Patents by Inventor Junichi Akama
Junichi Akama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20040029410Abstract: A connector includes multiple pairs of signal contacts arranged in a housing, and facilitates the wiring design and the wiring operation for substrates. The two signal contacts in each of the multiple pairs are arranged at a distance in the longitudinal direction of the housing. With this arrangement, excellent coupling can be established between the two signal contacts, and signals can be balanced-transmitted without causing a phase difference. Also, the lengths of each pair of wires of a wiring substrate to be connected to the multiple pairs of signal contacts can be easily made uniform. Accordingly, there is no need to prepare excessive wiring areas, and the substrate wiring design and the wiring operation can be simplified.Type: ApplicationFiled: July 7, 2003Publication date: February 12, 2004Applicant: FUJITSU COMPONENT LIMITEDInventors: Junichi Akama, Masahiro Hamazaki, Tadashi Kumamoto, Manabu Shimizu, Hideo Miyazawa, Fumio Kurotori, Moriyuki Ueno
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Patent number: 6685511Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.Type: GrantFiled: September 26, 2001Date of Patent: February 3, 2004Assignee: Fujitsu Takamisawa Component Ltd.Inventors: Junichi Akama, Hirofumi Yanagisawa
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Patent number: 6638089Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.Type: GrantFiled: November 22, 2002Date of Patent: October 28, 2003Assignee: Fujitsu Takamisawa Component LimitedInventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
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Patent number: 6619987Abstract: A balanced transmission connector, includes a relay board, a plug body for balanced transmission provided on an end part of the relay board, a cable for balanced transmission connected with another end part of the relay board, and a shield cover assembly covering the relay board, the plug body for balanced transmission, and a part of the cable and including a first half shield cover having slide wall parts, an edge of which has a step-shaped surface including a base flat surface and a raised flat surface extending in parallel and in a longitudinal direction of the edge.Type: GrantFiled: November 16, 2001Date of Patent: September 16, 2003Assignee: Fujitsu Component LimitedInventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Yoshinori Sata, Hideo Miyazawa
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Publication number: 20030073351Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.Type: ApplicationFiled: November 22, 2002Publication date: April 17, 2003Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITEDInventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
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Publication number: 20030060083Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.Type: ApplicationFiled: July 3, 2002Publication date: March 27, 2003Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITEDInventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
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Patent number: 6533614Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.Type: GrantFiled: July 3, 2002Date of Patent: March 18, 2003Assignee: Fujitsu Takamisawa Component LimitedInventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
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Publication number: 20030036310Abstract: A balanced transmission connector, includes a relay board, a plug body for balanced transmission provided on an end part of the relay board, a cable for balanced transmission connected with another end part of the relay board, and a shield cover assembly covering the relay board, the plug body for balanced transmission, and a part of the cable and including a first half shield cover having side wall parts, and edge of which has a step-shaped surface including a base flat surface and a raised flat surface extending in parallel and in a longitudinal direction of the edge, the base flat surface positioned on an interior side of the side walls, and a second half shield cover having side wall parts, an edge of which has a step-shaped surface including a base flat surface and a raised flat surface extending in parallel and in a longitudinal direction of the edge, the base flat surface of the side walls of the second half shield cover positioned on an exterior side of the side walls, wherein the raised flat surfaceType: ApplicationFiled: November 16, 2001Publication date: February 20, 2003Inventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Yoshinori Sata, Hideo Miyazawa
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Patent number: 6508657Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.Type: GrantFiled: July 6, 2001Date of Patent: January 21, 2003Assignee: Fujitsu Takamisawa Component Ltd.Inventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
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Publication number: 20020177334Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.Type: ApplicationFiled: July 3, 2002Publication date: November 28, 2002Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITEDInventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
