Patents Assigned to Togo Seisakusyo Corporation
  • Publication number: 20180372163
    Abstract: A tolerance ring includes a cylindrical main body, which has an inner circumferential surface and an outer circumferential surface, and a plurality of protuberances, which protrudes outward in a radial direction from the inner circumferential surface of the main body. The main body includes a recess that extends from an end of the main body to at least one of the protuberances and communicates with an inside of the at least one of the protuberances.
    Type: Application
    Filed: July 26, 2016
    Publication date: December 27, 2018
    Applicants: TOGO SEISAKUSYO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji NAKAMURA, Hirofumi KURACHI, Akitaka ICHIKAWA
  • Publication number: 20180372164
    Abstract: A shaft coupling structure includes a shaft, a sleeve, into which the shaft is inserted, and a tolerance ring. The tolerance ring includes a cylindrical main body and a plurality of protuberances, which protrudes outward in a radial direction from an inner circumferential surface of the main body. The tolerance ring is fitted between an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve. A communication passage that connects an inside and an outside of each protuberance is provided between the outer circumferential surface of the shaft and the main body.
    Type: Application
    Filed: July 26, 2016
    Publication date: December 27, 2018
    Applicants: TOGO SEISAKUSYO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji NAKAMURA, Hirofumi KURACHI, Akitaka ICHIKAWA
  • Patent number: 10081468
    Abstract: A purpose is to render a gripping operation of grip tabs more stable. A hose clamp includes a clamp body formed by bending a plate spring into an annular shape while two ends of the plate spring are caused to cross each other on a circumferential plane and grip tabs formed to be raised radially outward from both ends of the clamp body, respectively. An expanded-diameter state of the clamp body is retained when a locking claw is locked by a catch. The clamp body is released from the expanded-diameter state when a gripping operation is further carried out in this state. The second grip tab has a distal end formed to be wider than a distal end of the first grip tab. The distal ends of the grip tabs are bent in respective directions in which the distal ends depart from each other with respect to a thicknesswise direction, thereby serving as bent portions for the gripping operation, respectively.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: September 25, 2018
    Assignee: TOGO SEISAKUSYO CORPORATION
    Inventor: Yuji Nakamura
  • Patent number: 10005600
    Abstract: A purpose is to increase a clamping force without increase in a plate thickness. A wide region (X1) is formed at one of lengthwise sides to be relatively wider and has portions bifurcated by an opening (2). A narrow region (X2) is formed at the other lengthwise side to be relatively narrower and has a portion passed between the bifurcated portions. Both widthwise side edges of the wide region (X1) are formed with respective flanges (6) by bending and a bead (7) is formed on a widthwise middle of the narrow region (X2). The flanges (6) and the bead (7) are set so that a change in a section modulus is substantially symmetric about a Y axis that is a lengthwise central axis of the hose clamp.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: June 26, 2018
    Assignee: TOGO SEISAKUSYO CORPORATION
    Inventor: Yuji Nakamura
  • Patent number: 9920794
    Abstract: A torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body includes a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: March 20, 2018
    Assignees: JTEKT CORPORATION, TOGO SEISAKUSYO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshihiro Asakura, Masatoshi Fujimoto, Toshiaki Ogata, Yukihiko Kanayama, Hirotsune Suzuki, Yuji Nakamura, Yuzo Hirakawa, Kenji Hayashi, Hiroyuki Toyoda
  • Publication number: 20170334620
    Abstract: A purpose is to render a gripping operation of grip tabs more stable. A hose clamp includes a clamp body formed by bending a plate spring into an annular shape while two ends of the plate spring are caused to cross each other on a circumferential plane and grip tabs formed to be raised radially outward from both ends of the clamp body, respectively. An expanded-diameter state of the clamp body is retained when a locking claw is locked by a catch. The clamp body is released from the expanded-diameter state when a gripping operation is further carried out in this state. The second grip tab has a distal end formed to be wider than a distal end of the first grip tab. The distal ends of the grip tabs are bent in respective directions in which the distal ends depart from each other with respect to a thicknesswise direction, thereby serving as bent portions for the gripping operation, respectively.
