Horizontally supported planar surfaces – Industrial platform – Formed from folded semirigid material
Patent
1977-04-07
1978-11-07
Skogquist, Harland S.
Horizontally supported planar surfaces
Industrial platform
Formed from folded semirigid material
35 77, 108 49, D 6138, G09B 120
Patent
active
041238524
ABSTRACT:
A teaching device is disclosed which permits the utilization of both the visual and tactile senses during the learning process. The device includes a main frame, one end of which carries information conveying means consisting of a rotatable roller having removable covers attached thereto which carry raised figures or symbols such as numbers or letters, for example,. The opposed end of the frame slants away from the first end and carries a work surface suitable for writing purposes. The device also includes a support member which is essentially U-shaped in cross section and is capable of receiving the main frame on its top, whereby the overall device may be utilized as a lap desk, for example.
REFERENCES:
patent: D210638 (1968-03-01), Greenfield
patent: 776355 (1904-11-01), Selander
patent: 1770955 (1930-07-01), Storm
patent: 2741869 (1956-04-01), Aibel
patent: 3168061 (1965-02-01), Bedol
patent: 3263347 (1966-08-01), McCutcheon
patent: 3414987 (1968-12-01), Lindenauer
patent: 3507056 (1970-04-01), Finkel
patent: 3592506 (1971-07-01), Breslow
patent: 3597854 (1971-08-01), Trimmer
"Play Table" p. 354 Spiegel 1962 Xmas book.
AFB Standard Watches, pp. 30, 31, Aids and Appliances Catalog , Jul. 1972-June 1973, American Foundation For The Blind.
Skogquist Harland S.
Taylor Reese
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