Abstract: A hat with a cooling fan mounted therein may include a head covering portion for covering a portion of a head of a user, a visor portion connected to the head covering portion. The visor portion may include a fan apparatus and a detachably connected filter to cooperate with the fan apparatus to provide filtered air to the user. The fan apparatus may include a fan motor, and the fan apparatus may include a fan blade. The fan apparatus may be connected to a power source to power the fan apparatus, and the power source may include a battery. The power source may include a solar powered device, and the visor portion may include an aperture to cooperate with the motor assembly.

Abstract: A safety knife adapted for cutting corrugated cardboard boxes and the like which is characterized by having a cutting blade which is continuously biased toward a retracted position within the knife's handle. The blade is held within a carriage that is slidable along a groove within the handle. A tension spring attached to the carriage urges the carriage toward its retracted position at all times. A dragging means is provided for pulling the carriage out of the handle and bringing the blade into contact with a structure to be cut. In one embodiment, this dragging means includes a cantilevered wire firmly attached to the slidable carriage, with the distal end of said wire having a hook which is adapted to drag along the structure to be cut. When the blade is cutting, the wire flexes backward into a position alongside the blade where it does not interfere with the cutting action.