the sidewalls 18 and 20. The medial portion 32 forms one of the
sides of the enclosed configuration receptacle and also forms one
of the sides defining the laterally offset restricted throat area
27. The medial portion 32 is secured on the channel shaped portion
2 by a pair of ears 34, each of which is integral with a
corresponding sidewall 18 or 20 and which is clinched in overlying
relationship on the medial portion 32. An edge margin 36 of the
spring 30 which is adjacent to the medial portion 32 is generally
folded into a flange portion extending at an angle with respect to
the planar medial portion 32. Such folded flange portion serves as
a stiffener for preventing any buckling of the planar medial
portion 32, especially during clinching of the ears 34 and during
the operation of the spring 30 in a manner to be hereinafter
described. Yet with reference to FIGS. 1 and 2, the spring 30
includes another arcuately bent or formed portion 38 immediately
adjacent to the planar medial portion 32. The spring 30 includes a
nose portion 40 which is of generally planar configuration and
which is integral with and generally contiguous with the arcuately
bent portion 38. The nose portion 40 is provided with an elongated
aperture 42 therethrough. The aperture is provided with arcuate
ends 43 as shown in FIG. 1. One of the arcuate ends is adjacent an
elongated tip margin 44 of the nose portion 40. As shown the tip 44
is formed with a dished configuration as shown at 46, the dish
portion 46 intercepting one of the ends 43 of the aperture 42 for a
purpose to be described hereinafter.
Details of the nose configuration will be explained by reference to
FIG. 2a which shows a greatly enlarged cross section of the spring
30. As shown in FIG. 2a, the tip margin 44 is chamfered for example
by swaging to an angle Alpha of about 30.degree. in order to remove
any sharp edges which might interfere with the operation of the
spring 30 in a manner to be described hereinafter. In addition, the
elongated aperture 42 provided in the nose 40 is formed for example
by punching at an angle Beta of about 15.degree. with respect to
the Normal N of the planar nose 40. The dished configuration 46 is
provided by bending a portion of the nose 40 extending between the
aperture 42 and the tip 44, to an angle Gamma of about 29.degree.
with respect to the planar surface of the nose 40. Such dished
portion 46 thus provides, as shown in FIGS. 2a, 6 and 7, a pair of
opposed generally mutually inclined biting edges 48 which appear to
be of converging configuration and forming respective margins
defining the periphery of the elongated aperture 42. The biting
edges 48 are also inclined with respect to the planar nose 40 by
virtue of extending between and interconnecting the dished portions
46 and the nose portion 40. The biting edges 48 are relatively
sharp and appear to have a chamfered configuration because of the
aperture 42 being formed at an angle with respect to the Normal. In
effect, the edges 48 are chamfered to provide cutting edges.
With reference to FIGS. 2 and 3, when the spring 30 is assembled on
the receptacle portion 2, the receptacle portion 2 has a generally
rectangular planar strap portion 50 extending between the sidewalls
18 and 20 and provided with an edge margin 52 bridging between the
sidewalls 18 and 20 and disposed generally under the planar nose
portion 40 of the spring 30. The portion 50 may be fabricated
integral with the receptacle portion 2 in a manner for example
shown by the above referenced U.S. Pat. application Ser. No.
982,742.
By reference to FIG. 3, taken in conjunction with FIGS. 4-7,
utilization of the contact 1 will be described more in detail. As
shown in FIG. 3, there is provided a housing 54 of electrical
insulation material provided at one end 56 thereof with a pair of
generally rectangular elongated cavities 58 each containing therein
a corresponding contact 1. FIG. 3 thus illustrates an exemplary
protective housing of insulation material especially suited for
receiving a pair of contacts according to the present invention. It
should be understood that the housing may be fabricated to accept
only one contact or any number of contacts as desired merely by
repeatedly duplicating the internal cavity structure which will now
be explained in detail. By way of explanation, only one of the
internal cavity structures needs to be explained in detail, since
the other cavity is merely a duplication and further explanation
thereof is unnecessary. With reference to FIG. 3, the exemplary
internal cavity 58 is provided with an internally grooved portion
60 communicating with the housing end 56 providing clearance for
and slidably receiving therein the flanges 14 of the contact 1. In
addition, the internal cavity 58 is internally enlarged as shown at
62 for receiving the wire barrel portion 6 therein. The internal
cavity 58 is provided with a laterally extending relieved portion
or opening 64 into which the spring end tip 28 protrudes. The
relief 64 defines a shoulder 66 against which the spring tip 28
engages. The internal cavity 58 terminates in a bottom wall 68
which is substantially inclined with respect to the sides of the
internal cavity and against which the tip 44 of the nose 40
engages. Immediately adjacent the nose tip 44, the internal cavity
58 is provided with another laterally relieved portion or opening
70 which partially receives the nose tip 44 in a manner to be
explained hereinafter. Another end 72 of the housing is provided
with an opening 74 of reduced cross section and generally in
alignment with an entrance 76 of the receptacle portion 2 which is
positioned generally fixedly internally of the cavity 58. More
specifically, the contact 1 is inserted in the cavity 58. The
spring end 28 will initially be resiliently deflected generally in
a direction internally of the receptacle portion 2 to allow free
passage of the receptacle portion 2 into the cavity 58. When the
nose tip portion 44 bottoms or engages the bottom wall 68, the
spring end 28 will undergo return deflection and will be received
internally of the relieved portion 64 against the shoulder 66. The
receptacle portion 2 will thereby be fixedly retained from
longitudinal motion internally of the cavity 58. As a further
feature, the tip margin 44 when in abutment against the inclined
bottom wall 68 will resiliently deflect the spring portion 40
generally toward the edge margin 52 of the receptacle. This will
insure that the apertured portion 42 of the spring 40 will be
generally in alignment with the entrance 76 of the receptacle and
the aperture 74 of the housing 54. Such action additionally further
maintains the receptacle portion 2 generally in compression
longitudinally and thereby prevents longitudinal motion thereof
when subjected to vibration.