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Patent number: 6482028Abstract: A cable connector includes a cable including a conductor, a contact connected to a tip part of the conductor, and a connector connected to the cable. The connector includes a terminal part including an insulator having a hole formed therein. The contact is pressed into the hole.Type: GrantFiled: July 27, 2001Date of Patent: November 19, 2002Assignee: Fujitsu Takamisawa Component LimitedInventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Hideo Miyazawa, Moriyuki Ueno
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Patent number: 6439928Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.Type: GrantFiled: May 29, 1998Date of Patent: August 27, 2002Assignee: Fujitsu Takamisawa Component LimitedInventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
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Publication number: 20020081874Abstract: A cable connector includes a cable including a conductor, a contact connected to a tip part of the conductor, and a connector connected to the cable. The connector includes a terminal part including an insulator having a hole formed therein. The contact is pressed into the hole.Type: ApplicationFiled: July 27, 2001Publication date: June 27, 2002Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITEDInventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Hideo Miyazawa, Moriyuki Ueno
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Patent number: 6371812Abstract: A plug connector includes an electrically insulating body including a housing and a pair of arms; a plurality of pairs of first and second right-angled signal contact elements supported by the housing such that the first right-angled signal contact element is arranged above the second right-angled signal contact element, each of the right-angled signal contact elements having a substantially right-angled contact portion protruding backward from the housing and a leading portion inserted into the housing, the contact portion having a horizontal part and a vertical part; a plurality of ground contact elements supported by the housing and disposed alternately with the plurality of pairs of first and second right-angled plug signal contacts, each of the ground contact elements provided with two ground terminals; and upper and lower electrically insulating brackets assembled to the housing.Type: GrantFiled: August 18, 2000Date of Patent: April 16, 2002Assignee: Fujitsu Takamisawa Component Ltd.Inventors: Osamu Daikuhara, Junichi Akama
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Patent number: 6368121Abstract: A connector assembly for balanced transmission includes a plug connector wherein a plurality of plug-type contact element arrays extend parallel to each other and a plug-type ground plate is disposed between neighboring plug-type contact element arrays, and a jack connector wherein a plurality of jack-type contact element arrays extend parallel to each other and a jack-type ground contact elements for the plug-type ground plate are disposed between neighboring jack-type contact element arrays.Type: GrantFiled: November 2, 2000Date of Patent: April 9, 2002Assignee: Fujitsu Takamisawa Component LimitedInventors: Moriyuki Ueno, Hirofumi Yanagisawa, Yasuyuki Miki, Akira Okada, Satoshi Katoh, Junichi Akama
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Patent number: 6361367Abstract: A plug connector includes an electrically insulating body including a housing and a pair of arms; a plurality of pairs of first and second right-angled signal contact elements supported by the housing such that the first right-angled signal contact element is arranged above the second right-angled signal contact element, each of the right-angled signal contact elements having a substantially right-angled contact portion protruding backward from the housing and a leading portion inserted into the housing, the contact portion having a horizontal part and a vertical part; a plurality of ground contact elements supported by the housing and disposed alternately with the plurality of pairs of first and second right-angled plug signal contacts, each of the ground contact elements provided with two ground terminals; and upper and lower electrically insulating brackets assembled to the housing.Type: GrantFiled: May 1, 2000Date of Patent: March 26, 2002Assignee: Fujitsu Takamisawa Component Ltd.Inventors: Osamu Daikuhara, Junichi Akama
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Publication number: 20020031932Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.Type: ApplicationFiled: July 6, 2001Publication date: March 14, 2002Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITEDInventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
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Publication number: 20020009906Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.Type: ApplicationFiled: September 26, 2001Publication date: January 24, 2002Applicant: Fujitsu Takamisawa Component LimitedInventors: Junichi Akama, Hirofumi Yanagisawa
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Patent number: 6336827Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.Type: GrantFiled: November 9, 1998Date of Patent: January 8, 2002Assignee: Fujitsu Takamisawa Component Ltd.Inventors: Junichi Akama, Hirofumi Yanagisawa
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Publication number: 20020002004Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.Type: ApplicationFiled: November 9, 1998Publication date: January 3, 2002Inventors: JUNICHI AKAMA, HIROFUMI YANAGISAWA