Patents by Inventor Keiichi Ito

Keiichi Ito 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).

  • Patent number: 6969276
    Abstract: A metal terminal has a terminal body having a crimp part crimped to a wire and a fastening part connected to the terminal body through breaking parts. The fastening part has a through-hole for passage of a bolt. The metal terminal further includes a co-fastening part formed in the terminal body. The tip side of the co-fastening part is fastened to a vehicle body by the bolt, together with the fastening part. When detaching the terminal body from the vehicle body, one side of the one terminal body is pulled up in a direction opposite to the fastening direction of the bolt under condition that the fastening part and the co-fastening part are together fastened by the bolt. Consequently, the co-fastening part is released from its fastened condition and a breaking force is applied on the breaking parts.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: November 29, 2005
    Assignee: Yazaki Corporation
    Inventors: Shuji Ono, Hiroaki Arai, Hiroki Goto, Masahiro Takamatsu, Koji Nomura, Shyunsaku Takeuchi, Keiichi Ito, Yoshihide Tsukamoto, Masanori Wakui, Isao Yoneyama
  • Patent number: 6967692
    Abstract: A luminance signal processing apparatus that detects an average luminance level, adaptively to various video signal formats.
    Type: Grant
    Filed: November 24, 2000
    Date of Patent: November 22, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuki Kakuya, Atsuhisa Kageyama, Nobutaka Okada, Keiichi Ito
  • Patent number: 6965417
    Abstract: An object of the present invention is to provide a signal processor which improves the offset accuracy of a video signal without increasing the number of bits of a circuit. An N-bit adder (103) adds a video signal (S101) and an upper-N-bit signal of a brightness control signal (S102) as an offset value. A 1-bit pulse generator (107) generates a 1-bit pulse signal (S107) in which “1” and “0” have equal chances of appearing at random. A selector (106) selects the 1-bit pulse signal (S107) when the LSB of the brightness control signal (S102) is “1”, while selects a ground level “0” when the LSB is “0”, and supplies the selected signal to a carry input of the N-bit adder (103).
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: November 15, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hidetoshi Suzuki, Katsuya Ishikawa, Keiichi Ito, Hisao Kunitani
  • Patent number: 6959144
    Abstract: Providing a hot air heater and an expansion in the air blowing passage of the hot air heater and suppressing increases in air trunk resistance even if electric heaters are arranged in this expansion in a plurality of stages prevents increases in the rotation speed of the air blowing fan in order to obtain a target air flow which in turn causes the operating noise to grow louder. Therefore, an expansion 35 was formed along the air blowing passage 32. This expansion 35 has an entrance opening 351 and an exit opening 352 and functions as a storage portion that contains the electric heaters 34. The electric heaters are arranged in a plurality of stages in such a manner as to face said entrance opening and a distance between the entrance opening in the expansion and one of the electric heaters that has a highest wind speed at the entrance opening in the expansion of distances between the entrance opening in the expansion and the respective electric heaters is set farther.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: October 25, 2005
    Assignee: Rinnai Corporation
    Inventors: Yukihiko Shimonoma, Keiichi Ito, Yoshinori Fujisawa, Yoshimune Yamada
  • Publication number: 20050205080
    Abstract: Disclosed is a space heater, with an air cleaning function, that monitors combustion at a burner, and prevents the halting of combustion due to the erroneous detection of a combustion abnormality.
