Supports – Easel; book – copy or music score holder – With adjustable inclination
Patent
1994-06-06
1996-03-12
Chin-Shue, Alvin C.
Supports
Easel; book, copy or music score holder
With adjustable inclination
248166, 248464, A47G 124
Patent
active
054979714
ABSTRACT:
A portable, collapsible bookstand to retain a book or sheets of paper in an upright position is described. The bookshelf is formed from a supporting shelf secured horizontally by two of three legs in a trigonal pyramidal arrangement. The three legs are securely joined at their tops by an elastic loop firmly wound about catches fixed to each leg. The rear leg has partial mobility perpendicular to the shelf so that reading material can be reclined to a desired position. The material at the bottom of each leg has a high coefficient of friction so that the bookstand does not slide on a supporting surface. A small gap between the forelegs and the supporting shelf secures materials placed on the bookshelf. When not in use, the shelf can be disengaged from one front leg and pivoted about its point of attachment to the other front leg, bringing it parallel to the leg to which it is attached. The bookstand can now be collapsed so that the three legs are side by side and parallel to the disengaged shelf.
REFERENCES:
patent: 260068 (1882-06-01), Van Kirk
patent: D282324 (1986-01-01), Ellis
patent: 308535 (1884-11-01), Vail
patent: 589464 (1897-09-01), Church
patent: 881766 (1906-09-01), Bing
patent: 1459104 (1923-06-01), Johnson
patent: 1581742 (1926-04-01), Johnson
patent: 1824165 (1931-08-01), Miller
patent: 2376452 (1945-05-01), Rossman
patent: 2973933 (1961-03-01), Howell
patent: 3145014 (1964-08-01), Neuwirth
patent: 3201080 (1965-08-01), Rose
patent: 4553728 (1985-11-01), Corsello
patent: 4826125 (1989-05-01), Kelley
patent: 4880327 (1989-01-01), Sanabria
patent: 4886231 (1989-12-01), Doerksen
patent: 5016852 (1991-05-01), Herendeen
patent: 5317826 (1994-06-01), Underwood
Chan Korie H.
Chin-Shue Alvin C.
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