    Type: Application
    Filed: August 10, 2017
    Publication date: November 23, 2017
    Applicant: TOGO SEISAKUSYO CORPORATION
    Inventor: Yuji NAKAMURA
  • Patent number: 9764883
    Abstract: A hose clamp includes a clamp body formed by bending a plate spring into an annular shape while two ends of the plate spring are caused to cross, grip tabs formed to be raised radially outward from both ends of the clamp body, respectively and an expanded-diameter state retainer formed integrally on the clamp body or the tabs and capable of retaining an expanded-diameter state of the clamp body and releasing the clamp body from the expanded-diameter state by relative movement of both tabs in an axial direction of the clamp body with a gripping operation applied to both tabs. The tabs have respective distal ends, one of which has a larger width than the other. The distal ends are bent circumferentially outward into bent portions spaced from each other. The bent portions are insertable into positioning recesses formed in opposite surfaces of a gripping tool, respectively.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 19, 2017
    Assignee: TOGO SEISAKUSYO CORPORATION
    Inventor: Yuji Nakamura
  • Patent number: 9546750
    Abstract: The pinching operation is facilitated. A hose clamp (H1) is formed by bending a strip-like plate material (1) into a ring-like configuration, and includes a first end portion (5) having a first pinching operation surface (9), and a second end portion (6) having a second pinching operation surface (15). A through-hole (7) is open near the center in the longitudinal direction of the first pinching operation surface (9). At the time of bending into ring-like configuration, expansion regions (19) arranged at both side portions in the width direction of the second pinching operation surface (15) are folded at folding edges (20) with respect to a proximal region (18), whereby the second pinching operation surface (15) is narrowed in the width direction and can enter the through-hole (7). After bending into ring-like configuration, the expansion regions (19) are unfolded at the folding edges (20) and regain a widened state.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: January 17, 2017
    Assignee: TOGO SEISAKUSYO CORPORATION
    Inventor: Takehiko Ozawa
  • Patent number: 9447905
    Abstract: A pipe connector includes a connector body, a retainer having a pair of locking legs and a release operation portion, and a checker. The connector body has an insertion hole into which a pipe is insertable. The locking legs are deformable to be spread and closed and are moved into the insertion hole. The release operation portion being operable to displace the locking legs in a direction such that the pipe is releasable from a retained state. The checker is formed separately from the retainer and lockable to the connector body and releasable from a locked state to be movable to a detection position when the pipe is inserted into the insertion hole. The checker is formed with pressing pieces located rearward relative to the locking legs when the checker assumes the detection position, to thereby prevent the locking legs from being flexed rearward.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: September 20, 2016
    Assignee: TOGO SEISAKUSYO CORPORATION
    Inventor: Takanori Nagaya
  • Publication number: 20160264327
    Abstract: A purpose is to render a gripping operation of grip tabs more stable. A hose clamp (1) includes a clamp body (3) formed by bending a plate spring into an annular shape while two ends of the plate spring are caused to cross each other on a circumferential plane and grip tabs (51, 52) formed to be raised radially outward from both ends of the clamp body (3), respectively. An expanded-diameter state of the clamp body (3) is retained when a locking claw (34) is locked by a catch (35). The clamp body (3) is released from the expanded-diameter state when a gripping operation is further carried out in this state. The second grip tab (52) has a distal end formed to be wider than a distal end of the first grip tab (51). The distal ends of the grip tabs (51, 52) are bent in respective directions in which the distal ends depart from each other with respect to a thicknesswise direction, thereby serving as bent portions (61, 62) for the gripping operation, respectively.
