US3848222A - Zero entry connector system - Google Patents

Zero entry connector system Download PDF

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Publication number
US3848222A
US3848222A US00380316A US38031673A US3848222A US 3848222 A US3848222 A US 3848222A US 00380316 A US00380316 A US 00380316A US 38031673 A US38031673 A US 38031673A US 3848222 A US3848222 A US 3848222A
Authority
US
United States
Prior art keywords
connector
cam
low entry
force electrical
electrical connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00380316A
Other languages
English (en)
Inventor
L Lightner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
Original Assignee
AMP Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AMP Inc filed Critical AMP Inc
Priority to US00380316A priority Critical patent/US3848222A/en
Priority to CA203,296A priority patent/CA1030629A/fr
Priority to DE2432328A priority patent/DE2432328C2/de
Priority to AU70938/74A priority patent/AU490465B2/en
Priority to GB3010174A priority patent/GB1472225A/en
Priority to CH940574A priority patent/CH567809A5/xx
Priority to AT567774A priority patent/AT343741B/de
Priority to IT25078/74A priority patent/IT1017096B/it
Priority to BR5729/74A priority patent/BR7405729D0/pt
Priority to NLAANVRAGE7409451,A priority patent/NL175568C/xx
Priority to FR7424568A priority patent/FR2238262B1/fr
Priority to BE146610A priority patent/BE817713A/fr
Priority to ES1974204749U priority patent/ES204749Y/es
Priority to JP8314574A priority patent/JPS5410106B2/ja
Priority to SE7409405A priority patent/SE7409405L/xx
Priority to AR254781A priority patent/AR199629A1/es
Application granted granted Critical
Publication of US3848222A publication Critical patent/US3848222A/en
Priority to HK190/79A priority patent/HK19079A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/193—Means for increasing contact pressure at the end of engagement of coupling part, e.g. zero insertion force or no friction

