发明名称 Seating apparatus planar fold sling
摘要 An improved sling seat for a folding chair of the type having a frame constructed of a plurality of pivotally connected strut members supporting a sling seat. The sling seat improvement including a plurality of fold lines which radiate outwardly from a common point on the centerline of the sling. The fold lines permitting a thick semi-inflexible fabric sling seat of this pattern to fold, in a non-crumpled wrinkle-free form, with the frame, thereby allowing the frame to fold more compactly than previously with such fabric slings and allowing this sling seat to remain upon the folded frame for simple storage or transport.
申请公布号 US4807930(A) 申请公布日期 1989.02.28
申请号 US19870060625 申请日期 1987.06.11
申请人 HELFRICH, BOB 发明人 HELFRICH, BOB
分类号 A47C4/48;(IPC1-7):A47C4/28 主分类号 A47C4/48
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