    Type: Application
    Filed: October 31, 2013
    Publication date: September 15, 2016
    Applicant: TOGO SEISAKUSYO CORPORATION
    Inventor: Yuji NAKAMURA
  • Publication number: 20160122099
    Abstract: A purpose is to increase a clamping force without increase in a plate thickness. A wide region (X1) is formed at one of lengthwise sides to be relatively wider and has portions bifurcated by an opening (2). A narrow region (X2) is formed at the other lengthwise side to be relatively narrower and has a portion passed between the bifurcated portions. Both widthwise side edges of the wide region (X1) are formed with respective flanges (6) by bending and a bead (7) is formed on a widthwise middle of the narrow region (X2). The flanges (6) and the bead (7) are set so that a change in a section modulus is substantially symmetric about a Y axis that is a lengthwise central axis of the hose clamp.
    Type: Application
    Filed: May 19, 2014
    Publication date: May 5, 2016
    Applicant: TOGO SEISAKUSYO CORPORATION
    Inventor: Yuji NAKAMURA
  • Patent number: 9239124
    Abstract: A hose clamp for preventing a leak during tightening of a hose includes a clamp body of a strip-shaped leaf spring material with an annular shape, and a pair of operation pieces. The clamp body maintained in a diameter expansion state by a locking claw of the operation piece engaged with an engagement concavity of the other operation piece. The engagement released by bringing the operation piece close to the other operation piece and moving the operation piece in the opposing direction in an axial direction of the clamp body, whereby reducing the clamp body diameter. An expansion restricting piece restricts divergence of both the operation pieces in opposite directions in the axial direction of the clamp body. Further, a tilt prevention section which prevents the clamp body from being obliquely assembled to a hose during tightening of the hose is provided.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: January 19, 2016
    Assignee: Togo Seisakusyo Corporation
    Inventor: Yuji Nakamura
  • Patent number: 9234555
    Abstract: A spring seat member includes a seat body having a seat portion and a shaft portion extending from the seat portion, and attachment members attached to the seat body. The spring seat member is attached to a coil spring in a state where the attachment members are attached to the seat body. The shaft portion has a groove on the outer periphery thereof that extends in the circumferential direction. The attachment members are provided with engaging portions that engage with the groove of the shaft portion. The engaging portions are selectively and elastically deformable inward or outward in the radial direction of the shaft portion. The groove has an inner wall facing the seat portion. The inner wall has an inclined surface. The inclined surface is inclined radially outward of the shaft portion as the distance from the seat portion in an extending direction of the shaft portion increases.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: January 12, 2016
    Assignee: Togo Seisakusyo Corporation
    Inventor: Yuji Nakamura
  • Patent number: 9147506
    Abstract: A bus bar includes a body having at least one bent portion and a plate-shaped or bar-like terminal located on at least one end of the body and formed of a material identical with a material of the body integrally with the body in a seamless manner. The terminal is formed by pressurizing the end of the body thereby to be plate-shaped or bar-like and having a higher hardness than the bent portion. The body is solid and linear in shape. The terminal is formed so that its profile has a required predetermined size by adjusting an applied pressure value.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: September 29, 2015
    Assignee: TOGO SEISAKUSYO CORPORATION
    Inventors: Hiroki Okada, Masayuki Sato, Toshimitsu Kamiya
  • Patent number: 9109632
    Abstract: This torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body comprises a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: August 18, 2015
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, TOGO SEISAKUSYO CORPORATION
    Inventors: Toshihiro Asakura, Masatoshi Fujimoto, Toshiaki Ogata, Yukihiko Kanayama, Hirotsune Suzuki, Yuji Nakamura, Yuzo Hirakawa, Kenji Hayashi, Hiroyuki Toyoda
  • Publication number: 20150159793
    Abstract: Preventing a checker from becoming waste even after fulfillment of a detecting function and stably maintaining a retainer in a locking state. A pipe connector includes a connector body (1), a retainer (2) preventing a pipe from pulled from the connector body (1) and a checker (3) detecting normal insertion of the pipe. The checker (3) is formed with front legs (37). When the pipe (P) has been inserted into a normal position, the front legs (37) are spread by a flange (10) of the pipe (P) with the result that the checker (3) is released from the lock to the connector body (1). Consequently, the checker (3) is movable from a preliminary holding position to a detection position by pressing a cover (34). Locking legs (26) are spread when a release operation portion (28) of the retainer (2) has been pressed, so that the pipe (P) is allowed to be pulled from the connector (1).