Definitions

  • ABSTRACT [73] Assignee: AMP Incorpo t d, H i b p
  • a zero entry connector system is disclosed having male and female connectors which require very small [22] July 1973 force for mating.
  • One of the connectors is provided [21] Appl. No: 380,316 with a camming means which acts on the other connector to effect a relative transverse motion therebetween to bring the contacts therein into mating en- [52] Cl 339/75 339/184 M gagement.
  • Each contact of one member is the active [51] Int.] Cl HOlr 13/54 Contact and has the form of a resilient leaf While each [58] he d of Search 339/74 184 contact of the other portion is the passive contact and has the form of a fixed and relatively rigid pin.
  • the [56] References cued male and female connectors are mated in the conven- UNITED STATES PATENTS tional manner but no engagement of the contacts oc- 3,209,302 9/1965 Uberbacher 339/92 M curs until after the connectors have been fully mated 3, 183 2/1 69 Feeser et a]...
  • the present invention relates to a zero entry connec tor system and in particular to a connector system in which a plurality of contacts are engaged by first bringing together male and female members of the system with substantially no force since the contacts are not engaged and then moving the members transversely with respect to one another to bring the respective contacts into full engagement.
  • a further example of a low insertion force connector is the position-and-lock jack disclosed in US. Pat. No. 3,145,067.
  • This jack system includes two portions which can be mated with substantially no insertion force and then cammed relative to each other by camming means 29.
  • this system suffers from the defect that there is a great deal of effort required to properly align the jack portions for final mating as well as the possibility of breaking off the male contact or even effecting improper initial mating since there is no adequate guide for the jack members.
  • U.S. Pat. Nos. 3,315,212 and 3,594,698 disclose connector arrangements in which contacts carried by first and second mating block members are moved relative to one another by means of an intermediate third block which is cammed transversely with respect to the other two block portions. Both of these arrangements are rather complex in nature and have a substantial number of parts which greatly increases the production costs and assembly requirements.
  • the subject zero entry connector system includes a female connector and a male connector receivable therein.
  • One of the connectors is provided with passive contacts and the other connector is provided with active contacts.
  • the passive contacts are rigid pins fixedly mounted in the connector while the active contacts have a resilient blade extending from the connector in cantilever fashion.
  • Cam means are provided on one of the connectors for effecting relative transverse movement between theconnectors. The connectors are initially mated in the normal manner without the contacts engaging. There is substantially no connection force during this initial mating movement. The connectors are then moved transversely with respect to one another by the cam means to bring the contacts into good electrical and mechanical engagement.
  • FIG. 1 is a side elevation, partly in section, of the subject zero entry connector system
  • FIG. 2 is an enlarged fragmentary sectional view showing the subject zero entry connector system mated but not yet latched;
  • FIG. 3 is an enlarged fragmentary sectional view showing the subject zero entry connection system mated and latched;
  • FIG. 4 is a transverse fragmental sectional view taken along line 44 of FIG. 2;
  • FIG. 5 is a transverse sectional view taken along line 5-5 of FIG. 3;
  • FIG. 6 is a perspective view of the cam latch of the present invention.
  • FIG. 7 is a perspective view, on an enlarged scale, of the active or resilient contact of the present invention.
  • the subject zero insertion force connector assembly includes a male or plug connector 10 and a receptacle or a female connector 12.
  • the male or plug connector 10 is an integral member having a substantially rectangular mounting portion 14 surrounding a contact carrying portion 16.
  • the mounting portion 14 has outwardly directed mounting flanges 18 at opposite ends thereof with openings 20 therein for the passage of bolts or other locking means'( not shown) to secure the plug to a panel or the like (also not shown).
  • a profiled cam reactor surface 22 which, in this instance, is formed by a first annular bore 24, a conical counter bore 26 and an intermediate arcuate portion 28 defining an arcuate shoulder 30 between it and bore 24.
  • a rigid connector pin 38 (the passive contact) is fixed in each of the contact bores 34 with its forward end extending into the counter bore 36 but not projecting be yond the mating face 40 of the male connector block. The other end of the pin is connected to an electrical lead (not shown) by any conventional means.
  • the receptacle or female connector 12 includes a contact block 42 having an integral, outwardly directed, annular flange 44 and a strain relief housing 46.
  • the housing is assembled with the block with annular recess 48 in the housing grippingly engaging flange 44. Screws 50 secure the parts of the housing together to hold cable 52 therein.
  • the block 42 includes a forwardly directed hood or annular flange portion 54 which defines a profiled, and preferably polarized, opening into which the contact carrying portion 16 is inserted.
  • a plurality of contact bores 56 are formed in contact block 42 and receive therein a resilient contact 58 (the active contact).
  • the resilient contact includes a resilient blade portion 60 which extends beyond the mating face 62 of the contact block and a connection portion 64 adapted to be fixed to a lead 66 of cable 52 by any conventional means such as crimping.
  • a bead 68 is formed on the free end of blade portion 60.
  • a first bore 70 is formed'towards one end of the contact block 42 with a counter bore 72 in communication therewith. Atleast one resilient latching member 74 extends from an edge of the first bore 70 into the counter bore 72.
  • the latching member 74 includes a latching projection 76 on the free end thereof directed radially inwardly with respect to bore 70.
  • a cam member 78 is mounted in the first bore 70.
  • the cam member 78 includes a first cylindrical portion 80 with a second cylindrical portion 82 integrally connected to one end thereof forming an annular shoulder 84 therebetween.
  • a lever 86 is fixedly connected to the other end of the first cylindrical portion 86.
  • the opposite end of the second cylindrical portion 82 has an ar cuate cam groove 88 formed therein defining a pair of spaced shoulders 90, 92. Shoulder 88 is normally engaged with the projection 76 of latching means 74.
  • the free end of the second cylindrical member has a cam and latching extension 94 formed by a cam surface 96 and a latching projection 98.
  • a first earn stop 100 is integrally formed on housing 46 at a position where it will be engaged by handle 86.
  • a second cam stop 102 is integrally formed within counter bore 72. The first and second cam stops are preferably spaced apart a distance equalling one quarter turn of the cam member.
  • a transverse shoulder 104 is formed by a flange 106 or by a recess (not shown) within the hood 54 at the opposite end of the contact block 42 from the cam member 78.
  • the operation of the subject zero entry connector system will be described with reference to FIGS. 3 to 5.
  • the male connector 10 is inserted within the hooded opening 54 of the female connector 12 as shown in FIGS. 2 and 4.
  • This opening is polarized by the location of the cam member 78 and shoulder 104 in the female connector and the cam reactor surface 22 and flange 32 on the male connector thereby preventing mismating of the connectors.
  • the rigid contact pins 38 are not engaged by the blade portion 60 of the resilient contacts 58. Therefore the only force required to insert the male connector into the female connector is the force required to overcome the sliding friction between the mating peripherical surfaces of the connectors themselves.
  • the engagement of flange 32 and shoulder 104 serves a further function, namely, to prevent over travel of the connectors during the transverse move ment.
  • the flange 32 and shoulder 104 limit the relative transverse movement between the connectors.
  • the blades 60 of the resilient contacts 58 projecting from the face 62 cannot be damaged by being bent out of position.
  • the cam member 78 also serves a further function to its polarizing and relative transverse movement functions.
  • the cam and latching extension 94 is positioned to allow insertion of the male connector into the hood 54.
  • the cam latching extension 94 will bar entry of the male connector 10 into the hood 54.
