Folding portable support stand

Supports – Easel; book – copy or music score holder – Folded blank

Patent

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Details

248174, 248460, 248464, A47B 9700

Patent

active

057554234

ABSTRACT:
A folding portable support stand suitable for a document or book. In the open configuration, the support stand is comprised of hinged triangular panels forming a tetrahedral stand assembly which support a pair of open covers forming an inclined angle with a horizontal surface such as a table. A prismatic ledge assembly is provided along the lower edge to retain the supported object on the covers and provide stiffness to the support stand in the open configuration. In the closed configuration, the support stand forms a flat rectangular shape with the covers on the outside surface and all other elements of the support stand folded within the covers. The support stand can be manufactured from a single sheet of material, and there are provisions for printed material on the surfaces of the support stand. Preferably, the support stand is manufactured of cardboard or paperboard, but alternatives include metal, plastic, and vinyl.

REFERENCES:
patent: 2165255 (1939-07-01), Hamilton
patent: 2375190 (1945-05-01), Botts
patent: 2587316 (1952-02-01), Henry
patent: 2640294 (1953-06-01), Walzak
patent: 2726835 (1955-12-01), Hummel
patent: 2844347 (1958-07-01), Henry
patent: 3410516 (1968-11-01), Criswell
patent: 4274616 (1981-06-01), Radtke
patent: 4318527 (1982-03-01), Smith
patent: 4607817 (1986-08-01), Aquino
patent: 4610416 (1986-09-01), Choi
patent: 4722504 (1988-02-01), Degenholtz
patent: 5080316 (1992-01-01), MacEwan

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