Patents Assigned to Kel Corporation
  • Patent number: 7491897
    Abstract: In order to suppress the occurrence of damage on a press-fit joining wiring board, a peak value of stress generated on the board in the case of a press-fitting a press-fit terminal into a through-hole is reduced so that it can not exceed the design standard value of the board. In the press-fit terminal in which a body part, retaining part, introducing part and forward end part are integrally formed, a cross-sectional area of the introducing part is reduced to be smaller than that of the retaining part, so that an intensity of the elastic force of the introducing part is decreased to be lower than that of the elastic force of the retaining part. Alternatively, on the wiring board, elastic material is filled into resin for combining sheet-like base material of the board so as to relieve an intensity of stress generated on the board itself.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: February 17, 2009
    Assignees: Fujitsu Ten Limited, Kel Corporation, Shin-Kobe Electric Machinery Co., Ltd.
    Inventors: Hiromichi Watanabe, Yoshifumi Fukatsu, Toshihiro Kasai, Naoki Sugita, Naofumi Saito, Hiroyuki Yamanaka
  • Patent number: 6908332
    Abstract: A connector structure 1 has a cable 3, and a left connector 10 and a right connector 20 connected respectively to left and right ends of the cable 3. The left and right connectors 10 and 20 respectively have terminal holding members 11, 21 that are made of an insulating material and hold a plurality of terminals, protective covers 13, 23 that are made of a conductive material and covers the terminal holding member, and pull tabs 15, 25. The pull tabs 15 and 25 respectively have tip end parts thereof bonded onto the covers 13, 23 respectively and extend out in the cable direction. The left and right connectors 10 and 20 are removed from respective counterpart connectors 5, 7 into which the left and right connector 10, 20 have been fitted by grasping the pull tabs 15, 25 and pulling in a direction such that the left and right connectors 10, 20 separate away from the respective counterpart connectors 5, 7.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: June 21, 2005
    Assignee: Kel Corporation
    Inventors: Hisafumi Takahashi, Atsushi Makiuchi
  • Patent number: 6737873
    Abstract: An electronic-part inspection device 20 comprises a plurality of terminals 30, a left terminal-retaining member 51 and a left swinging member 71, and each terminal 30 comprises a terminal base portion 31, a swinging arm portion 33, a contact portion 35 and an engaging portion 37. The terminal base portion 31 is located in the lower part of the terminal 30 and retained in the left terminal-retaining member 51, and the swinging arm portion 33 extends upward from the terminal base portion 31 and is capable of undergoing elastic deformation to swing back and forth. The contact portion 35 is located at the upper end of the swinging arm portion 33, and the engaging portion 37 is also located at the upper end of the swinging arm portion 33. The left terminal-retaining member 51 comprises base-receiving portions 58, which retain the terminal base portions 31 of the terminals 30, and a counter surface 63a provided on a middle wall 63 that exists in the base-receiving portions 58.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: May 18, 2004
    Assignee: Kel Corporation
    Inventor: Mitsuo Suzuki
  • Patent number: 6685499
    Abstract: A connector structure 1 has a cable 3, and a left connector 10 and a right connector 20 connected respectively to left and right ends of the cable 3. The left and right connectors 10 and 20 respectively have terminal holding members 11, 21 that are made of an insulating material and hold a plurality of terminals, protective covers 13, 23 that are made of a conductive material and covers the terminal holding member, and pull tabs 15, 25. The pull tabs 15 and 25 respectively have tip end parts thereof bonded onto the covers 13, 23 respectively and extend out in the cable direction. The left and right connectors 10 and 20 are removed from respective counterpart connectors 5, 7 into which the left and right connector 10, 20 have been fitted by grasping the pull tabs 15, 25 and pulling in a direction such that the left and right connectors 10, 20 separate away from the respective counterpart connectors 5, 7.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: February 3, 2004
    Assignee: Kel Corporation
    Inventors: Hisafumi Takahashi, Atsushi Makiuchi
  • Patent number: 6608756
