Abstract: The present invention discloses a fire shelter with an escape ladder, wherein multiple fireproof boards are installed to the walls of a chamber, and the seams of the door are sealed; thereby, a shelter, which can retard the flame and fume of a fire, is formed. An escape apparatus is installed inside the fire shelter, wherein at least two I-shaped sliding channels are installed before an escape window and higher than the lower border of the escape window; an expansible sliding frame is installed between the I-shaped sliding channels and can slide and expand along the I-shaped sliding channels; a rope ladder is installed to a transverse beam above the expansible sliding frame and is able to hangs down outside the escape window; an auxiliary apparatus is used to release the rope ladder gradually; thus, people can escape from the fire shelter one by one via the rope ladder.

Abstract: Disclosed is an electrical plug having contact tubes retained between a top shell and a bottom shell by an adjusting binding screw and two washers, and a plate spring retained between the top shell and one washer, wherein turning the adjusting binding screw inwards causes the top and bottom shell to squeeze the split front end of each contact tube in reducing its diameter for positive contact.