Electrical connectors provide signal connections between electronic devices using electrically-conductive contacts, or electrical contacts. In some applications, an electrical connector provides a connectable interface between one or more substrates, e.g., printed circuit boards. The components of such an electrical connector may include a connector housing configured to carry a plurality of electrical contacts and to be mounted to the printed circuit board, and a shroud configured to at least partially enclose the connector housing and/or the electrical contacts, and to be mounted onto the connector housing and to the printed circuit board. Typically, both the connector housing and the shroud have respective mounting members that must be aligned with corresponding mounting apertures on the printed circuit board when the components are mounted onto the printed circuit board. Because each component has mounting members that require alignment, typically mounting the components of the electrical connector requires two separate alignment and mounting procedures.
In accordance with an embodiment, an electrical connector assembly that is configured to be mounted onto an underlying substrate along a mounting direction includes an electrical connector and an electrically conductive shroud. The electrical connector includes a connector housing and at least one electrical contact carried by the connector housing. The shroud can be mounted on the connector housing in a partially mounted position relative to the connector housing, such that the shroud is attached to the connector housing and the connector housing extends further in the mounting direction than the shroud when the shroud is in the partially mounted position. The electrical contact includes at least one mounting tail configured to be mounted to the underlying substrate and a mating end configured to be electrically mated to a complementary electrical component. The connector housing includes at least one first alignment member having an initial thickness along a select direction. The electrically conductive shroud can be configured to fit over the connector housing. The shroud includes a mounting member configured to be received in a complementary aperture of the underlying substrate and at least one second alignment member having an initial thickness along the select direction. When the shroud is mounted onto the connector housing so that the mounting member is aligned with the complementary aperture, one of the first and second alignment members is configured to be received by the other. The received alignment member is compressed by the other alignment member so that the thickness of the received alignment member decreases to be no greater than the thickness of the other alignment member.
In accordance with another embodiment, an electrical connector assembly is configured to be mounted to an underlying substrate along a mounting direction. The electrical connector assembly includes an electrical connector and an electrically conductive shroud. The electrical connector includes a dielectric connector housing and a plurality of electrical contacts carried by the connector housing. The connector housing presents a lower exterior surface that defines a mounting interface configured to be mounted onto the underlying substrate and an upper exterior surface that is opposite the lower exterior surface. Each electrical contact defines a mating end and a mounting tail. Each mounting tail is disposed proximate to the mounting interface and terminates at a location that is spaced from the upper exterior surface a first distance along the mounting direction. The electrically conductive shroud can be configured to be mounted onto the connector housing in a first position relative to the connector housing and a second position that is offset with respect to the first position in the mounting direction. The electrically conductive shroud can include at least one mounting member that is configured to be received in a complementary aperture of the underlying substrate when the shroud is in the second position. When the shroud is mounted onto the connector housing in the first position, the mounting member terminates at a location that is spaced from the upper exterior surface of the connector housing a second distance that is shorter than the first distance. Further, the shroud and the connector housing define a mechanical interference that resists movement of the shroud along the connector housing from the first position to the second position, such that when a force is applied to the shroud that overcomes the mechanical interference, the shroud moves from the first position toward the second position, thereby moving the mounting member toward the complementary aperture.
The foregoing summary, as well as the following detailed description of example embodiments of the application, will be better understood when read in conjunction with the appended drawings. For the purposes of illustrating the staggered mounting electrical connector, there are shown in the drawings example embodiments. It should be understood, however, that the instant application is not limited to the precise arrangements and/or instrumentalities illustrated in the drawings, in which:
For convenience, the same or equivalent elements in the various embodiments illustrated in the drawings have been identified with the same reference numerals. Certain terminology is used in the following description for convenience only and is not limiting. The words “left,” “right,” “front,” “rear,” “upper,” and “lower” designate directions in the drawings to which reference is made. The words “forward,” “forwardly,” “rearward,” “inner,” “inward,” “inwardly,” “outer,” “outward,” “outwardly,” “upward,” “upwardly,” “downward,” and “downwardly” refer to directions toward and away from, respectively, the geometric center of the object referred to and designated parts thereof. The terminology intended to be non-limiting includes the above-listed words, derivatives thereof and words of similar import.