    Abstract: An upstream side motherboard 50 having an upstream side system slot 51 and upstream side daughter board mounting slots 52 to 58 and a downstream side motherboard 60 having a downstream side system slot 61 and downstream side daughter board mounting slots 62, 63 . . . are connected together by a bridging board 10. The bridging board 10 has bridge wires that electrically connect a plurality of wiring pins provided in the upstream side daughter board mounting slots and a plurality of wiring pins provided in the downstream side system slot when an upstream side connector 11 is fitted into one the upstream side daughter board mounting slots and a downstream side connector 12 is fitted into the downstream side system slot 61, and IC switches 13 and 14 that carry out connection changing on prescribed wires out of the bridge wires.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: August 19, 2003
    Assignee: KEL Corporation
    Inventors: Hiroshi Higashida, Takaki Endo
  • Patent number: 6527592
    Abstract: A receptacle connector (R) comprises a plurality of receptacle contacts (70), each of which has a female contact portion (71) in a tuning-fork like shape, and a receptacle retaining member (60), which aligns and retains the receptacle contacts (70). A plug connector (P) comprises a plurality of plug contacts (40), each of which has a male contact portion (41) insertable into the female contact portion (71) and a plug retaining member (10), which aligns and retains the plug contacts (40). The plug and receptacle connectors (P) and (R) are matable and constitute a matching male and female connector assembly. The plug retaining member (10) includes a reinforcing member (12) which extends along a side fo the male contact portions (41) of the plug contacts (40) retained therein.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: March 4, 2003
    Assignee: Kel Corporation Ltd.
    Inventors: Shoichi Mochizuki, Shinichi Ikemoto
  • Patent number: 6475024
    Abstract: A cable connector comprises a plurality of female contacts 20 which are arrayed and held in a lateral direction inside an insulating housing 10, and a cable consisting of a plurality of conductors, the front ends of which are connected to said contacts and the rear ends of which extend externally from said housing. Here, the cable consisting of a plurality of conductors is an FPC cable 50 wherein a plurality of signal conducting layers 51 are formed on one face thereof and a ground conducting layer is formed on the other face thereof. The cable connector is constituted by connecting the signal circuit layers 51 to the plurality of female contacts 20, and connecting the ground conducting layer 55 to the shield cover 30 in the housing.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: November 5, 2002
    Assignee: Kel Corporation
    Inventor: Fumio Narui
  • Patent number: 6468101
    Abstract: A card connector 1, which is constructed with a main body 11, a flap member 21, a plurality of first contacts 31 and a plurality of second contacts 32, comprises a first connector section 10 and a second connector section 20. The first connector section 10 allows removable insertion of a first card-like memory module 51 through a insertion opening 12 into a slot-like receiving part provided at the lower part of the main body 11 for electrical connection through the first contacts 31, which are aligned and retained in the receiving part. The second connector section 20 allows removable installation of a second card-like memory module 52 for electrical connection through the second contacts 32, which are aligned and retained on the main body above the receiving part, with the flap member 21 being mounted on the upper part of the main body 11 pivotally to be opened and closed for installation of the second card-like memory module 52.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: October 22, 2002
    Assignee: KEL Corporation
    Inventor: Mitsuo Suzuki
  • Patent number: 6364702
    Abstract: An electrical cable connector P comprises a plurality of contacts 40, which are aligned and retained in a retaining member 10, and each contact includes a cable connection portion 42. The core wires 51 of cables are soldered respectively onto the upper surfaces of the cable connection portions 42. The retaining member 10 includes a plurality of receiving grooves, which are formed in alignment in a plane to receive, align and retain the cable connection portions 42, respectively. When the cable connection portions 42 are received and retained in the receiving grooves, and when the core wires 51 are placed on the upper surfaces of the cable connection portions, respectively, the upper ends of the core wires 51 are positioned at a height which is above the plane in which the grooves are formed. Therefore, all the core wires 51 are heated and soldered simultaneously by pressing a pulse heater on the core wires.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: April 2, 2002
