Supports – Easel; book – copy or music score holder – Folded blank
Patent
1975-04-28
1976-11-09
Schultz, William H.
Supports
Easel; book, copy or music score holder
Folded blank
F21K 2021
Patent
active
039906698
ABSTRACT:
This invention relates to a light-weight collapsible support structure such as an easel which is self-sustaining in a predetermined configuration when unfolded and extended to sit upon a flat surface and presents three forwardly facing inclined panels, a central inclined panel flanked by two inclined side panels hingedly connected thereto to extend angularly outwardly therebeyond at each side to provide at least three surfaces in side by side relation and forming a partial enclosure, and upon which surfaces material may be mounted or supported, or such structure might also serve as a book support and cover, the three forwardly facing panels being supported rearwardly by an integral upstanding central plane hingedly connected only along its upper edge to the upper edge of the forwardly facing central inclined panel and tied or secured to the two inclined side panels to stabilize the configuration, all four panels being so hingedly connected together that the structure may upon being unfolded extend into its self-sustaining predetermined configuration and may be compactly folded up when collapsed for storage or for carrying.
REFERENCES:
patent: 433635 (1890-08-01), Turck
patent: 844066 (1907-02-01), Warren
patent: 1875460 (1932-09-01), Holy
patent: 2587316 (1952-02-01), Henry
patent: R21371 (1940-02-01), Barrett
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