Referring initially to
The electrical connector 102 can include a dielectric or electrically insulative connector housing 112 and a plurality of electrical contacts 118 that are supported by the connector housing 112. When the electrical connector 102 is mounted to the printed circuit board 104 along a mounting direction, the electrical contacts 118 are placed in electrical communication with electrical traces of the printed circuit board 104. The electrically conductive shroud 106 can be configured to fit over the connector housing 112, and translate along the connector housing 112 along the mounting direction, so as to be mounted onto the printed circuit board 104. The electrical connector system 99 can further include a complimentary electrical connector configured to mate with the electrical connector 102 so as to establish an electrical connection between the electrical contacts 118 of the electrical connector 102 and complementary electrical contacts of the complementary electrical connector, and thus also to an electrical component to which the complementary electrical connector is mounted. For instance, the electrical component to which that the complementary electrical connector is mounted can be an underlying substrate such as a printed circuit board or any other suitable electrical device.
In accordance with the illustrated embodiment, the electrical connector 102 can be constructed as a card-edge connector, such as a CXP card-edge connector in accordance with the “Supplement to InfiniBand™ Architecture Specification Volume 2 Release 1.2.1” Annex A6: 120 Gb/s 12× Small Form-factor Pluggable (CXP), Interface Specification for Cables, Active Cables, & Transceivers, InfiniBandSM Trade Association (September 2009), the disclosure of which is incorporated herein by reference in its entirety. It should be appreciated, however, that the electrical connector 102 can be alternatively constructed in any suitable manner as desired.
The electrical connector 102 can be constructed as a right-angle connector that defines a mating interface 114 and a mounting interface 116 that extends substantially perpendicular to the mating interface 114. The mating interface 114 can be configured to mate with a complementary mating interface of a complementary electrical connector that is to be mated to the electrical connector 102. The mounting interface 116 is configured to be mounted onto an underlying substrate, such as the printed circuit board 104. The mating interface 114 can include first and second receptacle pockets 114a and 114b, respectively, wherein the first receptacle pocket 114a can be positioned as an upper receptacle pocket and the second receptacle pocket 114b can be positioned as a lower receptacle pocket.
Referring to
Various structures are described herein as extending horizontally along a longitudinal direction “L” and a lateral direction “A” that is substantially perpendicular to the longitudinal direction L, and vertically along a transverse direction “T” that is substantially perpendicular to the longitudinal and lateral directions L and A, respectively. As illustrated, the transverse direction “T” extends along a vertical direction, and defines a mounting direction M along which one or both of the electrical connector 102 and printed circuit board 104 are moved relative to the other so as to mount the electrical connector assembly 100, including the electrical connector 102 and the shroud 106, to the printed circuit board 104. Similarly, one or both of the connector housing 112 and the shroud 106 can be moved relative to the other along the mounting direction M so as to attach the shroud 106 to the connector housing 112 (see
Thus, unless otherwise specified herein, the terms “lateral,” “longitudinal,” and “transverse” are used to describe the orthogonal directional components of various components. The terms “inboard” and “inner,” and “outboard” and “outer” and like terms when used with respect to a specified directional component are intended to refer to directions along the directional component toward and away from the center of the apparatus being described. Further, the term “in” when used with a specified direction component is intended to refer to the single specified direction, and the term “along” when used with a specified direction component is intended to refer to both directions (i.e., toward and away) of the specified direction component. It should be appreciated that while the longitudinal and lateral directions are illustrated as extending along a horizontal plane, and that while the transverse direction is illustrated as extending along a vertical plane, the planes that encompass the various directions may differ during use, depending, for instance, on the orientation of the various components. Accordingly, the directional terms “vertical” and “horizontal” are used to describe the electrical connector assembly 100 and its components as illustrated merely for the purposes of clarity and convenience, it being appreciated that these orientations may change during use.
Referring now to
Each of the ends 115a-e can be monolithic with each other and with the connector housing 112. Alternatively, various ones of the ends 115a-e, such as the lower and rear ends 115d and 115e, respectively, can be provided as separate components that can be affixed to the connector housing 112, or can be provided as a separate monolithic component that can be affixed to the connector housing 112. The connector housing 112 can further include a contact block 130 positioned at the front end 115a of the housing body 115, such that the contact block 130 carries respective mating ends 122 of the electrical contacts 118. For instance, the contact block 130 can define an interior void 131 that can be bifurcated such that the contact block 130 defines first and second receptacle pockets 114a-b that are spaced from each other along the transverse direction T. Thus, the connector housing 112 can define the first and second receptacle pockets 114a-b.