Operation of the present invention will be described with reference
to FIGS. 4-7. As shown in the figures, each of the contacts 1
within the housing 54 receives a post type elongated electrical
contact 78 therein. As shown the contacts 78 are of generally
square cross section but they may be of any desired cross sectional
configuration such as rectangular or of conic section. As shown in
FIG. 4, the housing 54 is readily received over a contact 78, the
contact being received through a corresponding aperture 74 of the
housing. The contact 78 is received through the aperture 42 of the
spring nose portion 40, through the entrance 76 of the receptacle 2
and into the restricted throat area 27 of the receptacle 2. The
spring portion 26 resiliently biases the contact 78 against the
side of the receptacle which is formed by the planar portion 32 of
the spring. Thus the portion 26 of the spring resiliently biases
the contact 78 into the laterally offset restricted throat 27, with
the contact 78 being in electrical contact with the spring 32 and
also the spring portion 26. In addition, the dished portion
disposed at the angle Beta provides an entrance for receiving the
contact. Upon insertion of the contact 78 internally of the
receptacle portion 2, the outer surfaces of the post will drag over
the biting or cutting edges 48, further deflecting the spring
portion 40 against the margin portion 52, allowing the spring 40 to
resiliently buckle about the margin 52 to facilitate entry and
passage of the contact 78 through the apertured portion 42 of the
spring portion 40. Such deflection causes the tip margin 44 to be
resiliently deflected generally away from the bottom wall 68. Once
the contact 78 is fully inserted into the restricted throat area
27, the self-locking feature of the contact 1 will prevent
withdrawal of the contact 78 therefrom. More specifically, since
the spring portion 40 is resiliently deflected upon insertion of
the contact 78, sufficient clearance is provided between the tip
margin 44 and the bottom wall 68 to allow the spring portion 40 to
undergo return resilient deflection, thereby causing the biting
edges 48 to be resiliently biased into biting engagement on the
contact 78, as particularly shown in FIGS. 4 and 6. As is
characteristic of all chamfered cutting edges, the cutting or
biting edges 48 allows the contact 78 to drag freely thereover in
one direction during insertion. However, during motion in an
opposite direction, the biting edges 48 will bite into the contact
78, thereby locking the contact 1 on the contact 78. Also, as shown
in FIG. 4, the return resilient deflection of the spring 40 has a
tendency to bias the contact 78 in a direction generally clockwise
as shown in the figure against the resilient biasing action of the
spring portion 26. However, the spring portion 26 is chosen to be
relatively more stiff in resilient deflection than the spring
portion 40. Thus, the spring portions 26 and 40 cooperate to
resiliently bias the contact 78 against the side of the receptacle
formed by the planar spring portion 32. Accordingly, FIG. 4
illustrates that the apertured spring portion 40 is located
adjacent the entrance 76 of the receptacle to provide a locking or
latching portion initially located adjacent the entrance 76 of said
receptacle to partially restrict the entrance from entry of the
contact 78. The latching portion is however resiliently deflected
as described by the insertion of the contact 78.
As shown in FIG. 5, the unlocking feature of the present invention
will be described in detail. As shown in FIG. 5, the housing 54 is
displaced in a direction generally indicated by the arrow 80 with
respect to the contact or contacts 1 therein. Such displacement may
be caused by an operator grasping the housing 54 and pulling the
housing to displace it in the direction of the arrow 80. Such
displacement forcibly engages the inclined bottom wall 68 against
the tip margin 44, deflecting resiliently the spring portion 40
into engagement against the margin 52. Such displacement is
continued, thereby forcing the spring portion 40 to resiliently
buckle over the margin 52 which acts as a fulcrum. Resilient
deflection of the spring portion without overstressing is assured
since the contact portions 38 and 40 are substantially
unrestricted, thereby allowing, not only a resilient buckling, but
also a pivoting action of the spring portion 40 about the margin
52. The chamfer at the angle Alpha assures that the tip margin 44
slides over and does not bite into the bottom wall 68 during
forcible deflection of the spring portion 40. As shown with
reference to FIGS. 5 and 7, such deflection of the spring portion
40 resiliently biases the biting or cutting edges 48 away from
engagement on the contact 78. Thus, the latching portion of the
contact 1 is displaced from its initial position to a second
position upon the resilient deflection of said spring portion 40.
The latching portion in its second position is relatively removed
from the entrance of the receptacle to allow relatively
unrestricted access to the receptacle entrance as shown in FIG. 7.
Thus, the pulling action exerted by an operator not only unlatches
the contact 1 from its corresponding contact 8 but also allows
removal of the housing and contact 1 from the contact 78. The
latching portion, being removed from the entrance in its second
position is offset from the longitudinal axis of said receptacle.
More specifically, the latching portion in its second position and
the restricted throat area are offset in opposite directions from
the longitudinal axis 16 of the receptacle. This assures that the
contact 78 is positively biased by the relatively stiff spring
portion 26 against the side of the receptacle provided by the
planar spring portion 32 in a direction generally away from the
biting edges 48 defining the latching portion of the spring portion
40. Thus, the spring portion 26, upon resilient deflection of the
spring portion 40, continues to bias the contact 78 against one
side 32 of the receptacle in a direction generally away from the
latching portion in its second position, thereby allowing removal
of said receptacle from the contact 78 without further biting
engagement of the latching portion on the contact 78.
Although a preferred embodiment of the present invention has been
described and illustrated in detail, other embodiments and
modifications of the present invention are intended to be covered
by the spirit and scope of the appended claims, wherein:
* * * * *