    Type: Application
    Filed: January 5, 2005
    Publication date: September 22, 2005
    Applicant: RINNAI CORPORATION
    Inventors: Shinji Kuroda, Keiichi Ito, Yoshinori Fujisawa, Shinichi Yue
  • Patent number: 6923678
    Abstract: A fastening device for facilitating temporary fastening of an electronic component to a circuit board. The fastening device includes a base embedded in an electronic device and two elastic plates extending from the base. Each elastic plate includes a diagonal portion, which extend diagonally relative to the plane of the circuit board, and a leg, which extends continuously from the diagonal portion. When the legs are inserted through a connecting hole of the circuit board, the resilient force of the elastic plates presses the diagonal portions against the wall of the connecting hole.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: August 2, 2005
    Assignee: Kabushiki Kaisha Tokai Rika Denki Selsakusho
    Inventors: Yoshiaki Kato, Tetsuya Hattori, Keiichi Ito, Masato Minakata, Atsushi Nishida
  • Patent number: 6918783
    Abstract: A first connector housing is provided with a flexible lock arm. A tubular fitting detector is fitted to an outer periphery of the first connector housing while being slidable thereon between a first position and a second position. A retainer is provided on the fitting detector, and adapted to be engaged with a first portion of the lock arm in a case where the fitting detector is placed at the first position, and engaged with a second portion of the lock arm in a case where the fitting detector is placed at the second position. A second connector housing is provided with a projection adapted to release the engagement between the retainer and the first portion of the lock arm in a case where the second connector housing is completely fitted with the first connector housing, so that the fitting detector is allowed to slide from the first position to the second position.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: July 19, 2005
    Assignee: Yazaki Corporation
    Inventors: Tomomi Endo, Atsushi Nishida, Yoshitaka Kashima, Masato Minakata, Keiichi Ito
  • Patent number: 6907192
    Abstract: If both the electric heaters and combustion heaters constitute a hybrid type hot-air heater wherein both heaters are equipped with inlets adjacent to each other and are also housed within a frame and separated such that the air blowing systems of each heater are independent of each other, air leakage will occur in only the combustion heater during the heating operation in a direction opposite to the air blowing passage of the electric heater thereby resulting in dust adhering to the electric heater. If the electric heater is operated in this state, the dust will be heated and then burn causing a foul odor to occur when the heating operation first starts. Therefore, the air blowing fan 43 runs to remove any dust that entered into the air blowing passage before the electric heater 4 runs when the electric heater unit 4, equipped with an electric heater 44, is performing a heating operation.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: June 14, 2005
    Assignee: Rinnai Corporation
    Inventors: Keiichi Ito, Toshiyuki Nomura, Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada
  • Patent number: 6882796
    Abstract: In a configuration of a hybrid hot air heater in which a gas heater unit 2 and an electric heater unit 3 are incorporated into one chassis at the upper part and lower part, respectively, in such a manner that their respective air-blowing systems may be independent of each other, the heater itself is made more compact even with increases in the cross-sectional area of inlets 13a and 13b equipped with anti-dust filters 6a and 6b, respectively. The second inlet 13b of the electric heater unit 3 provided on the chassis 11 is arranged below a gas burner 20 in such a manner as to conserver space and serves as an air inlet passage on the rear side of a housing 211 of a first air-blowing fan 21 that separates the gas heater unit 2 and the electric heater unit 3 from each other.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: April 19, 2005
    Assignee: Rinnai Corporation
    Inventors: Keiichi Ito, Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada
  • Publication number: 20050036770
    Abstract: In a configuration of a hybrid hot air heater in which a gas heater unit 2 and an electric heater unit 3 are incorporated into one chassis at the upper part and lower part, respectively, in such a manner that their respective air-blowing systems may be independent of each other, the heater itself is made more compact even with increases in the cross-sectional area of inlets 13a and 13b equipped with anti-dust filters 6a and 6b, respectively. The second inlet 13b of the electric heater unit 3 provided on the chassis 11 is arranged below a gas burner 20 in such a manner as to conserver space and serves as an air inlet passage on the rear side of a housing 211 of a first air-blowing fan 21 that separates the gas heater unit 2 and the electric heater unit 3 from each other.
