Abstract: An electrically powered slotted rotary shaver which provides the clean, close shave of a hand-held razor combined with the safety, comfort and convenience of an electric shaver. The slotted rotary shaver comprises a body portion and a shaving portion. The head portion is provided with one or more shaving head assemblies having fixed upper grids and lower rotary grids. The upper grids are positioned upon a shaft extending from motor positioned within the body portion of the shaver. The upper grids are advantageously separated into four pie-shaped quadrants held together at the center by a pivot point, and comprise a plurality of apertures disposed over the high surface active cutting area of the upper grid through which hair protrudes when the head portion of the shaver is placed against a user's skin.

Abstract: A holster apparatus for use in combination with a self-protection chemical dispenser having a cylindrical body equipped with a spray nozzle and an actuator button. The holster includes a casing having a body portion for receiving the dispenser. The casing also includes a first retainer at one end thereof which can be a flap and a second retainer at the other end thereof for selectively holding the dispenser in the casing in the position so that the dispenser can be actuated by the actuator button to cause protective chemicals to be sprayed from the spray nozzle while the dispenser is in the casing. Separate belt connectors adapted to be attached to a user's belt and an attaching structure is provided for operably connecting or disconnecting the casing to the belt connector whereby the casing with the dispenser therein can be quickly and easily accessed for use or stored away for immediate re-access.

Abstract: A method and apparatus for making artificial snow wherein a stream of compressed air and liquid water is expanded into a nucleating in which there is established an electrostatic field. By subjecting the expanding stream of compressd air and liquid water to the electrostatic field, the mean particle size of the ice nuclei formed in the nucleating zone is decreased and the number of ice nuclei particles produced for a given water flow is increased. Additionally, a stream of pressure water may be injected into the secondary air into which the ice nuclei pass in order to increase the humidity of the secondary air by atomizing the injected in a second electrostatic field.

Abstract: In a fluidized bed of solid particles having one or more heat exchange tubes immersed therein, the rate of heat transfer between the fluidized particles and a fluid flowing through the immersed heat exchange tubes is controlled by rotating an arcuate shield apparatus about each tube to selectively expose various portions of the tube to the fluidized particles.

Abstract: In a fluidized bed of solid particles having one or more heat exchange tubes immersed therein, the rate of heat transfer between the fluidized particles and a fluid flowing through the immersed heat exchange tubes is controlled by rotating an arcuate shield apparatus about each tube to selectively expose various portions of the tube to the fluidized particles.