Abstract: An environmentally compliant triboelectric applicator and process for coating or ablating a substrate and for retrieving excess or ejected material from the substrate. The applicator comprises an inner supersonic nozzle for accelerating triboelectrically charged projectile particles entrained in a supersonic gas to speeds sufficiently high to coat or ablate a substrate. The applicator further comprises an outer evacuator nozzle coaxially surrounding the inner supersonic nozzle for retrieving excess projectile particles, ablated substrate powders, or other environmentally hazardous materials. A fluid dynamic coupling uses the efficacy of the Mach turning angle associated with a supersonic boundary layer of carrier gas to aspirate the central core of the supersonic two-phase jet.

Abstract: A device for the protection and assistance in manual transportation of bulky articles. The device includes a main panel which is elongated in a first direction. The article to be carried may be placed at the longitudinal center of the main panel and the longitudinal ends thereof brought upwardly about the article. Straps with appropriate fasteners are provided on the main panel to maintain the longitudinal ends in this upward configuration about the article. To aid in the manual transport of the device and enclosed article, a pair of handles, one on each longitudinal end of the main panel, may be readily grasped by the user. To protect the article against moisture and electrical shock, it is preferably formed of a waterproof and electrically insulating material. Additionally, the device may include a top flap along one longitudinal end. Side flaps may be provided at each lateral edge extending from the longitudinal end containing the top flap to a point beyond the longitudinal center of the main panel.