Patents by Inventor Keigo Atsumi

Keigo Atsumi 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: 6948986
    Abstract: A housing (30) has cavities (31) for receiving terminal fittings (10), and a lock (33) is provided in each cavity (31). The terminal fitting (10) temporarily resiliently deforms the lock (33) when the terminal fitting (10) is inserted into the cavity (31). The lock (33) then is restored resiliently to engage the terminal fitting (10) when the terminal fitting (10) reaches a proper depth. An outer wall (17) of the terminal fitting (10) facing the lock (33) has a locking projection (27) projecting toward and engageable with the lock (33). A recess (54) is formed in a surface of the lock (33) that slides in contact with the locking projection (27) in an inserting process. An arcuate surface (29a) of the locking projection (27) and a bottom surface (54a) of the recess (54) have substantially conforming shapes.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: September 27, 2005
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Eiji Kojima, Keigo Atsumi, Atsushi Nishida, Masato Minakata
  • Patent number: 6948978
    Abstract: A connector has a housing (20) with cavities (26) for receiving terminals (10). A lock (30) projects is provided in each cavity (26) and has a forwardly tapered locking surface (32) that is sloped to project more forward at the base than at the top. The connector also has a retainer (50) with a restricting plate (53) to prevent displacement of the locks (30) toward deformation spaces (36). Push-up protrusions (60) of the restricting plate (53) slip under the lower surfaces of the locks (30) as the retainer (50) is pushed towards a full locking position and push the locks (30) up towards cavities (26). A cam action of the sloped locking surfaces (32) pushes the female terminals (10) forward and against front walls (27).
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: September 27, 2005
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tomonari Itou, Keigo Atsumi, Atsushi Nishida, Masato Minakata
  • Publication number: 20050009412
    Abstract: A housing (30) has cavities (31) for receiving terminal fittings (10), and a lock (33) is provided in each cavity (31). The terminal fitting (10) temporarily resiliently deforms the lock (33) when the terminal fitting (10) is inserted into the cavity (31). The lock (33) then is restored resiliently to engage the terminal fitting (10) when the terminal fitting (10) reaches a proper depth. An outer wall (17) of the terminal fitting (10) facing the lock (33) has a locking projection (27) projecting toward and engageable with the lock (33). A recess (54) is formed in a surface of the lock (33) that slides in contact with the locking projection (27) in an inserting process. An arcuate surface (29a) of the locking projection (27) and a bottom surface (54a) of the recess (54) have substantially conforming shapes.
    Type: Application
    Filed: June 24, 2004
    Publication date: January 13, 2005
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Eiji Kojima, Keigo Atsumi, Atsushi Nishida, Masato Minakata
  • Patent number: 6837753
    Abstract: A split-type connector (10) has a holder (11) and auxiliary connectors (28) that can be mounted in the holder (11). A retainer (34) is mountable in the holder (11) and can be moved from a first position where the auxiliary connectors (28) can be mounted in the holder (11) and a second position where the auxiliary connectors (28) are locked. The retainer (34) has returning slanted surfaces (40) for pushing the retainer (34) from the second position to the first position in the process of mounting auxiliary connectors (28) into the holder (11).
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: January 4, 2005
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
  • Patent number: 6827593
    Abstract: A lever-type connector (10) has a frame-shaped holder (11) for accommodating auxiliary connectors (24). A lever (40) is mounted on the holder (11) and is adapted to connect the lever-type connector (10) and a male connector (50) by cam action effected as the lever (40) is rotated. The lever (40) extends along only one wall surface of the holder (11). Thus, wires (27) and the lever (40) are unlikely to interfere with each other. Further, the lever (40) is accommodated in a recess (16) of the holder (11) and is held from opposite sides along a direction of the rotational axis. Thus, the lever (40) will not deform along the direction of the rotational axis and will not detach from the holder (11).
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: December 7, 2004
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
  • Patent number: 6824428
    Abstract: A connector has a housing (11) with a cavity (12) for receiving a rectangular tube (Ta) of a terminal fitting (T). A lock (13) is formed on a surface of the cavity (12) for engaging the terminal fitting (T). The cavity (11) has a first guiding surface (14a) at a corner adjacent a surface of the cavity (12) opposed to the lock (13) for narrowing the width of a cavity (12). A retainer (21) engages a lower surface of the lock (13) for pressing the lock (13) and the terminal fitting (T) up into the first guiding surface (14a) to prevent shaking of the terminal fitting (T) in the cavity (12).