Still referring to
With continuing reference to
Each electrical contact 118 can further include an intermediate portion 120 that extends between the mating end 122 and the opposed press-fit tail. Each leadframe assembly 126, and thus the respective electrical contacts 118 of each leadframe assembly 126, can be arranged in respective columns C that extend along the transverse direction T, and can be spaced from the other leadframe assemblies 126 along the lateral direction A, which can define a row direction. The columns C can be oriented substantially perpendicular to the upper surface of the printed circuit board 104 to which the electrical connector 102 is mounted.
The electrical contacts 118 can define receptacle type mating ends 122. Because the mating ends 122 of the electrical contacts 118 are configured as receptacle type mating ends, the electrical connector 102 can be referred to as a receptacle connector. Furthermore, because the mating interface 114 is oriented substantially perpendicular to the mounting interface 116, the electrical connector 102 can be referred to as a right angle connector, though it should be appreciated that the electrical connector 102 can alternatively be constructed in accordance with any desired configuration so as to electrically connect an underlying substrate, such as the printed circuit board 104, to a complementary electrical connector. For instance, the electrical connector 102 can alternatively be constructed as a plug or header type connector with electrical contacts 118 having spade, or plug type mating ends configured to be plugged into, or received by complementary receptacle type mating ends of the electrical contacts of a complementary electrical connector that is to be mated to the electrical connector 102. Additionally, the electrical connector 102 can be configured as a vertical connector, whereby the mating interface 114 is oriented substantially parallel with respect to the mounting interface 116.
The mating ends 122 of the electrical contacts 118 extend forward from the respective leadframe housings 128 along a longitudinal direction L that is substantially perpendicular with respect to the transverse direction T. Thus, the electrical connector 102 is configured to be mated with a complementary electrical connector along the longitudinal direction L, which can define a forward insertion or mating direction. The mounting tails 124 of the electrical contacts 118 extend downward from the respective leadframe housings 128 along the transverse direction T. Thus, it can be said that the mating ends 122 extend along a first or mating direction relative to the connector housing 112, while the mounting tails 124 extend along a second or mounting direction M relative to the connector housing 112 that is substantially perpendicular to the first direction.
The leadframe assemblies 126 can be disposed adjacent to one another in the connector housing 112 along a lateral direction A. Thus, the leadframe assemblies 126 can be spaced along a lateral row direction in the electrical connector 102, thereby defining corresponding laterally spaced columns C of electrical contacts 118. The mounting tails 124 of the electrical contacts 118 of each respective leadframe assembly 126 are spaced substantially along the longitudinal direction L and extend downward from the respective leadframe housings 128 along the transverse direction T. The mating ends 122 of each respective leadframe assembly 126 are spaced along the transverse direction T. The electrical connector 102, for instance the leadframe assemblies 126, can include a dielectric material, such as air or plastic, that electrically isolates individual ones of the electrical contacts 118 from one another.
Referring to
The shroud body 111 can further define a receptacle pocket 108 that can be disposed at the front end 106e of the shroud 106. The receptacle pocket can protrude forward in the longitudinal direction with respect to the mating ends 122 of the electrical contacts 118 for instance when the shroud 106 is fully attached to the connector housing 112. The receptacle pocket 108 of the shroud 106 can be configured to receive a complementary mating interface of a complementary electrical connector when mating the complementary connector to the electrical connector 102 so as to align respective mating ends of complementary electrical contacts of the complementary electrical connector with the first and second receptacle pockets 114a-b of the connector housing 112.
The shroud 106 can include at least one, such as a plurality of mounting members 136, that are configured to be received by complementary apertures defined in an underlying substrate, such as the printed circuit board 104. In accordance with the illustrated embodiment, the shroud 106 defines a pair of mounting members 136 in the form of legs 137, each leg 137 extending downward in a transverse direction with respect to the lower end 106d of the shroud 106. Each mounting member 136 can be configured to be received in a respective complementary aperture 138 of the underlying substrate. For instance, the complementary apertures 138 extend at least into the upper surface of the printed circuit board 104. The illustrated mounting members can be oriented along a direction that is substantially perpendicular to the mating direction. Thus, it can be said that the mounting member 136 projects out from the shroud body 111 in the mounting direction M.
