Patent ID: 6858802
Filing Date: 2005-02-22
Classification: H02G

Abstract:
1. An alarm signal installation comprising, in combination: a junction box comprising a square rear panel approximately five inches square, four sides extending forwardly from said rear panel, and an open front end; an extension ring removably attachable to the junction box over the open front end of the junction box, the extension ring having a square outer flange portion and a center portion having a plurality of sidewalls defining a large aperture and a transverse plate covering a substantial portion of the large aperture, the transverse plate including a small threaded aperture that is located near the center of the large aperture; an alarm signaling unit having a front panel with a centrally located aperture and a rearwardly extending portion; a screw disposable through the aperture in the alarm signaling unit and threadably engaging the small threaded aperture in the transverse plate thereby removably attaching the alarm signaling unit to the extension ring.