    Type: Application
    Filed: October 2, 2003
    Publication date: February 17, 2005
    Inventors: Keiichi Ito, Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada
  • Patent number: 6840781
    Abstract: A connector has terminals, each having a tip end portion. A wiring board has through holes. A land is provided on the wiring board about each through hole. When the connector is mounted on the wiring board, each terminal is connected to one of the lands with a part of the tip end portion being located in the corresponding through hole. The ratio of the cross-sectional area of each tip end portion to the cross-sectional area of each through hole is at least 0.11 and no more than 0.89. This improves the reliability of the joint portions between the terminals and the wiring board.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: January 11, 2005
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Harehide Sasaki, Yoshiaki Kato, Keiichi Ito, Masato Minakata, Atsushi Nishida
  • Patent number: 6840814
    Abstract: A connector is provided with a connector housing including one or more terminal housing chambers each including a first open end and a second open end; and one or more terminals each comprising a contact portion at a distal end thereof for contacting the opposite terminal and a solder tail extended from a proximal end thereof. The terminals are respectively housed in the terminal housing chambers with setting the distal ends thereof directed to the first open ends. Each terminal has a length so that the proximal end thereof reaches the same level as or protrudes from the second open end when the terminal is completely housed in the respective terminal housing chamber.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: January 11, 2005
    Assignee: Yazaki Corporation
    Inventors: Masaru Fukuda, Toshikaki Okabe, Tetsuya Yamashita, Keiichi Ito, Masanori Wakui, Isao Yoneyama
  • Publication number: 20050003703
    Abstract: A metal terminal has a terminal body (19) having a crimp part (5) crimped to a wire and a fastening part (25) connected to the terminal body (19) through breaking parts (21, 21). The fastening part (25) has a through-hole (23) for passage of a bolt (7). The metal terminal further includes a co-fastening part (27) formed in the terminal body (19). The tip side of the co-fastening part (27) is fastened to a vehicle body (13) by the bolt (7), together with the fastening part (25). When detaching terminal body (19) from the vehicle body (13), one side of the one terminal body (19) is pulled up in a direction opposite to the fastening direction of the bolt (7) under condition that the fastening part (25) and the co-fastening part (27) are together fastened by the bolt (7). Consequently, the co-fastening part (27) is released from its fastened condition and a breaking force is applied on the breaking parts (21, 21).
    Type: Application
    Filed: September 26, 2002
    Publication date: January 6, 2005
    Inventors: Shuji Ono, Hiroaki Arai, Hiroki Goto, Masahiro Takamatsu, Koji Nomura, Shyunsaku Takeuchi, Keiichi Ito, Yoshihide Tsukamoto, Masanori Wakui, Isao Yoneyama
  • Patent number: 6830490
    Abstract: An adapter has a cylindrical body which is screwed onto a battery post, and a flange portion formed on a top portion of the cylindrical body to be clamped by a screwing tool. A terminal body includes a substantially U-shaped adaptor fitting portion which accommodates the adapter therein, and a seat portion on which an electric wire terminal is fixed. A lever includes a cam portion and is supported on the terminal body so as to be pivotable between a first position and a second position. A space in which the flange portion is capable of passing through is secured inside of the adaptor fitting portion when the lever is in the first position. The cam portion is abutted against an outer periphery of the cylindrical body of the adaptor so that the adaptor is retained between the cam portion and an inner face of the adaptor fitting portion, when the lever is in the second position. The flange portion of the adaptor is engaged with a top end face of the adapter fitting portion of the terminal body.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: December 14, 2004
    Assignee: Yazaki Corporation
    Inventors: Takao Murakami, Masaru Fukuda, Keiichi Ito, Kazuyuki Shiraki, Masanori Wakui
  • Patent number: 6824430
    Abstract: A fusible link unit having a fuse circuit structure containing a plurality of female terminal parts linked through fusible members to a linking plate and screw fixing terminal parts, which are connected to the fuse circuit structure in a chain manner, and a housing into which the fuse circuit structure is assembled, is disclosed. In the fusible link unit, the fuse circuit structure is formed by laminating a plurality of part plates, and the part plates include linking portions corresponding to the linking plates, and the female terminal parts with the fusible members connected thereto and the screw fixing terminal parts, which are shared by the part plates.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: November 30, 2004
    Assignee: Yazaki Corporation
    Inventors: Norio Matsumura, Goro Nakamura, Keiichi Ito, Yoshihiko Nakahama, Kazuhiro Kusuyama
  • Publication number: 20040185700
    Abstract: A first connector housing is provided with a flexible lock arm. A tubular fitting detector is fitted to an outer periphery of the first connector housing while being slidable thereon between a first position and a second position. A retainer is provided on the fitting detector, and adapted to be engaged with a first portion of the lock arm in a case where the fitting detector is placed at the first position, and engaged with a second portion of the lock arm in a case where the fitting detector is placed at the second position. A second connector housing is provided with a projection adapted to release the engagement between the retainer and the first portion of the lock arm in a case where the second connector housing is completely fitted with the first connector housing, so that the fitting detector is allowed to slide from the first position to the second position.
