Invention Grant
- Patent Title: Chair and backrest for chair
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Application No.: US15315178Application Date: 2015-06-03
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Publication No.: US10368645B2Publication Date: 2019-08-06
- Inventor: Yuuichirou Takagi , Alexander Hurford
- Applicant: OKAMURA CORPORATION
- Applicant Address: JP Kanagawa
- Assignee: OKAMURA CORPORATION
- Current Assignee: OKAMURA CORPORATION
- Current Assignee Address: JP Kanagawa
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP2014-116826 20140605; JP2014-210862 20141015
- International Application: PCT/JP2015/066017 WO 20150603
- International Announcement: WO2015/186731 WO 20151210
- Main IPC: A47C7/40
- IPC: A47C7/40 ; A47C7/42 ; A47C7/00

Abstract:
In a chair (1) and a backrest (30) for the chair of the invention, thin back plate extension parts (51) that are continuous with a front surface of a back plate part (31), thinned sections being formed in outside portions, in a width direction of the backrest, on the rear surface side; and reinforcing ribs (52) that protrude from inside end parts of the back plate extension parts (51) in the width direction of the backrest to a rear side are provided in regions of side edge support parts (32) above parts where fitting holes (33) are formed. The reinforcing ribs (52) extend substantially in an upward-downward direction, gradually increase in cross-sectional area on a bottom end side, are connected to the parts where the fitting holes (33) are formed. Additionally, a chair (1a, 101, 201) and a backrest (30) for the chair of the invention are provided with a plate-shaped back plate part (31) that receives a seated person's load, and a pair of side edge support parts (32) that are formed integrally with a pair of facing opposite sides of the back plate part (31) and function as strengthening members. A plurality of openings (34) for facilitating deformation of the back plate part (31) are formed in the back plate part (31). A curved part (35) that is curved toward an opposite back plate side extends from one end side of the back plate part (31). The openings (34) of the back plate part (31) formed in the vicinity of the curved part (35) are formed in the shape of an elongated hole in the extending direction of the side edge support parts (32), and are formed at least in a range covering the curved part (35).
Public/Granted literature
- US20170196360A1 CHAIR AND BACKREST FOR CHAIR Public/Granted day:2017-07-13
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