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).
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Patent number: 6948986Abstract: 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: GrantFiled: June 24, 2004Date of Patent: September 27, 2005Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Eiji Kojima, Keigo Atsumi, Atsushi Nishida, Masato Minakata
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Patent number: 6948978Abstract: 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: GrantFiled: April 13, 2004Date of Patent: September 27, 2005Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Tomonari Itou, Keigo Atsumi, Atsushi Nishida, Masato Minakata
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Publication number: 20050009412Abstract: 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: ApplicationFiled: June 24, 2004Publication date: January 13, 2005Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Eiji Kojima, Keigo Atsumi, Atsushi Nishida, Masato Minakata
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Patent number: 6837753Abstract: 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: GrantFiled: February 26, 2003Date of Patent: January 4, 2005Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
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Patent number: 6827593Abstract: 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: GrantFiled: February 26, 2003Date of Patent: December 7, 2004Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
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Patent number: 6824428Abstract: 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: GrantFiled: October 22, 2003Date of Patent: November 30, 2004Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Masaaki Tabata, Keigo Atsumi
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Patent number: 6805564Abstract: 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: GrantFiled: February 26, 2003Date of Patent: October 19, 2004Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
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Publication number: 20040203287Abstract: 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: ApplicationFiled: April 13, 2004Publication date: October 14, 2004Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Tomonari Itou, Keigo Atsumi, Atsushi Nishida, Masato Minakata
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Patent number: 6764324Abstract: 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: GrantFiled: February 26, 2003Date of Patent: July 20, 2004Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
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Patent number: 6733313Abstract: 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: GrantFiled: February 26, 2003Date of Patent: May 11, 2004Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
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Publication number: 20040082219Abstract: 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: ApplicationFiled: October 22, 2003Publication date: April 29, 2004Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Masaaki Tabata, Keigo Atsumi
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Patent number: 6659811Abstract: 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: GrantFiled: April 1, 2002Date of Patent: December 9, 2003Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Michiaki Okamoto, Toshifumi Ichio, Keigo Atsumi, Masanori Wakui
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Publication number: 20030166351Abstract: 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: ApplicationFiled: February 26, 2003Publication date: September 4, 2003Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
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Publication number: 20030162426Abstract: 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: ApplicationFiled: February 26, 2003Publication date: August 28, 2003Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Keigo Atsumi, Masanori Wakui
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Publication number: 20030162427Abstract: 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: ApplicationFiled: February 26, 2003Publication date: August 28, 2003Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
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Publication number: 20030162413Abstract: 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: ApplicationFiled: February 26, 2003Publication date: August 28, 2003Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
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Publication number: 20030162428Abstract: 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: ApplicationFiled: February 26, 2003Publication date: August 28, 2003Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Tetsuya Shinozaki, Masashi Saito, Keigo Atsumi, Masanori Wakui
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Publication number: 20030087562Abstract: 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: ApplicationFiled: April 1, 2002Publication date: May 8, 2003Applicant: Sumitomo Wiring Systems, Ltd.Inventors: Michiaki Okamoto, Toshifumi Ichio, Keigo Atsumi, Masanori Wakui
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Patent number: 6176731Abstract: 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: GrantFiled: May 19, 1998Date of Patent: January 23, 2001Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Masahiko Aoyama, Mitsugu Furutani, Hitoshi Okumura, Keigo Atsumi
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Patent number: 6113417Abstract: 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: GrantFiled: December 2, 1997Date of Patent: September 5, 2000Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Mitsugu Furutani, Keigo Atsumi, Masahiko Aoyama, Hitoshi Okumura