Still referring to
Referring to
The shroud 106 can further include at least one, such as a plurality of second alignment members 139. The alignment members 139 of the shroud 106 can include a recess 140 that is supported by the interior surface 117 of the shroud body 111. The alignment members 139 of the shroud 106 can be configured to interface with complementary alignment members of the connector housing 112. The alignment member 139 can include one or more sides that define the recess 140. In accordance with the illustrated embodiment, the shroud 106 includes a pair of second alignment members 139 that include opposed sides 157 and an upper end 159 that define recesses 140 in the interior surface 117 of the shroud body 111. Each recess 140 can be bound by the opposed sides 157, that are spaced from each other along a select direction, which can be the longitudinal direction L, (see also
Referring also to
Each of the first alignment members 132 can include an alignment body 135 and at least one compressible crush rib 152 that projects out from the alignment body 135, for instance along a direction that is perpendicular to the mounting direction M. The alignment members 132 can be configured as ribs 133 in accordance with one embodiment. For instance, each rib 133 can be elongate in the mounting direction M and can protruding out from the exterior surface 113 of the connector housing 112, for instance along the lateral direction A, and in particular from the exterior side surfaces 113c of the sides 115c. Each of the illustrated alignment members 132 extend out from a respective one of the exterior side surfaces 113c of the sides 115c along the lateral direction, and can further extend along the transverse direction T between the upper end 115b and the lower end 115d, for instance from the upper end 115b to the lower end 115d. The alignment body 135, and thus the first alignment member 132, can define a first end or lower end 156 and a second end or upper end 151, the first end (i.e., lower end 156) of the first alignment member 132 can be disposed closer to the underlying substrate than the second end (i.e., upper end 151) of the first alignment member 132 when the electrical connector 102 is mounted onto the underlying substrate (i.e., printed circuit board 104). For instance the lower end 156 can be disposed proximate to the lower end 115d of the housing 112, and the upper end 151 can be disposed proximate to the upper end 115b of the housing 112. The second end or upper end 151 of the first alignment member 132 can be tapered, and can define a leading end with respect to engagement with a complementary alignment member 139 of the shroud 106 as described in more detail below. For instance, the alignment member 132 can include an upper end 151 that has tapered edges 150 so as to allow the alignment member 132 to be easily guided into the complementary alignment members 139 of the shroud 106. Because the alignment members 132 (i.e., ribs 133) can be supported by the exterior surface 113 of the connector housing 112, they can be referred to as exterior alignment members.
Referring again to FIGS. 7 and 9A-D, the alignment body 135 can define an outwardly-facing exterior surface 154, which can include a pair of opposed sides 155 that are spaced from each other, for instance along the select direction which can be the longitudinal direction L, and an outer end 161 that extends between the opposed sides 155 along the longitudinal direction L. The crush rib 152 can project out from the exterior surface 154, for instance from one of the opposed sides 155 along the select direction. As illustrated, the select direction is the longitudinal direction L, though it should be appreciated that the select direction can be the lateral direction A, for instance when the crush rib 152 alternatively extends out from the outer end 161. Each crush rib 152 can be elongated along the mounting direction M from a first end proximate the first end (i.e., lower end 156) of the first alignment member 132 toward an opposed second end proximate a second end (i.e., upper end 151) of the first alignment member 132. Thus, it can be said that the alignment members 132 are oriented in a direction substantially perpendicular to the select direction. Further, it can be said that each of the first alignment members 132 (i.e., ribs 133) of the connector housing 112 have an initial thickness T2 along the select direction, and the initial thickness T2 is defined by the sum of the distance between the opposed sides 155 along the select (i.e., longitudinal) direction and the distance that the crush rib 152 projects from an opposed side 155 along the select direction. Thus, the thickness of an alignment member 132 of the connector housing 112 can be decreased when the crush rib 152 is compressed, so that the alignment member 132 can have a thickness T3 that is less than the initial thickness T2.
