Abstract: An anchor engageable in a structure. The anchor includes a sleeve having an outer surface, a first end, a second end, a channel extending circumferentially around the outer surface, defining an axis extending between the first and second ends, and at least partially enclosing an interior space, the outer surface defining an aperture communicating between the interior space and the channel, an adhesive supported in the interior space, and a pin supported for movement through the interior space to direct at least some of the adhesive outwardly through the aperture into the channel and axially along the outer surface of the sleeve, the pin being engageable with the first end to move the first end radially outwardly into frictional engagement with the structure.

Abstract: A filter bag of rectangular shape is fitted over the computer to be protected. It has a main opening for receiving the computer, and is longer than the computer with the open-ended position extended beyond the computer and tied to close the main opening against the passage of air therethrough. After fitting the bag over the computer, a piece of the bag is cut to form an inner flap, and this flap with an outer flap remains hingedly secured to the bag, in register with a hole in the computer. The flap is momentarily opened for providing access to the computer and closed, and when closed provides an almost perfect seal.

Abstract: A filter bag of rectangular shape is fitted over the computer to be protected. It has a main opening for receiving the computer, and is longer than the computer with the open-ended position extended beyond the computer and tied to close the main opening against the passage of air therethrough. After fitting the bag over the computer, a piece of the bag is cut to form an inner flap, and this flap with an outer flap remains hingedly secured to the bag, in register with a hole in the computer. The flap is momentarily opened for providing access to the computer and closed, and when closed provides an almost perfect seal.