Chair
AssigneeOkamura Corporation
InventorsSatoshi Nagamitsu, Hiroshi Masunaga
Life of this patent
Estimating the term…
Abstract
A chair comprises a back cushion material, a back plate and a back frame. The chair is used for looking at a display of a personal computer at suitable posture when it is reclined. The back plate comprises upper and lower shell which are connected by a flexible bent portion to each other. The back plate is mounted to the back frame at the upper end and a lower portion. When the chair is reclined, the upper shell is moved forwards and the lower shell is moved rearwards, so that an angle between the upper and lower shells may become smaller. Thus, the operator can take suitable posture for looking at the display any time.
Claims16
A chair which comprises:
- a back frame;
- and
- a back plate which comprises upper and lower shells, an upper end of the upper shell and a lower portion of the lower shell being mounted to an upper end and a lower portion of said back frame, said upper shell being connected to said lower shell by a flexible bent portion, backward force being applied to the back plate when the chair is reclined, to move the upper shell forwards and the lower shell backwards, whereby an angle between the upper and lower shells may become smaller to keep posture of a sitting person suitable.
A chair which comprises:
- a back frame;
- and
- a back plate which comprises an upper shell, an intermediate shell and a lower shell, said upper shell being connected to said intermediate shell by a first flexible U-shaped portion, said intermediate portion being connected to said lower shell by a second flexible U-shaped portion so that the shells may be elastically bent to change an arc to that of a smaller circle when backward force is applied, said upper shell having a horizontal shaft at an upper end, said back frame having a sliding groove at an upper end, said horizontal shaft being engaged in said sliding groove of the back frame so that said back plate may be slid with respect to said back frame.
Dependencies are inferred from the claim text.