The electrical connector 102 is configured to be mounted onto an underlying substrate along a mounting direction M. For instance, the first alignment member 132 (i.e., rib 133) of the connector housing 112 can be configured to be received by the second alignment member 139 (i.e., recess 140) when the shroud 106 is mounted onto the connector housing, so that the mounting member 136 is aligned with the complementary aperture 138, and movement of the shroud 106 along the electrical connector 102 causes the mounting member 136 to be received in the complementary aperture 138 and the first alignment member 132 to be compressed by one of the opposed sides 157 that define the recess 140 (i.e., the second alignment member) so that the thickness T3 of the first alignment member 132 decreases to be no greater than the thickness T1 of the second alignment member 139. For instance, one of the opposed sides 157 of the alignment member 139 can be configured to compress the crush rib 152 as the shroud 106 is fit over the connector housing 112. Alternatively, at least one alignment member of the shroud 106 can be received by at least one corresponding alignment member of the connector housing 112. Thus, it can be said that one of the first and second alignment members can be configured to be received by the other of the first and second alignment members when the shroud 106 is mounted onto the connector housing 112 so that the mounting member 136 is received in the complementary aperture 138, and the received one of the first and second alignment members can be compressed by the other of the first and second alignment members so that the thickness of the received one of the first and second alignment members decreases to be no greater than the thickness of the other of the first and second alignment members. As further described herein, the first alignment member is not limited to including one compressible crush rib 152 projecting outward from one opposed side 155. For instance, the first alignment member 132 can include at least a second compressible crush rib that projects out from the other of the opposed sides 155 along the select direction. Thus, the other opposed side 157 of the alignment member 139 can be configured to compress the second crush rib as the shroud 106 is fit over the connector housing 112.
The alignment members 139 of the shroud 106 can include recesses 140 that can be located, or disposed in the interior surface 117 of the shroud body 111 such that when the alignment members 132 that are supported by the exterior surface 113 of connector housing 112 are received in the recesses 140 as the shroud 106 is mounted onto, or attached to the connector housing 112, the front edge of the upper end 106a of the shroud 106 is substantially aligned with the front edge of the printed circuit board 104 along the transverse direction.
The recesses 140 can be sized to receive the ribs 133 in a press, or friction fit, such that the recesses 140 and the ribs 133, and thus the shroud 106 and the connector housing 112, define a mechanical interference that resists movement of the shroud 106 along the connector housing 112, as described in more detail below. For instance, referring to
The illustrated alignment members 132 (i.e., ribs 133) are located, or disposed at substantially the front edges of the respective sides 115c, proximate the rear end of the contact block 130. The illustrated ribs 133 have a height equal to approximately three quarters of the transverse height of the connector housing 112. The compressible crush ribs 152 can have a height that is substantially equal to the ribs 133. The illustrated crush rib 152 has a height that is substantially equal to the distance between the lower end 156 of the rib 133 and the bottom of the tapered edge 150 along the mounting direction M. It should be appreciated that the connector housing 112 is not limited to the illustrated alignment members, and that the connector housing 112 can alternatively be constructed with any other suitable alignment members, as desired. For instance, the connector housing 112 can alternatively be constructed with more or fewer alignment members, alignment members having the same or different geometries, alignment members disposed at different locations on the exterior surface 113 of the connector housing 112, or any combination thereof. Further, it should be appreciated that the alignment member 132 is not limited to the illustrated crush ribs, and that the alignment member 132 can alternatively be constructed with any suitable crush ribs, as desired. For instance, the alignment member 132 can alternatively be constructed with more or fewer crush ribs, crush ribs having the same or different geometries, crush ribs disposed at various locations on the exterior surface 154 of the alignment member 132, or any combination thereof.
It should further be appreciated that the exterior alignment members of the connector housing 112 need not extend outwardly from the exterior surface 113 of the connector housing 112. For example, the exterior surface 113, such as the exterior side surfaces 113c, can define exterior alignment members in the form of recesses that are recessed in the respective exterior side surfaces 113c. Similarly, the interior alignment members of the shroud 106 need not include recesses 140 that are recessed in the interior surface 117 of the shroud 106. For example, the interior surface, such as the inner surfaces of each of the side walls 106b can define respective interior alignment members in the form of ribs that project out from the respective side walls 106b, in respective directions toward the center of the shroud. It should still further be appreciated that the exterior alignment members of the connector housing 112 and the interior alignment members of the shroud 106 can be defined as any combination of alignment members that are recessed in, or project out from the exterior and interior surfaces of the connector housing 112 and shroud 106, respectively.