    Assignee: KEL Corporation
    Inventors: Shoichi Mochizuki, Shinichi Ikemoto
  • Patent number: 6343951
    Abstract: Frame grounding fixtures (plug connector fixtures) 40 are provided at the longitudinal ends of the plug housing 10 for mounting the plug connector half 1 on a printed circuit board K1, and receptacle connector fixtures 80 are provided at the longitudinal ends of the receptacle housing 50 for mounting the receptacle connector half 5 on a printed circuit board K5. When the plug and receptacle connector halves 1 and 5 are intermated, the frame grounding fixtures 40 are brought into contact with the receptacle connector fixtures 80 because the contact surfaces of the frame grounding fixtures 40 are provided in the same planes as the inner surfaces 12c of the plug housing 10, and the contact surfaces of the receptacle connector fixtures 80 are provided in the same plane as the outer surfaces 52b of the receptacle housing 50.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: February 5, 2002
    Assignee: Kel Corporation
    Inventors: Yasuhiro Ono, Shinichi Ikemoto
  • Patent number: 6340307
    Abstract: The housing 10 is formed such that when the tilting angle of a miniature card 70 is in a predetermined range of acute angle (e.g., 20 to 25 degrees), the lower end 70a of the miniature card 70 is insertable into the groove 14 of the housing 10. In addition, guide portions 27 and 28 are provided on the front surface of the rear wall 11 and on the upper end of the front wall 12, respectively, to lead the lower end 70a of the miniature card 70 which is tilted to an angle greater than the predetermined range. Thereby, the space required for the installation of the miniature card is made relatively small to produce a compact connector. The groove 14, into which the lower end 70a of the miniature card 70 is inserted for the installation of the miniature card, is formed or defined by the rear wall 11 and the front wall 12 of the housing 10, and lateral arms 13 are provided at the lateral ends of the rear and front walls 11 and 12 to connect these walls.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: January 22, 2002
    Assignee: Kel Corporation
    Inventor: Naoki Sugita
  • Patent number: 6340308
    Abstract: A plurality of signal contact grooves 21 are provided in a laterally extending row, each groove opening through the front surface of a rear wall 11 of a housing 10. In each of the signal contact grooves 21, a first signal-transmission contact 30 and a second signal-transmission contact 40 are mounted in a front and rear pair. The second arm portions 44 of the second signal-transmission contacts 40, which are positioned rearward, are positioned above and extend longer than the second arm portions 34 of the first signal-transmission contacts 30, which are positioned forward. As a result, the contact portions 35 and 45 of the first and second signal-transmission contacts 30 and 40 are aligned in upper and lower rows in front of the front surface of the rear wall 11. This design is advantageous in reducing the number of steps necessary for the production of the signal-transmission contacts of the connector, and it also makes the mounting of the contacts into the housing easy, improving productivity.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: January 22, 2002
    Assignee: Kel Corporation
    Inventor: Naoki Sugita
  • Patent number: 6328572
    Abstract: The motherboard MB1 of the present invention is a motherboard comprising a plurality of plug connectors 12 installed on the front face of the board 11 and a bus line for inter-connecting these plug connectors so as to allow inter-communication of daughter boards DB1-DB7 connected to the plug connectors 12. The motherboard is configured such that a termination board TB1 having a terminating resistance to decrease reflection noise of the bus line is connected to the plug connector at the last slot S8 of the bus line among the plug connectors 12, 12, . . . installed on the front face of the motherboard. Alternatively, the motherboard is configured such that the termination board is connected to the rear face of the last slot S8.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: December 11, 2001
    Assignee: Kel Corporation
    Inventors: Hiroshi Higashida, Kimiyasu Makino
  • Patent number: 6325681
