Extension tube for concrete floor boxes

专利名称：Extension tube for concrete floor boxes发明人：Robert K. Jolly申请号：US12322127申请日：20090129公开号：US08022315B2公开日：20110920

专利附图：

摘要：An extension tube for an electrical floor box that includes a first section and asecond section. Each section has a curved wall with an interior surface and an exteriorsurface, a top portion, a bottom portion and first and second side edges. The bottomportion is offset radially outwardly from the top portion by a ledge and the side edges

have connecting mechanisms which join the two sections together to form the extensiontube. The extension tube includes a top portion and a belled bottom portion which areformed so that the top portion of one extension tube can be inserted into the bottomportion of another extension tube.

申请人：Robert K. Jolly

地址：Cordova TN US

国籍：US

代理机构：Hoffmann & Baron, LLP

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