  • the cam groove 88 serves to drive the latching member 74 outwardly when the cam member 78 is rotated to the latching position (see FIGS. 2 and 3). This action of the cam groove 88 allows for the removal of the cam member 78 from the contact block 42 should this be desired. Of course the cam member cannot be removed when the connectors are mated since the latching projection 98 would then engage shoulder 30.
  • strain relief housing is shown with the cable entering at an angle of approximately 45. It is clear that the entrance angle of the cable may be changed to any desired angle, the invention not being limited to a particular angle.
  • the subject zero insertion force connector system can be applied to other combinations of connectors than the cable to plate connection shown, such as cable to cable, etc., since the invention lies in the way the connection is made rather than the specific entities being connected.
  • a low entry force electrical connector system comprising:
  • first connector member having a plurality of passive contacts, each said passive contact having a contacting surface and being secured in individual bores in said first connector member;
  • a second mating connector member having a like plurality of active contacts, each of said active contacts being secured in individual bores in said second connector member and having a contacting surface extending from said bores,
  • each of said active contacts in said second connector member being associated with a passive contact in said first connector member and being overlappingly spaced apart from said associated contact when said connector members are initially mated;
  • cam means rotatably mounted on one of said contact carrying connector members and adapted to act directly on the other of said contact carrying connector members to cause relative transverse movement between said members, whereby said connector members are initially mated without said contacts engaging and said contacts are brought into engagement by the relative transverse movement resulting from actuating said cam means.
  • said first connector member is a male member having a mating face, said passive contacts extending within their respective bores to a point spaced from said mating face.
  • a low entry force electrical connector system according to claim 1 further comprising polarizing means on said connector members whereby only one mating position is possible.
  • a low entry force electrical connector system according to claim 1 further comprising locking means on said connector members, said looking means being brought into locking engagement by said relative transverse movement whereby said connector members are secured together.
  • a low entry force electrical connector system according to claim 1 wherein said second connector member includes a hood extending from a mating surface of said second connector member about the periphery thereof whereby connection of said connectors is polarized and said active contacts are protected when said connector members are disengaged.
  • a low entry force electrical connector system according to claim 1 further comprising strain relief means secured to at least one of said connector members.
  • a low entry force electrical connector system according to claim 1 further comprising cam travel limit means on said one of said connector members limiting the rotational movement of said cam means.
  • a low entry force electrical connector system further comprising latching means to releasably secure said cam means in said one of said connector members, and
  • each said passive contact is a rigid pin fixedly mounted in said first connector member.
  • each said active contact includes a connection portion adapted to be secured to an electrical lead
  • a resilient blade portion having a contact surface on a free end thereof.
  • a low entry force electrical connector system according to claim 1 wherein said cam means is mounted on one of said connector members adjacent one end thereof, and
  • cam reactor surface means formed on one end of the.
  • a low entry force electrical connector system according to claim 11 wherein said cam means includes a cam surface adapted to bear against said cam reactor surface, and
  • latching means adapted to lockingly engage one side of said cam reactor surface to prevent separation of said connector members when said contacts are engaged.
  • a low entry force electrical connector system ac- I cording to claim 11 further comprising locking means at the other end of each of said connector members, said locking means being brought into locking engagement by said relative transverse movement.
  • a low entry force electrical connector system according to claim 13 wherein said locking means comprises a recess in one of said connector members defining an angular shoulder, and
  • a low entry force electrical connector system according to claim 1 wherein said cam travel limit means comprises first and second fixed limit stops.
  • a low entry force electrical connector system according to claim 15 wherein said stops are spaced apart a distance defining a quarter of a turn of said cam means.
  • a low entry force electrical connector system comprising a first connector member having a plurality of active contacts therein, each of said active contacts being secured in individual bores in said first connector member and having a resilient blade portion projecting from a mating face of said first connector member in cantilever fashion;
  • each of said passive contacts comprising a rigid pin fixedly secured within individual boresin said second connector member;
  • cam means rotatably mounted on one end of one said contact carrying connector members and adapted to act directly on the like end of the other of said contact carrying connector members to effect relative transverse movement therebetween, whereby said connector members are initially mated without said contacts engaging and said realtive transverse movement brings said contacts into engagement.
  • a low entry force electrical connector system wherein said second connector member is a male member having a mating face, said passive contacts extending within their respective bores to a point spaced from said mating face.
  • a low entry force electrical connector system according to claim 17 further comprising polarizing means on said connector members whereby only one mating position is possible.
  • a low entry force electrical connector system according to claim 17 further comprising locking means on said connector members, said locking means being brought into locking engagement by said relative transverse movement whereby said connector members are secured together.
  • a low entry force electrical connector system according to claim 17 wherein said first connector member includes a hood extending from the mating surface and about the periphery thereof whereby mating of said connectors is polarized and said active contacts are protected when said connector members are disengaged.
  • a low entry force electrical connector system according to claim 17 further comprising strain relief means secured to at least one of said connector members.
  • a low entry force electrical connector system according to claim 17 further comprising cam travel limit means on said one of said connector members limiting the rotation movement of said cam means, said cam travel limit means comprising first and second fixed limit stops, spaced apart a distance defining a quarter of a turn of said cam means.
  • a low entry force electrical connector system according to claim 17 further comprising latching means adapted to releasabiy secure said cam means in said one of said connector members.
  • each said active contact includes a connection portion adapted to be secured to an electrical lead
  • a resilient blade portion having a contact surface on a free end thereof.
  • a low entry force electrical connector system according to claim 17 further comprising cam reactor surface means formed on said like end of the other of said connector members for cooperative reaction with said cam means to cause said relative transverse movement between said connector members.
  • a low entry force electrical connector system according to claim 26, wherein said cam means includes a cam surface adapted to bear against said cam reactor surface, and
  • latching means adapted to lockingly engage one side of said cam reactor surface to prevent separation of said connector members when said contacts are engaged.
  • a low entry force electrical connector system according to claim 26 further comprising locking means at the other end of each of said connector members, said locking means being brought into locking engagement by said relative transverse movement.
  • a low entry force electrical connector system according to claim 28 wherein said locking means comprises a recess in one of said connector members defining an angular shoulder, and