    Type: Application
    Filed: February 5, 2004
    Publication date: September 23, 2004
    Applicant: Yazaki Corporation
    Inventors: Tomomi Endo, Atsushi Nishida, Yoshitaka Kashima, Masato Minakata, Keiichi Ito
  • Patent number: 6795643
    Abstract: When errors occurred that prevented operation of one heater unit in a conventional hybrid type hotair heater, the heating operation was continued by means of the other heater unit although the user could not immediately recognize that error thereby resulting in the possibility that the error condition might remain in the hotair heater. Therefore, an error detection means was installed in each gas and electric heater unit to detect errors that prevent heating operation in each of these heater units. When an error is detected in one heater unit during the heating operation by means of said error detection means, the heating operation of the device stops once. When the operation starts up again, the other heater unit, where said error did not occur, runs and the heating operation continues.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: September 21, 2004
    Assignee: Rinnai Corporation
    Inventors: Keiichi Ito, Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada
  • Patent number: 6773283
    Abstract: A connector housing (6) of the connector device (1) is composed of an outer housing (9) to be mounted onto a printed circuit board (2) by screwing, and an inner housing (8) connected to the outer housing (9) so as to be movable in the right and left direction with respect to the outer housing (9). Into the inner housing (8), there is incorporated a terminal (7) including a connecting portion (7a) to be connected by a terminal (5) of a mating connector device (3), a spring portion (7c), and a switch contact (7b) respectively formed integral with the terminal (7). On the printed circuit board (2), there is disposed an electrode (2a) with which the switch contact (7b) can be elastically contacted. Thanks to this structure, by switchingly moving the inner housing (8) in the right and left direction, circuit switching can be achieved.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: August 10, 2004
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Kazuharu Yoshimatsu, Yoshiaki Kato, Keiichi Ito, Kazuyuki Shiraki, Masanori Wakui
  • Publication number: 20040151480
    Abstract: If both the electric heaters and combustion heaters constitute a hybrid type hot-air heater wherein both heaters are equipped with inlets adjacent to each other and are also housed within a frame and separated such that the air blowing systems of each heater are independent of each other, air leakage will occur in only the combustion heater during the heating operation in a direction opposite to the air blowing passage of the electric heater thereby resulting in dust adhering to the electric heater. If the electric heater is operated in this state, the dust will be heated and then burn causing a foul odor to occur when the heating operation first starts. Therefore, the air blowing fan 43 runs to remove any dust that entered into the air blowing passage before the electric heater 4 runs when the electric heater unit 4, equipped with an electric heater 44, is performing a heating operation.
    Type: Application
    Filed: December 4, 2003
    Publication date: August 5, 2004
    Applicant: RINNAI CORPORATION
    Inventors: Keiichi Ito, Toshiyuki Nomura, Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada
  • Publication number: 20040130430
    Abstract: A fusible link unit having a fuse circuit structure containing a plurality of female terminal parts linked through fusible members to a linking plate and screw fixing terminal parts, which are connected to the fuse circuit structure in a chain manner, and a housing into which the fuse circuit structure is assembled, is disclosed. In the fusible link unit, the fuse circuit structure is formed by laminating a plurality of part plates, and the part plates include linking portions corresponding to the linking plates, and the female terminal parts with the fusible members connected thereto and the screw fixing terminal parts, which are shared by the part plates.
    Type: Application
    Filed: October 1, 2003
    Publication date: July 8, 2004
    Inventors: Norio Matsumura, Goro Nakamura, Keiichi Ito, Yoshihiko Nakahama, Kazuhiro Kusuyama