Security hinges and junction boxes for lamp housings

Claim 1

A security hinge to mount a lamp housing to a support, said hinge comprising: a first knuckle and a second knuckle joined together for relative rotation with respect to each other around a hinge axis; said first knuckle having a first side and a second side through which said axis passes, an internally threaded axially-extending socket opening into each side, and including rotation-resisting means on said first side; said second knuckle comprising a first part and a second part, said parts each including interlinking means for binding said parts for simultaneous rotation around said axis, said first part facing said first side and bearing complementary rotation-resisting means engagable with those on the first knuckle to restrain the knuckle against relative rotation when engaged to one another, said second part facing said second side, both of said parts having an axial hole therethrough; a pair of shroud members each having an abutment face, a side face with an axial aperture extending between them, there being a counterbore extending into said aperture and an internal shoulder, one of said shrouded members being disposed on each side of said second knuckle; and a pair of hinge pins, each having an externally threaded shank and an enlarged head, and a shoulder on the head adjacent to the shank, said head having torque tool engagement means, and being so proportioned as to fit within said counterbore with the shoulders in abutment, the shank passing through the respective shroud member, second knuckle part, and into said socket, with the rotation-resisting means interengaged, and with the hinge tigthened together to hold it assembled and with a selected angularly adjusted relationship between the knuckles, said shroud members shielding said heads from direct lateral engagement by a torque tool.