| 摘要 |
A rocker spring unit having a top plate member with laterally projecting tab sections at its side edges for chair attachment and rocker spring seat-forming bosses at its front and rear edges is improved by providing the tab sections with at least one angled edge tapering from a widened reinforcing base therefor and by providing the rear bosses of the top plate member with inward and downward angled seat portions for straight line bottoming of the rocker springs.
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