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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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