fixture into the ceiling grid the rail is rotated relative to the mounting bracket such that the rail will clear the ceiling grid thereby compressing the spring the lighting fixture is inserted into the ceiling grid and the rail is released the compression of the spring is relaxed and the rail rotates back into its original position the rail now extending beyond the boundary of the ceiling grid rests on the ceiling grid is thereby secured within the ceiling grid application_number US 91595710 A description one embodiment of the invention includes a spring loaded rail assembly 10 for a lighting fixture that includes a rail that is pivotable downwardly as the fixture is inserted up through the ceiling grid opening to thereby create sufficient clearance for the fixture to be installed from u201c below the grid u201d the spring tension biases the rail of the rail assembly 10 back to its original extended position once the fixture is above the grid and the rail can rest on the ceiling grid to help support the fixture within the ceiling with reference to fig1 a 5 the rail assembly 10 includes a mounting bracket 100 a rail 200 and spring 300 which are held together and in place by a pivot screw 500 as discussed below spring 300 is tensioned to hold rail 200 in the illustrated extended position when at rest i e when no external forces are being applied to the rail 200 several views of an exemplary mounting bracket 100 are provided in fig1 a 1c views of an exemplary rail 200 are provided in fig2 a 2c and.