Referring now to
In a second step, the shroud 106 can be mounted to the connector housing 112, for instance by aligning first alignment members 132 of the connector housing 112, such as the ribs 133, with complementary second alignment members 139 of the shroud 106 (see
Referring again to
Referring also to
Referring again to
For instance, the second alignment member 139 of the shroud 106 can be configured to mechanically interfere with the first alignment member 132 of the connector housing 112 so as to provide the mechanical interference when the shroud 106 is in the first position. More specifically, the first alignment member 132 can be configured to be received by the second alignment member 139, and the first alignment member can include at least one compressible crush rib 152 that is configured to mechanically interfere with the shroud 106 when the shroud 106 is in the first position. Force can be applied to overcome the mechanical interference and cause the shroud 106 to compress the crush rib 152 such that the second alignment member 139 further receives the first alignment member 132 as the shroud moves from the first position toward the second position.
The shroud 106 and/or the connector housing 112 can be configured to define a mechanical interference when the shroud 106 is attached to the connector housing 112 in the first position, and the mechanical interference can be of sufficient magnitude to resist movement of the shroud 106 from the first position to the second position, that is to retain the shroud 106 in the first position, during mounting of the connector housing 112 to the printed circuit board 104. The mechanical interference can be generated, for instance due to the respective geometries of the first and second alignment members. For example, at least a portion, such as the entirety of the ribs 133 and/or the recesses 140 can be sized and/or shaped such that once the ribs 133 have advanced into the recesses 140 a distance such that the shroud 106 is in the first position relative to the connector housing 112, the magnitude of the force resisting further advancement of the ribs 133 within the recesses 140 (i.e., the mechanical interference) is greater than the force required to cause the mounting tails 124 of the electrical contacts to be inserted into the respective vias 105 of the printed circuit board 104. Referring to
In operation, the shroud 106 can be attached to the connector housing 112 in the first position by placing the shroud over the connector housing so that the alignment member 132 of the connector housing 112 is at least partially received by the alignment member 139 of the shroud 106. With the shroud 106 attached to the connector housing 112 in the first position (see
Because the mounting tails 124 of the electrical contacts 118 can protrude beyond the distal ends of the mounting members 136, the mounting members 136 do not interfere with aligning the mounting tails 124 with the respective vias 105 of the printed circuit board 104. Thus, the mounting tails 124 can be aligned along the mounting direction M with the complementary vias 105 of the underlying substrate while the shroud 106 is in the first position, such that the mounting tails 124 are at least partially received in the complementary vias 105. Because the magnitude of the force required to cause the mounting tails 124 to be inserted into the vias 105 can be less than that required to overcome the mechanical interference between the shroud 106 and the connector housing 112, the connector housing 112 can be mounted to the printed circuit board 104 before the shroud moves from the first position toward the second position along the mounting direction M.
Thus, while the shroud 106 is in the first position the mounting tails 124 can be aligned with the corresponding vias 105 of the printed circuit board without the shroud 106 interfering with a view, for instance a view from a direction that is perpendicular to the mounting direction M, of the mounting tails 124 and the corresponding vias 105. Therefore, the connector housing 112 and shroud 106 can be mounted to the printed circuit board 104 without breaking or bending the mounting tails 124.
Once the mounting tails 124 have been inserted into the vias 105 such that the connector housing 112 is seated in its mounted position against the printed circuit board 104, continued application of force to the shroud 106 along the mounting direction M can build up and reach a magnitude greater than the mechanical interference of the shroud 106 and the connector housing 112, at which point the mechanical interference can be overcome and the shroud 106 can slidably move from the first position (see
Still referring to
It should be appreciated that the electrical connector 102 can be provided with the shroud 106 pre-mounted to the connector housing 112, in the first, or staggered position (See
Although the staggered mounting electrical connector assembly has been described herein with reference to preferred embodiments and/or preferred methods, it should be understood that the words which have been used herein are words of description and illustration, rather than words of limitation, and that the scope of the instant disclosure is not intended to be limited to those particulars, but rather is meant to extend to all structures, methods, and/or uses of the herein described staggered mounting electrical connector. Those skilled in the relevant art, having the benefit of the teachings of this specification, may effect numerous modifications to the staggered mounting electrical connector as described herein, and changes may be made without departing from the scope and spirit of the instant disclosure, for instance as recited in the appended claims.
This application claims the benefit of U.S. Provisional Application No. 61/543,053 filed Oct. 4, 2011, the disclosure of which is hereby incorporated by reference as if set forth in its entirety herein.
Number | Date | Country | |
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61543053 | Oct 2011 | US |