Temporary work light string with variably-positionable and re-positionable readily-replaced lamp, optionally with integral hangers, that are optionally electrically connected to plural electrical circuits
View Patent ↗A work light string removably physically mounts and electrically attaches lamps anywhere along it is length, with ready hand positioning and re-positioning of desired numbers of lamps at desired positions, and replacement of damaged lamps. The work light string can have one, or, more preferably two separate electrical circuit in which case each lamp and any external electrical load(s) can be powered by either circuit.
1. A work light string comprising of an electrical cable comprising three electrical conductors therein and a lamp with a bulb for connecting to the electrical cable, the lamp comprising:
a middle assembly comprising a first screw thread for receiving the bulb, two metal conductors for circuit connecting to the bulb, and two prongs each of which is electrically connected to one of the two metal conductors, a second screw thread, a channel extending longitudinally across and into the second screw thread wherein the two prongs are at a bottom of the channel and wherein the electrical cable is configured to be laid in the bottom of the channel on the two prongs;
a top assembly comprising a first screw thread and a second screw thread for threading engagement with the second screw thread of the middle assembly to engage and disengage the middle assembly from the top assembly; and
a bridle ring having a first screw thread for threading engagement with the first screw thread of the top assembly, and a base at a bottom of the bridle ring, wherein the bridle ring is configured for threading the base of the bridle ring downward in the channel and pressing the cable onto the two prongs of the middle assembly so that each of the two prongs come into electrical contact with one of the three electrical conductors in the electrical cable.
2. The lamp of claim 1 , and further comprising an axis extending through the lamp, wherein the first screw thread and the second screw thread of the middle assembly and the first screw thread and the second screw thread of the top assembly and the first screw thread of the bridle ring are co-axial with the axis.
3. The lamp of claim 1 , wherein the top assembly is cylindrically shaped with a substantially flat top and an inner bore, wherein the first screw thread is centered in the top of the top assembly and communicates into the bore, and wherein the second screw thread is around an inner wall of the inner bore forming a female second screw thread, and wherein the second screw thread of the middle assembly is a male second screw thread and the middle assembly has a cylindrically shaped bore that extends downward toward the two prongs with a diameter smaller than a diameter of the male second screw thread and the channel extends longitudinally across and the second screw thread so that there is an interruption in the threads of the male second screw thread on each opposite sides of the male second screw thread so that the electrical cable can be laid down in the channel and extend outward on opposite sides of the middle assembly.
4. The lamp of claim 3 , and further comprising the electrical cable, wherein the electrical cable is self-healing upon withdrawal of the two prongs, wherein the lamps is variably positionable, and re-positionable, and replaceable along a length of the electrical cable at a time after manufacture thereof without severing and splicing the electrical cable, such that the lamp can be re-oriented 180 degrees so that another combination of the two electrical conductors in the electrical cable engage the prongs.