Extendible flexible electrical conduit with conductors therein

Details Extendible flexible electrical conduit with conductors therein Extendible flexible electrical conduit with conductors therein

2005-04-05

2005-04-05

Nguyen, Chau N. (Department: 2831)

Electricity: conductors and insulators

Conduits, cables or conductors

Extensible

C174S07000A, C174S07500C, C174S07500C, C174S07500C

Reexamination Certificate

active

06875924

ABSTRACT:
An extendible flexible electrical conduit with a telescoping section connected between two spiral gooseneck sections and having insulated electrical conductors extending through the conduit. The conductors are helically wound inside the inner tube of the telescoping section so as to allow them to extend and contract to accommodate extension and contraction of the telescoping section. The outer tube of the telescoping section is oval along most of its length and the sliding end of the inner tube is also oval. The length of the telescoping section may be locked by rotating the inner tube with respect to the outer tube.

REFERENCES:
patent: 2209912 (1940-07-01), Deems
patent: 2488480 (1949-11-01), Spirt
patent: 2520497 (1950-08-01), Finke
patent: 2550423 (1951-04-01), Nelson
patent: 3026409 (1962-03-01), Deisch
patent: 3324254 (1967-06-01), Shaw et al.
patent: 4989295 (1991-02-01), Guhne et al.
patent: 5065299 (1991-11-01), Cohen
patent: 5176438 (1993-01-01), Fisherman
patent: 5874709 (1999-02-01), New et al.
patent: 5933557 (1999-08-01), Ott
patent: 6448494 (2002-09-01), Erlich et al.

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