Extension ring for electrical junction box installations

Details Extension ring for electrical junction box installations Extension ring for electrical junction box installations

2005-02-22

2005-02-22

Patel, Dhiru R. (Department: 2831)

Electricity: conductors and insulators

Boxes and housings

With electrical device

C174S053000, C220S003200, C340S287000, C361S600000

Reexamination Certificate

active

06858802

ABSTRACT:
A junction box assembly for weather-resistant installations is disclosed including a junction box (100) and an extension ring (116, 216) adapted to attach with an component such as an alarm signaling unit (118, 218). The junction box assembly enables a relatively uniform compressive force about the periphery of the alarm signaling unit, such that a good, weather resistant seal is produced between a sealing surface (159, 259) on the alarm signaling unit and a mounting surface (161). In an embodiment of the assembly the extension ring (216) includes a flange (244) that attaches to the junction box, an large aperture (247) providing access to the interior of the junction box, and a mounting plate (266) including a threaded aperture (254) that is centrally located to align with a mounting aperture (242) in the alarm signaling unit. A gasket (219) may be provided between the signaling unit and the sealing surface.

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