Patents Assigned to Itoki Co., Ltd.
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Patent number: 5475376Abstract: In a safety-deposit box system including a safety-deposit box, a system controller, and a safety-deposit box controller, a multi-function key is used. The safety-deposit box has a lock and the multi-function key has a metal portion and an electronic memory. Information electronically stored on the electronic memory is read by a reception device and sent to a determination device in the system controller. The determination device compares the sent information with information prerecorded in an electronic memory in the system controller. When the two sets of information agree, the system controller outputs a signal to the safety-deposit box controller. After receiving the signal, the safety-deposit box controller checks mechanical appropriateness of the metal key portion and, if mechanically appropriate, unlocks the lock.Type: GrantFiled: February 24, 1995Date of Patent: December 12, 1995Assignee: Itoki Co., Ltd.Inventors: Masaru Chikamitue, Kengo Ishibashi, Hiroshi Ito, Kentaro Adachi
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Patent number: 5338099Abstract: A shell for a chair in which a bottom shell structure and a backrest shell structure are connected to supporting frame members. The bottom shell structure has a bottom portion and a partial backrest portion that are connected by a curved portion with plural slots. Sideways notches are connected to the extreme left and right slots and extend toward the left and right edges of the shell structure. The edges of the shell adjacent the notches are curved into a U shape. This construction increases the flexibility of the curved portion, while maintaining a significant portion of the unslotted material strength. A separate shell structure is attached to supporting bars and forms the remainder of the backrest support. This separate shell structure has a jagged cross sectional shape where substantially parallel projections and recesses form grooves which extend the length of the backrest shell.Type: GrantFiled: August 9, 1993Date of Patent: August 16, 1994Assignee: Itoki Co., Ltd.Inventors: Yuji Ishi, Toru Nagao, Harumatsu Sato
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Patent number: 5314240Abstract: A shell for a chair in which a bottom shell structure and a backrest shell structure are connected to supporting frame members such that when a light load is applied to the separate backrest shell the backrest shell will bend to accommodate the load, whereas when a heavy load is applied to the backrest shell the backrest bends and the supporting bars rock backwards. The bottom shell structure has a bottom portion and a partial backrest portion which are integrally formed on the same material and are connected by a curved portion with plural slots. Sideways notches are connected to the extreme left and right slots and extend toward the left and right edges of the shell structure. The edges of the shell adjacent the notches are curved into a U shape. This construction increases the flexibility of the curved portion, while maintaining a significant portion of the unslotted material strength. A separate shell structure is attached to supporting bars and forms the remainder of the backrest support.Type: GrantFiled: December 27, 1991Date of Patent: May 24, 1994Assignee: Itoki Co., Ltd.Inventors: Yuji Ishi, Toru Nagao, Harumatsu Sato
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Patent number: 5238294Abstract: There is provided an interlocking supporting mechanism for supporting the seat and seat back of a chair, particularly an office chair. In the supporting mechanism a link system is utilized to interlock the seat with the seat back, so that the chair is capable of smoothly moving as a seated person moves.The front portion of a lever member is pivotally connected to the front portion of a frame member which is supported by a fixing member and which extends toward the front portion of the seat. The lever member is attached, with the aid of horizontal shafts on the right-hand and left-hand sides of the seat, to the lower portions of back supporting bars. A spring member is provided between the frame member and the lever member so that the lever member is rocked on the horizontal shafts. A member for receiving the seat includes a front seat-receiving member and a back seat-receiving member.Type: GrantFiled: October 3, 1991Date of Patent: August 24, 1993Assignee: Itoki Co., Ltd.Inventors: Yuji Ishi, Toru Nagao, Hironaga Obata, Yasuo Uematsu, Tetsuya Kano
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Patent number: D510492Type: GrantFiled: March 17, 2004Date of Patent: October 11, 2005Assignees: Itoki Co., Ltd., Itoki Crebio CorporationInventors: Tamio Sakurai, Koichiro Hayashi
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Patent number: D512251Type: GrantFiled: March 17, 2004Date of Patent: December 6, 2005Assignees: Itoki Co., Ltd., Itoki Crebio CorporationInventors: Tamio Sakurai, Koichiro Hayashi
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Patent number: D515831Type: GrantFiled: March 8, 2005Date of Patent: February 28, 2006Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D332535Type: GrantFiled: December 21, 1990Date of Patent: January 19, 1993Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D332536Type: GrantFiled: December 21, 1990Date of Patent: January 19, 1993Assignee: 501 Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D332537Type: GrantFiled: December 21, 1990Date of Patent: January 19, 1993Assignee: 501 Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D333053Type: GrantFiled: December 21, 1990Date of Patent: February 9, 1993Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D333228Type: GrantFiled: December 21, 1990Date of Patent: February 16, 1993Assignee: Itoki Co. Ltd.Inventor: Isao Hosoe
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Patent number: D346909Type: GrantFiled: September 23, 1991Date of Patent: May 17, 1994Assignee: Itoki, Co., Ltd.Inventors: Hironaga Obata, Tetsuya Kano, Yuji Ishi, Toru Nagao
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Patent number: D348571Type: GrantFiled: September 23, 1991Date of Patent: July 12, 1994Assignee: Itoki Co., Ltd.Inventors: Hironaga Obata, Tetsuya Kano, Yuji Ishi, Toru Nagao
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Patent number: D352194Type: GrantFiled: July 23, 1993Date of Patent: November 8, 1994Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D352408Type: GrantFiled: July 23, 1993Date of Patent: November 15, 1994Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D352409Type: GrantFiled: July 23, 1993Date of Patent: November 15, 1994Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D352851Type: GrantFiled: July 23, 1993Date of Patent: November 29, 1994Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D352852Type: GrantFiled: July 23, 1993Date of Patent: November 29, 1994Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe
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Patent number: D352853Type: GrantFiled: July 23, 1993Date of Patent: November 29, 1994Assignee: Itoki Co., Ltd.Inventor: Isao Hosoe