    Type: Application
    Filed: June 8, 2012
    Publication date: June 11, 2015
    Applicant: TOGO SEISAKUSYO CORPORATION
    Inventor: Takanori Nagaya
  • Patent number: 8931143
    Abstract: A hose clamp for preventing a leak during tightening of a hose includes a clamp body with a strip-shaped leaf spring having an annular shape, and a pair of operation pieces. The clamp body maintained in a diameter expansion state by a locking claw of the operation piece engaged with an engagement concavity of the operation piece of the clamp body. The locking claw is released by bringing the operation piece on one side close to the operation piece on the other side and moving the operation piece on one side with respect to the operation piece on the other side in the opposing direction in an axial direction of the clamp body, reducing the clamp body in diameter. A leak prevention piece presses a hose during tightening of the hose at an end portion of the operation piece on the other side of the clamp body.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: January 13, 2015
    Assignee: Togo Seisakusyo Corporation
    Inventor: Yuji Nakamura
  • Patent number: 8925974
    Abstract: A connector has a pivot shaft extending axially between a pair of flanges of a connector body. The retainer includes a bearing portion at one end, with an expandable insertion slot engageable with the pivot shaft such that the retainer pivots about the pivot shaft. The retainer has a temporary engagement position where a pipe can be inserted and removed and a regular engagement position where a bulge portion of the pipe is engaged preventing the pipe from being removed. A stopper claw formed on an opening edge of the insertion slot contacts with a contact surface, preventing the connector body from pivoting beyond the temporary engagement position. This prevents a condition where the retainer further pivots past the temporary engagement position which can cause the insertion slot to expand and the retainer separating from the pivot shaft.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: January 6, 2015
    Assignee: Togo Seisakusyo Corporation
    Inventors: Takanori Nagaya, Kenji Tozaki, Morio Narita
  • Publication number: 20140331458
    Abstract: The pinching operation is facilitated. A hose clamp (H1) is formed by bending a strip-like plate material (1) into a ring-like configuration, and includes a first end portion (5) having a first pinching operation surface (9), and a second end portion (6) having a second pinching operation surface (15). A through-hole (7) is open near the center in the longitudinal direction of the first pinching operation surface (9). At the time of bending into ring-like configuration, expansion regions (19) arranged at both side portions in the width direction of the second pinching operation surface (15) are folded at folding edges (20) with respect to a proximal region (18), whereby the second pinching operation surface (15) is narrowed in the width direction and can enter the through-hole (7). After bending into ring-like configuration, the expansion regions (19) are unfolded at the folding edges (20) and regain a widened state.
    Type: Application
    Filed: February 7, 2012
    Publication date: November 13, 2014
    Applicant: TOGO SEISAKUSYO CORPORATION
    Inventor: Takehiko Ozawa
  • Patent number: 8850664
    Abstract: A hose clamp includes a body elastically deformable between a closed-diameter state and an opened-diameter state, a first grip piece, a second grip piece, a lock portion located on either the first or second grip piece, a lock receiving portion located on the other grip piece side and elastically displaced together with the lock portion when the grip pieces are caused to come close to each other, thereby being locked to the lock portion by a subsequent return operation. The lock receiving portion holds the body in the opened-diameter state when in a locked state, and a restricting portion is capable of restricting displacement of both grip pieces in reverse of the direction of the elastic displacement. Either the first or second grip piece formed with the restricting portion has a distal end located lower than a distal end of the other grip piece when the body is in the closed-diameter state.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: October 7, 2014
    Assignee: Togo Seisakusyo Corporation
    Inventor: Yuji Nakamura