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
US00380316A 1973-07-18 1973-07-18 Zero entry connector system Expired - Lifetime US3848222A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
US00380316A US3848222A (en) 1973-07-18 1973-07-18 Zero entry connector system
CA203,296A CA1030629A (fr) 1973-07-18 1974-06-25 Connecteur electrique avec dispositif de retenue a came
DE2432328A DE2432328C2 (de) 1973-07-18 1974-07-05 Elektrischer Stecker
AU70938/74A AU490465B2 (en) 1973-07-18 1974-07-08 Electrical connector
GB3010174A GB1472225A (en) 1973-07-18 1974-07-08 Electrical connector
AT567774A AT343741B (de) 1973-07-18 1974-07-09 Elektrischer verbinder
CH940574A CH567809A5 (fr) 1973-07-18 1974-07-09
BR5729/74A BR7405729D0 (pt) 1973-07-18 1974-07-11 Conetor eletrico
IT25078/74A IT1017096B (it) 1973-07-18 1974-07-11 Connettore elettrico
NLAANVRAGE7409451,A NL175568C (nl) 1973-07-18 1974-07-12 Elektrische steekverbindingsinrichting.
FR7424568A FR2238262B1 (fr) 1973-07-18 1974-07-15
BE146610A BE817713A (fr) 1973-07-18 1974-07-16 Connecteur electrique
ES1974204749U ES204749Y (es) 1973-07-18 1974-07-17 Un conectador electrico.
JP8314574A JPS5410106B2 (fr) 1973-07-18 1974-07-18
SE7409405A SE7409405L (sv) 1973-07-18 1974-07-18 Elektriskt anslutningsdon
AR254781A AR199629A1 (es) 1973-07-18 1974-07-18 Conector electrico
HK190/79A HK19079A (en) 1973-07-18 1979-03-29 Electrical connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00380316A US3848222A (en) 1973-07-18 1973-07-18 Zero entry connector system