    Abstract: An electrical cable connector comprises a plurality of female contacts 20 and a plurality of cables 50. The female contacts 20 are aligned and retained in a row extending in a right and left direction in an insulative housing 10, and one end of each cable is connected to a corresponding female contact in the insulative housing 10. Each of the female contacts comprises a base portion 21, which is fixed in the insulative housing 10 and to which the core wire of a corresponding cable 50 is connected, and a resilient arm portion 25, which is continuous from the base portion 21 and extends along the base portion 21 with a predetermined distance therebetween. When this connector is engaged with a matable connector, each female contact receives and holds a corresponding male contact of the matable connector in a space between the base portion 21 and the resilient arm portion 25, thus establishing the electrical connection of the female and male contacts.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: December 4, 2001
    Assignee: Kel Corporation
    Inventor: Etsuro Doi
  • Patent number: 6315587
    Abstract: A connector element 5 removably holding a card 2 containing stored data is mounted within a case 100 such that the connector element is slidable in the card 2 insert/eject direction, this connector element 5 being normally urged in the card 2 eject direction by springs SP1, SP2. A connector element mounting member 120 is provided with a locked portion 125 detained by a locking member 143 urged rightward by a spring 142 when the connector element 5 has been slid in the card 2 insert direction, and the locking member 143 is unlocked by leftward motion thereof by means of magnetic attraction by a solenoid 140 operated by a switch 147.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: November 13, 2001
    Assignee: Kel Corporation
    Inventors: Shinichi Ikemoto, Tomoyuki Mogami
  • Patent number: 6299481
    Abstract: A shielded connector comprises a plurality of female contacts 20 and a shield cover 30. The female contacts 20 are aligned and retained in a row extending in a right and left direction in an insulative housing 10, and said shield cover 30 is mounted on the insulative housing 10. A plurality of insertion openings 11a are provided at the front of the insulative housing 10, and the male contacts of a matable connector being inserted through the insertion openings 11a into the shielded connector are engaged with the female contacts 20. The shield cover 30 is formed of an electrically conductive plate and bent in a “U” figure, and it is provided with a plurality of through holes 36. When the shield cover 30 is mounted on the insulative housing 10, covering the upper and lower surfaces and the front surface thereof, the through holes 36 of the shield cover 30 meet the insertion opening 11a of the insulative housing 10.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: October 9, 2001
    Assignee: Kel Corporation
    Inventor: Etsuro Doi
  • Patent number: 6293823
    Abstract: A nut-fixing part 20 formed in a housing 10 has a nut-holding room 26, where a nut 30 is insertable and detachable by a movement in a direction perpendicular to the thickness direction of the nut 30. At the entrance of the nut-holding room 26, a projection 27 is provided to prevent the inserted nut 30 from sliding out. By this construction, this type of connector can be miniaturized further. In addition, when this connector mounted on a circuit board is heated in a furnace for soldering electrical connections, even if the housing experiences a stress relief, there is no possibility of any nut falling off from the housing.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: September 25, 2001
    Assignee: Kel Corporation
    Inventor: Akira Kasuga
  • Patent number: 6276448
    Abstract: A heat-transfer connector 1 comprises a heat-collection side connector half 10, a heat-radiation side connector half 20 and comb-like contacts 25. The heat-collection side connector half 10, which is made of a metal, includes a concave receptive part 10a that extends in a right and left direction while the heat-radiation side connector half 20, which is also made of a metal, includes a convex insert part 20a that extends also in the right and left direction. The comb-like contacts 25 are provided along the front and rear walls of the insert part 20a, respectively, and each of the comb-like contacts 25 protrudes a little in the front and rear direction in a cross-sectional view. When these two connector halves, which are detachable, are connected with each other, heat can be conducted through the comb-like contacts 25, which are in solid contact with and between the two connector halves.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: August 21, 2001
    Assignee: KEL Corporation
    Inventor: Yasuo Maruno
  • Patent number: D453922
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: February 26, 2002
    Assignee: Kel Corporation
    Inventors: Yoichiro Azuma, Yasuhiro Ono, Shigenori Koike
  • Patent number: D471522
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: March 11, 2003
    Assignee: KEL Corporation
    Inventor: Yumiko Azuma