Abstract: A female electric cord plug or wall outlet is provided for fastening to a male electric cord plug having at least one prong, where the at least one prong has a longitudinal axis and at least one dent, including at least one prong receiving opening having a longitudinal axis along which the prong receiving opening receives the at least one prong, a prong engaging mechanism in the form of at least one dent engaging member which can enter the prong member can exit the prong receiving opening and disengage the dent and where the dent engaging member includes a shaft positioned essentially perpendicular to the longitudinal axis of the prong receiving opening and a cantilever structure having two ends and attached at one end to the shaft to protrude laterally from the shaft, the shaft being positioned to pass adjacent to the prong receiving opening, the shaft being slidable relative to the prong receiving opening such that the laterally protruding cantilever structure enters and exits the prong receiving opening to

Abstract: Method comprises positioning a spray gun and its cup-connecting means in a stationary support, and its gun cup in a rotatable cup holder in a closed chamber. Then, compressed air and cleaning liquid is passed through the gun and cup-connecting means, while simultaneously rotating the cup holder and spraying the exterior surfaces of the cup, gun, and cup-connecting means and the interior surfaces of the cup. In a preferred embodiment, the spray from the gun rotates the cup holder. The device comprises the chamber, the gun support, a rotatable cup holder, a pool for cleaning liquid, spraying means, internal means for filtering and distributing cleaning liquid to the cup connecting means and the spraying means, and means for introducing compressed air from outside the chamber into a compressed-air manifold and then distributing the compressed-air to the gun and spraying means. The device also includes means for venting air that is exhausting from the chamber and means for absorbing fumes in the exhausting air.

Abstract: A phosphorescent keyhole locator particularly adapted for use in combination with a tumbler-type lock comprising a cylindrical tumbler having a circular tumbler end surface with a keyhole therein, and a peripheral end surface around the tumbler end surface. A solid phosphorescent plastic body having an aperture therethrough is adhesively attached to the peripheral end surface with the aperture positioned over the tumbler end surface. The aperture is at least about as large as the tumbler end surface and has straight sides which may be normal to or bevelled towards the tumbler end surface.