发明名称 Adjustable viewing screen housing and display device
摘要 Viewing screen and display apparatus including a housing for concealing the viewing screen when not in use, and a lifting assembly having a pair of lifting arms mounted slidably on a pair of tracks inside the housing and being tiltable outwardly. When raising of the viewing screen is desired, the viewing screen casing is tilted outwardly and a cable is pulled to lift the viewing screen casing to a desired height. The cable may be locked in any suitable position to keep the screen casing in a suitable elevation. The viewing screen, which nornally is rolled up within the casing, includes a magnetic strip which can be used to retain the viewing screen in a proper extended position for use.
申请公布号 US5140461(A) 申请公布日期 1992.08.18
申请号 US19910685140 申请日期 1991.04.15
申请人 KRAPF BUSINESS SYSTEMS, INC. 发明人 BLOOD, ROBERT J.;KRAPF, WALLACE A.
分类号 G03B21/58 主分类号 G03B21/58
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