Electrical metallic tube, coupling, and connector apparatus and method
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United States of America Patent
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Jun 7, 2005
Issued Date -
N/A
app pub date -
Aug 4, 2004
filing date -
Apr 28, 2003
priority date (Note) -
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Abstract
A labor saving system, method, and apparatus for connecting or coupling lengths of electric metallic tubing ('EMT'). The invention uses couplings/connectors that have barbs that are designed to engage corresponding indentations on EMT to ensure proper installation. In one aspect, the invention is an EMT having: an EMT inner surface forming an EMT cavity; an EMT outer surface; an EMT first end; and at least one indentation in the EMT outer surface at or near the EMT first end, the indentation adapted to receive a corresponding barb from a sleeve device. In another aspect, the invention is a linking device for EMT includes a first section having a link inner surface forming a link cavity adapted to receive an end of an EMT, a link outer surface, and at least one barb access hole adapted to allow a corresponding barb of a sleeve device to extend therethrough when the sleeve device is fitted around the first section; a second section; and a separator between the first and second sections.
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