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: November 30, 2004
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Masaaki Tabata, Keigo Atsumi
  • Patent number: 6805564
    Abstract: A connector assembly has a split-type connector (10) configured for insertion into a receptacle (53) of a mating connector (50)i. The split-type connector (10) has a holder (11) and auxiliary connectors (28) that can be mounted in the holder (11). A retainer (34) is mountable in the holder (11) and can be moved from a first position where the auxiliary connectors (28) can be mounted in the holder (11) and a second position where the auxiliary connectors (28) are locked. The receptacle (53) has dovetail grooves (56) and the holder (11) has dovetail ribs (27) that engage to prevent the receptacle (53) from deforming away from the outer surface of a holder (11).
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: October 19, 2004
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
  • Publication number: 20040203287
    Abstract: A connector has a housing (20) with cavities (26) for receiving terminals (10). A lock (30) projects is provided in each cavity (26) and has a forwardly tapered locking surface (32) that is sloped to project more forward at the base than at the top. The connector also has a retainer (50) with a restricting plate (53) to prevent displacement of the locks (30) toward deformation spaces (36). Push-up protrusions (60) of the restricting plate (53) slip under the lower surfaces of the locks (30) as the retainer (50) is pushed towards a full locking position and push the locks (30) up towards cavities (26). A cam action of the sloped locking surfaces (32) pushes the female terminals (10) forward and against front walls (27).
    Type: Application
    Filed: April 13, 2004
    Publication date: October 14, 2004
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tomonari Itou, Keigo Atsumi, Atsushi Nishida, Masato Minakata
  • Patent number: 6764324
    Abstract: A lever-type connector assembly has mating female and male connectors (10, 50). The female connector (10) has a lever (40) with a cam plate (41) and a resilient lock (46) that is deformable within the plane of the cam plate (41). The resilient lock (46) engages a receiving portion (33A) on the female connector (10) for holding the lever (40) at an initial position. The connector (50) has an unlocking rib (55) that deforms the resilient lock (46) out of engagement with the receiving portion (33A). As a result, the lever (40) can rotate for connecting the connectors (10, 50). Since the resilient lock (46) deforms in the plane of the cam plate (41), there is no need to provide space for deformation of the resilient lock (46) along a thickness direction of the cam plate (41).
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: July 20, 2004
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
  • Patent number: 6733313
    Abstract: A lever (40) of a connector assembly is in the form of a single plate, and a resilient lock (48) for locking the lever (40) at a connection completing position and a finger placing portion (47B) used to rotate the lever (40) are adjacent to each other at one end of the lever (40). The resilient lock (48) extends along the plane of the lever (40) and is resiliently deformable along a direction normal to the plane. Thus, a larger area can be secured for an unlocking portion (48B) of the resilient lock (48) without increasing the thickness of the lever (40), thereby providing good unlocking operational efficiency.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: May 11, 2004
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
  • Publication number: 20040082219
    Abstract: A connector has a housing (11) with a cavity (12) for receiving a rectangular tube (Ta) of a terminal fitting (T). A lock (13) is formed on a surface of the cavity (12) for engaging the terminal fitting (T). The cavity (11) has a first guiding surface (14a) at a corner adjacent a surface of the cavity (12) opposed to the lock (13) for narrowing the width of a cavity (12). A retainer (21) engages a lower surface of the lock (13) for pressing the lock (13) and the terminal fitting (T) up into the first guiding surface (14a) to prevent shaking of the terminal fitting (T) in the cavity (12).
    Type: Application
    Filed: October 22, 2003
    Publication date: April 29, 2004
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Masaaki Tabata, Keigo Atsumi
  • Patent number: 6659811
    Abstract: A connector has a housing main body (10) with a terminal accommodating portion (11) for accommodating terminal fittings (13). A holder (50) for supporting front ends of the terminal fittings (13) is assembled to the terminal accommodating portion (11), and a retainer (40) for locking the terminal fittings (13) is mounted laterally into the terminal accommodating portion (11). A detecting portion (45) is retracted from an opening (62) formed in the holder (50) when the retainer (40) is at a partial locking position, but is visible at the opening (62) when the retainer (40) reaches a full locking position.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: December 9, 2003
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Michiaki Okamoto, Toshifumi Ichio, Keigo Atsumi, Masanori Wakui
  • Publication number: 20030166351
    Abstract: A lever (40) of a connector assembly is in the form of a single plate, and a resilient lock (48) for locking the lever (40) at a connection completing position and a finger placing portion (47B) used to rotate the lever (40) are adjacent to each other at one end of the lever (40). The resilient lock (48) extends along the plane of the lever (40) and is resiliently deformable along a direction normal to the plane. Thus, a larger area can be secured for an unlocking portion (48B) of the resilient lock (48) without increasing the thickness of the lever (40), thereby providing good unlocking operational efficiency.
