Electrical outlet trolley

Claim 2

In an overhead electric outlet-suspending trolley construction adapted to be moved in a suspended operating relation from one position to another within a room, a fixed positioned overhead box part adapted to be secured to a ceiling or an adjacent wall portion of the room and having a pair of electrical current carrying bus bars extending in a concealed spaced-apart longitudinally extending relation therealong, a movable carriage part having wheels positioned for movement in electrical contacting relation along said bus bars, a pendant part carried by said carriage part and having an electrical outlet fitting, position adjusting mean operatively mounted between said carriage part and said box part for adjusting the force of electrical engaging contact between said wheels and said bus bars, and said carriage part having electrical connections from said wheels to said outlet fitting.

Claim 3

In a construction as defined in claim 1, said position adjusting means having a slidable positioning at one end with respect to said carriage part.

Claim 4

In a construction as defined in claim 2, said position adjusting means having a fixed mounting with respect to said carriage part at its other end, and having means for moving its said ends inwardly and outwardly with respect to each other.

Claim 5

In a construction as defined in claim 3, roller means carried by said one end of said carriage part and engaging said box part for movement therealong.

Claim 6

In a construction as defined in claim 1, said adjusting means having a lower end portion secured to said pendant part, having adjustable sleeve means securing its lower end portion to said carriage, having slide sleeve means mounting its upper end portion on said carriage, and having roller means carried by its upper end portion adapted to engage said box part for movement therealong.

Claim 7

In a construction as defined in claim 1, said carriage part having a pair of spaced-apart wheels mounted on opposite sides thereof, each said pair of wheels being adapted for operative positioning on an associated said one of said bus bars for electrical engaging movement therealong in a balancing relation with respect to the other pair.

Claim 8

In a construction as defined in claim 1, said box part having a central shoulder portion and a pair of transversely offset sidewise-positioned and longitudinally extending recessed portions therealong that are open downwardly along said central shoulder portion, said carriage having a pair of side legs extending upwardly along said shoulder portion into said recessed portions, said bus bars being positioned within said recessed portions to extend longitudinally therealong, and each of said side legs having an upper cross-extending arm carrying a pair of bus bar engaging wheels at opposite ends thereof.

Claim 9

In a construction as defined in claim 7, said adjusting means comprisinG: an upwardly open U-shaped frame extending along opposite sides of said shoulder portion in a guided relation with respect thereto, roller means rotatably carried by and extending across a lower portion of said U-shaped frame to rotatably engage an underface of said shoulder portion for movement therealong, adjustment nut means operatively connected between said U-shaped frame and said pendant part for varying the vertical position of said roller means with respect to said shoulder portion to vary the force of electrical engagement between the wheels of said carriage part and their associated said bus bars.

Claim 10

In a construction as defined in claim 1, said box part having a centrally located dependent shoulder portion extending longitudinally thereof and defining a planar underface therealong, a pair of side-positioned longitudinally extending recessed portions within said box part along and open downwardly from said shoulder portion, each of said bus bars being positioned on a bottom ledge of each of said recessed portions and having an upwardly projecting guide flange therealong, the upper wall of each of said recessed portions having a downwardly projecting guide flange therealong in vertical alignment with the guide flange of an associated bus bar positioned therewithin, and the wheels of said carriage having peripheral grooves for guided engagement between the flanges of said bus bars and of the upper walls of said recessed portions.

Claim 11

In a construction as defined in claim 9, said carriage part having a pair of vertical legs extending upwardly through openings in said box part into an associated one of said recessed portions, a horizontal arm at the upper end of each of said legs extending horizontally forwardly and backwardly thereof within an associated recessed portion, and a pair of wheels carried at each end of each of said arms for riding movement along an associated one of said bus bars.

Claim 12

In a construction as defined in claim 10, said adjusting means having a U-shaped upper frame guidably positioned for movement along said shoulder portion and having roller means engaging an underface of said shoulder portion, said adjusting means having a lower frame secured at its opposite ends on the pair of legs of said carriage, said upper frame having a pair of slide sleeves carried thereby and engaging an adjacent one of said legs for adjustable movement with respect thereto, a pair of right and left hand threaded stems, one of said stems being secured to project downwardly from said upper frame and the other of said stems being secured to project upwardly from said lower frame, and an adjustment nut having threaded bores at its opposite ends operatively mounted on said pair of threaded stems for adjusting the spacing between said upper and lower frames to thereby adjust the force of electrical contact engagement between said wheels and said bus bars.

Claim 13

In a construction as defined in claim 11, lower end portions of said pair of legs being secured within said pendant part, and a lower end of said lower threaded stem being mounted within said pendant part, and an electric outlet suspended from said pendant part.

Claim 14

In a construction as defined in claim 12, said pendant part comprising a pair of complementary fitted-together portions and having means removably securing said portions together about lower end portions of said legs and said lower stem.

Claim 15

In a construction as defined in claim 1, said box part being of a substantially straight-line longitudinal shape and having electrical leads connected to at least one end of said pair of bus bars.

Claim 16

In a construction as defined in claim 1, said box part being of circular shape and having means for securing it in a fixed position on the ceiling or adjacent wall portion of the room.

Claim 17

In a construction as defined in claim 15, said box part having a pair of separated end portions that are in a closely adjacent opposed relation with respect to each other, and common electrical connectiOns to both ends of each of said bus bars at the separated end portions of said box part.

Claim 18

In a construction as defined in claim 1, said carriage having a pair of horizontally spaced-apart side frames, each said side frame having a pair of vertically downwardly extending side legs of hollow channel-like construction, each leg at its upper end having a U-shaped arm of hollow channel-like construction centrally connected thereto and extending transversely horizontally therefrom, a stub shaft mounted in each end of each of said U-shaped arms in an insulated relation with respect thereto, wire leads connected to each of said shafts and extending along the spacing within each said arm and leg downwardly into said pendant part, and electrical connections from the lower ends of said wire leads in said pendant part to said outlet fitting.