Publications (1)

Publication Number Publication Date
US3848222A true US3848222A (en) 1974-11-12

Family

ID=23500715

Family Applications (1)

Application Number Title Priority Date Filing Date
US00380316A Expired - Lifetime US3848222A (en) 1973-07-18 1973-07-18 Zero entry connector system

Country Status (16)

Country Link
US (1) US3848222A (fr)
JP (1) JPS5410106B2 (fr)
AR (1) AR199629A1 (fr)
AT (1) AT343741B (fr)
BE (1) BE817713A (fr)
BR (1) BR7405729D0 (fr)
CA (1) CA1030629A (fr)
CH (1) CH567809A5 (fr)
DE (1) DE2432328C2 (fr)
ES (1) ES204749Y (fr)
FR (1) FR2238262B1 (fr)
GB (1) GB1472225A (fr)
HK (1) HK19079A (fr)
IT (1) IT1017096B (fr)
NL (1) NL175568C (fr)
SE (1) SE7409405L (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977749A (en) * 1975-01-29 1976-08-31 International Telephone And Telegraph Corporation Electronic packaging assembly
US4168877A (en) * 1978-06-27 1979-09-25 Amp Incorporated Single lever back plane connector system
US4236190A (en) * 1978-05-31 1980-11-25 Hollingsead-Pryor Enterprises, Inc. Electrical connector structure
US4392705A (en) * 1981-09-08 1983-07-12 Amp Incorporated Zero insertion force connector system
US4407555A (en) * 1981-03-19 1983-10-04 Amp Incorporated Cam actuated DIP test socket
US4555156A (en) * 1984-11-16 1985-11-26 Amp Incorporated Electrical connector assembly having mating and unmating removable keys
US4647130A (en) * 1985-07-30 1987-03-03 Amp Incorporated Mounting means for high durability drawer connector
US4734052A (en) * 1985-07-04 1988-03-29 Precision Mecanique Labinal Electrical connector
US4981440A (en) * 1989-09-14 1991-01-01 Elco Elektronik Gmbh Electric connector
USRE34190E (en) * 1986-05-27 1993-03-09 Rogers Corporation Connector arrangement
US5538437A (en) * 1995-03-03 1996-07-23 Itt Industries, Inc. Connector assembly for IC card