    Type: Application
    Filed: February 26, 2003
    Publication date: September 4, 2003
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
  • Publication number: 20030162426
    Abstract: A lever-type connector (10) has a frame-shaped holder (11) for accommodating auxiliary connectors (24). A lever (40) is mounted on the holder (11) and is adapted to connect the lever-type connector (10) and a male connector (50) by cam action effected as the lever (40) is rotated. The lever (40) extends along only one wall surface of the holder (11). Thus, wires (27) and the lever (40) are unlikely to interfere with each other. Further, the lever (40) is accommodated in a recess (16) of the holder (11) and is held from opposite sides along a direction of the rotational axis. Thus, the lever (40) will not deform along the direction of the rotational axis and will not detach from the holder (11).
    Type: Application
    Filed: February 26, 2003
    Publication date: August 28, 2003
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
  • Publication number: 20030162427
    Abstract: A lever-type connector assembly has mating female and male connectors (10, 50). The female connector (10) has a lever (40) with a cam plate (41) and a resilient lock (46) that is deformable within the plane of the cam plate (41). The resilient lock (46) engages a receiving portion (33A) on the female connector (10) for holding the lever (40) at an initial position. The connector (50) has an unlocking rib (55) that deforms the resilient lock (46) out of engagement with the receiving portion (33A). As a result, the lever (40) can rotate for connecting the connectors (10, 50). Since the resilient lock (46) deforms in the plane of the cam plate (41), there is no need to provide space for deformation of the resilient lock (46) along a thickness direction of the cam plate (41).
    Type: Application
    Filed: February 26, 2003
    Publication date: August 28, 2003
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
  • Publication number: 20030162413
    Abstract: A connector assembly has a split-type connector (10) configured for insertion into a receptacle (53) of a mating connector (50). The split-type connector (10) has a holder (11) and auxiliary connectors (28) that can be mounted in the holder (11). A retainer (34) is mountable in the holder (11) and can be moved from a first position where the auxiliary connectors (28) can be mounted in the holder (11) and a second position where the auxiliary connectors (28) are locked. The receptacle (53) has dovetail grooves (56) and the holder (11) has dovetail ribs (27) that engage to prevent the receptacle (53) from deforming away from the outer surface of a holder (11).
    Type: Application
    Filed: February 26, 2003
    Publication date: August 28, 2003
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
  • Publication number: 20030162428
    Abstract: A split-type connector (10) has a holder (11) and auxiliary connectors (28) that can be mounted in the holder (11). A retainer (34) is mountable in the holder (11) and can be moved from a first position where the auxiliary connectors (28) can be mounted in the holder (11) and a second position where the auxiliary connectors (28) are locked. The retainer (34) has returning slanted surfaces (40) for pushing the retainer (34) from the second position to the first position in the process of mounting auxiliary connectors (28) into the holder (11).
    Type: Application
    Filed: February 26, 2003
    Publication date: August 28, 2003
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
  • Publication number: 20030087562
    Abstract: A connector has a housing main body (10) with a terminal accommodating portion (11) for accommodating terminal fittings (13). A holder (50) for supporting front ends of the terminal fittings (13) is assembled to the terminal accommodating portion (11), and a retainer (40) for locking the terminal fittings (13) is mounted laterally into the terminal accommodating portion (11). A detecting portion (45) is retracted from an opening (62) formed in the holder (50) when the retainer (40) is at a partial locking position, but is visible at the opening (62) when the retainer (40) reaches a full locking position.
    Type: Application
    Filed: April 1, 2002
    Publication date: May 8, 2003
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Michiaki Okamoto, Toshifumi Ichio, Keigo Atsumi, Masanori Wakui
  • Patent number: 6176731
    Abstract: A blade type terminal fitting (7) has blades (14A, 14B) which cut through wire insulation (16) to contact a wire core (17). To prevent widening of the blades (14A, 14B) as the wire is pressed in, a jig (18) includes pressing members (20) to prevent outward movement of the blades (14A, 14B). A more secure electrical connection is obtained.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: January 23, 2001
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Masahiko Aoyama, Mitsugu Furutani, Hitoshi Okumura, Keigo Atsumi
  • Patent number: 6113417
    Abstract: To increase the accuracy of the slot dimension of a pressure contact terminal fitting, a pair of anteriorly and posteriorly located pressure contact blades 22 and 23, engage protrusions 26 and 27 formed in the terminal base. The position of the blades 22 and 23 is thus maintained against deformation loads.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: September 5, 2000
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Mitsugu Furutani, Keigo Atsumi, Masahiko Aoyama, Hitoshi Okumura