Patent Number: 
Section: claims

1. A device for curing photoactivatable paint coatings, comprising:an undercarriage;a frame positioned on the undercarriage;a housing supported on the frame, the housing having a back wall and a plurality of side wall portions extending therefrom to form a light chamber, each side wall portion having a peripheral region terminating at a UV light emission region;a UV light source contained within the light chamber;a motorized carrier to support the UV light source in the light chamber, the motorized carrier including a first travel cylinder configured to displace the UV light source along a travel path between opposed ends of the light chamber so as to index and/or oscillate the UV light source along the travel path within the housing;a controller for controlling the motorized carrier within boundaries of the travel path, the boundaries being identified by limit switch units; anda reversing unit included with the motorized carrier for reversing the travel of the first travel cylinder following activation of a corresponding limit switch unit;wherein the frame and undercarriage are further arranged to locate the light chamber adjacent a target paint cure location on a work piece, with the UV light emission region facing the paint cure location; andwherein the controller is operable to activate the UV light source and to initiate the motorized carrier to index and/or oscillate the UV light source along the travel path to deliver UV light to the target paint cure location for curing UV curable paint thereon. 2. The device of claim 1, wherein the motorized carrier includes a first linear actuator operating along a first axis and a second actuator operating along a second axis. 3. The device of claim 2, wherein the first and second axes are perpendicular. 4. The device of claim 1, wherein the UV light source includes at least one bulb having a diameter of between about 20 to about 40 mm. 5. The device of claim 4, wherein the bulb has a diameter of about 25 mm. 6. The device of claim 5, wherein the light chamber has lateral dimensions of between about 75 mm to about 100 mm and a depth of between about 50 to about 100 mm. 7. The device of claim 6, wherein the light chamber has lateral dimensions of about 85 mm and about 60 mm, respectively, and a depth of about 93 mm. 8. The device of claim 7, wherein the target paint cure location has lateral dimensions ranging from about 50 mm to about 300 mm and from about 50 mm to about 300 mm respectively. 9. The device of claim 7, wherein the target paint cure location has dimensions of about 90 mm and about 60 mm, respectively. 10. The device of claim 1, wherein the motorized carrier includes a second indexing cylinder to cause a synchronized incremental shift of the path. 11. The device of claim 1, wherein the light source is a fluorescent UV lamp emitting at a wavelength between about 200 to about 400 nanometers. 12. The device of claim 1, wherein the fluorescent UV lamp emits at a wavelength between about 320 to about 390 nm. 13. The device of claim 1, wherein the UV light source includes one or more LED, fluorescent and/or incandescent lamps. 14. A device for curing photoactivatable paint coatings, comprising:a housing, the housing having opposed first boundaries to define a pair of first boundaries and a pair of second boundaries, the first and second boundaries being identified by limit switch units and defining a radiation passage;a radiation source located in the housing, the radiation source configured to emit radiation through the radiation passage to cure a photoativatable paint coating at a target location located adjacent the radiation passage; anda motorized support supporting the radiation source, the motorized support configured in a first phase to displace the radiation source along a first path between the first boundaries and in a second phase to index the first path laterally along a second path between the second boundaries, the motorized support including a reversing unit for reversing the displacement of the radiation source along the first path and/or the second path following activation of a corresponding limit switch unit. 15. The device of claim 14, wherein the motorized support is configured to repeat the first and second phases. 16. The device of claim 15, wherein the motorized support is configured to oscillate the radiation source along the first path between the first boundaries and to index the first path between oscillations. 17. A method for curing a photoactivatable paint coating on a work piece, comprising:providing a motorized support for supporting a radiation source within a housing, the housing having opposed wall portions that define a pair of first boundaries and a pair of second boundaries, the first and second boundaries being identified by limit switch units and defining a radiation passage therebetween;configuring the radiation source to emit radiation through the radiation passage;positioning the housing a sufficient distance from a photoactivatable paint coating at a target location for the radiation source to activate the paint coating;reversibly displacing the radiation source by way of the motorized support in a first phase along a first path between the first boundaries and, in a second phase, indexing the first path laterally along a second path between the second boundaries;wherein the motorized support includes a reversing unit for reversing the displacement of the radiation source along the first path and/or the second path following activation of a corresponding limit switch unit. 18. A method for curing photoactivatable paint coatings in confined regions of a vehicle body, comprising:providing a curing radiation source supported on a motorize carrier;orienting the curing radiation source at a source location in a confined region in a vehicle body relative to a target surface in the confined region;spacing the source location from the target location;in order for the curing radiation source to emit radiation sufficient to cure a photoactivatable paint coating at the target location, establishing an operating region surrounding the target location, the curing radiation source having an angle of attack relative to the target location; andcycling the curing radiation source, by way of the motorized carrier including a reversing unit, along a travel path within the operating region having boundaries defined by limit switch units between a first position and a second position in order to cycle changes in the angle of attack following activation of a corresponding limit switch unit. 19. The method of claim 18, further comprising locating the curing radiation source within a housing with an inner region corresponding to the operating region, the housing having an opening with a sufficiently compact configuration to be located within the confined region, orienting the housing so that the opening is adjacent the target surface, and maintaining the housing substantially stationary relative to the target location while cycling curing radiation source along the travel path within the housing. 20. The method of claim 18, wherein the support is configured to maintain the housing stationary during cycling of the light source along the travel path. 21. A work piece comprising a cured coating according to the method of claim 17. 22. A vehicle comprising a cured paint coating according to the method of claim 18. 23. A device for curing photoactivatable paint coatings, comprising:an undercarriage;a frame positioned on the undercarriage;a housing supported on the frame, the housing having a back wall and a plurality of side wall portions extending therefrom to form a light chamber, each side wall portion having a peripheral region terminating at a UV light emission region;a UV light source contained within the light chamber;a motorized carrier to support the UV light source in the light chamber, the motorized carrier including a first travel cylinder configured to displace the UV light source along a travel path between opposed ends of the light chamber, and a second indexing cylinder to cause a synchronized incremental shift of the path so as to index and/or oscillate the UV light source along the travel path within the housing, and;a controller for controlling the motorized carrier within boundaries;the boundaries of the travel path being identified by limit switch units including a reversing unit for reversing the travel of the first travel cylinder following activation of a corresponding limit switch unit;wherein the frame and undercarriage are further arranged to locate the light chamber adjacent a target paint cure location on a work piece, with the UV light emission region facing the paint cure location; andwherein the controller is operable to activate the UV light source and to initiate the motorized carrier to index and/or oscillate the UV light source along the travel path to deliver UV light to the target paint cure location for curing UV curable paint thereon. 24. The device of claim 23, wherein the light source is a fluorescent UV lamp emitting at a wavelength between about 200 to about 400 nanometers. 25. The device of claim 24, wherein the fluorescent UV lamp emits at a wavelength between about 320 to about 390 nm. 26. The device of claim 25, wherein the UV light source includes one or more LED, fluorescent and/or incandescent lamps.