Abstract: A window washing tool includes a sponge-like applicator for applying water and cleaning fluid to a window and a resilient squeegee blade in a head portion of the tool. An elongate handle is attached to the head. A rear bar of a pair of hinged blade wiping bars is hingedly attached to the head portion to be moved from a rear retracted position to a forward position. A flexible tube is attached to a front wiping bar and extends along the handle. A knob at a distal end of the tube is operable to move the wiping bars from the rear retracted position to the forward position in which the wiping bars clamp on the edge of the squeegee bar, and to return the wiping bars to the retracted position, thereby absorbing and expressing cleaning fluid to provide a relatively dry squeegee blade for subsequent use.

Abstract: An electrical plug for 3-wire line cords includes a plug body having a U-shaped grounding pin. A rise pin is disposed between opposing walls of the U-shaped grounding pin. A locking element extending through the plug body includes a threaded proximal portion and a flat distal portion, the distal portion having a ramp disposed over the rise pin and a serrate edge opposite the ramp with the distal portion disposed within the grounding pin opposing walls. A locking knob is threaded onto the proximal portion. With the plug in an outlet, the knob is rotated clockwise to draw the flat distal portion rearward causing the ramp to ride up the rise pin and to cause the serrate edge to grip the inner surfaces of the grounding socket. Rotating the knob counterclockwise releases the serrate edge to permit withdrawal of the plug from the outlet.