发明名称 CEILING MOUNTING RING FOR SPEAKER CONES
摘要 A ceiling ring for mounting speakers in a ceiling. The ceiling ring is especially adapted for mounting a speaker from the bottom side of the ceiling after the ceiling has been constructed. The ceiling ring comprises a plaster ring inserted through the top of a hole in the ceiling and a closing plate which nests from below the ceiling within the plaster ring after the ceiling has been finished. The closing plate has an inwardly extending flange defining a central opening and opposite cutout portions which receive the speaker which is provided with a circular grill extending beyond the bottom edges of the speaker and which has a pair of flat sides which fit through the cutout opening in the rim-like flange of the closing plate when the speaker is turned perpendicularly on its side. The speaker, after it has been inserted, is righted and rests upon the flange by gravity. The closing plate can be clamped to the plaster ring by a workman who has availability through the central opening of the plaster ring to fasten connecting bolts extending from the plaster ring through slots in the closing plate.
申请公布号 US3666040(A) 申请公布日期 1972.05.30
申请号 USD3666040 申请日期 1970.07.06
申请人 CHAMOIS ELECTRONIC MFG. CO. INC. 发明人 HEINRICH J. JUNK
分类号 H04R1/02;(IPC1-7):G10K13/00;H04R1/28 主分类号 H04R1/02
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