发明名称 Projection screen stand
摘要 A stand, especially for a projection screen, having a plurality of spreadable legs, comprises a post which is preferably of telescoping type, at the lower end of which is provided a guide for the legs. The legs are pivotal on a member which can be slid along the post so that in an upper position the legs are swung inwardly to form a compact, readily transportable and easily stored unit with the post. When the pivot carrier is moved downwardly toward the guide, the legs are spread apart outwardly.
申请公布号 US4317553(A) 申请公布日期 1982.03.02
申请号 US19800154226 申请日期 1980.05.29
申请人 MECHANISCHE WEBEREI GMBH 发明人 MEINUNGER, HELMUT
分类号 G03B21/62;F16M11/38;G03B21/58;(IPC1-7):F16M11/38 主分类号 G03B21/62
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