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950059A (en) * 1975-06-27 1976-04-13 International Telephone & Telegraph Corporation Zero force electrical connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209302A (en) * 1962-11-05 1965-09-28 Ibm Connector operating devices
US3430183A (en) * 1966-11-30 1969-02-25 Amp Inc Plugboard system
US3587037A (en) * 1968-10-25 1971-06-22 Itt Low insertion force connector assembly
US3594698A (en) * 1969-06-30 1971-07-20 Itt Low insertion force connector assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216239A (en) * 1975-07-28 1977-02-07 Tech Res & Dev Inst Of Japan Def Agency Connector for photo fiber cable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209302A (en) * 1962-11-05 1965-09-28 Ibm Connector operating devices
US3430183A (en) * 1966-11-30 1969-02-25 Amp Inc Plugboard system
US3587037A (en) * 1968-10-25 1971-06-22 Itt Low insertion force connector assembly
US3594698A (en) * 1969-06-30 1971-07-20 Itt Low insertion force connector assembly

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977749A (en) * 1975-01-29 1976-08-31 International Telephone And Telegraph Corporation Electronic packaging assembly
US4236190A (en) * 1978-05-31 1980-11-25 Hollingsead-Pryor Enterprises, Inc. Electrical connector structure
US4168877A (en) * 1978-06-27 1979-09-25 Amp Incorporated Single lever back plane connector system
US4407555A (en) * 1981-03-19 1983-10-04 Amp Incorporated Cam actuated DIP test socket
US4392705A (en) * 1981-09-08 1983-07-12 Amp Incorporated Zero insertion force connector system
US4555156A (en) * 1984-11-16 1985-11-26 Amp Incorporated Electrical connector assembly having mating and unmating removable keys
US4734052A (en) * 1985-07-04 1988-03-29 Precision Mecanique Labinal Electrical connector
US4647130A (en) * 1985-07-30 1987-03-03 Amp Incorporated Mounting means for high durability drawer connector
US4664456A (en) * 1985-07-30 1987-05-12 Amp Incorporated High durability drawer connector
USRE34190E (en) * 1986-05-27 1993-03-09 Rogers Corporation Connector arrangement
US4981440A (en) * 1989-09-14 1991-01-01 Elco Elektronik Gmbh Electric connector
US5538437A (en) * 1995-03-03 1996-07-23 Itt Industries, Inc. Connector assembly for IC card

Also Published As

Publication number Publication date
HK19079A (en) 1979-04-06
JPS5028685A (fr) 1975-03-24
AR199629A1 (es) 1974-09-13
NL7409451A (nl) 1975-01-21
ATA567774A (de) 1977-10-15
SE7409405L (sv) 1975-01-20
NL175568B (nl) 1984-06-18
AU7093874A (en) 1976-01-08
CA1030629A (fr) 1978-05-02
BR7405729D0 (pt) 1975-05-20
NL175568C (nl) 1984-11-16
ES204749Y (es) 1976-05-01
DE2432328A1 (de) 1975-01-30
DE2432328C2 (de) 1984-09-13
FR2238262B1 (fr) 1978-01-20
FR2238262A1 (fr) 1975-02-14
IT1017096B (it) 1977-07-20
AT343741B (de) 1978-06-12
BE817713A (fr) 1975-01-16
CH567809A5 (fr) 1975-10-15
GB1472225A (en) 1977-05-04
JPS5410106B2 (fr) 1979-05-01
ES204749U (es) 1976-01-16

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