Abstract: A protective cover assembly is provided for a communications device of the type comprising a radio unit interconnected with an accessory either through a power cord or wireless technology. The cover assembly includes first and second portions constructed of a fire retardant material, such as NOMEX®. The first portion is configured to contain the accessory and the second portion is configured to contain the power cord. The first and second portions are releasably secured to one another by mechanical fasteners, such as snaps. The first portion includes a panel that can be opened to allow the cover to be slid over the radio accessory and closed to secure the cover over the accessory. Typically, the accessory is a speaker/microphone, in which case the cover first portion includes a perforated section that allows sound to pass through the cover.

Abstract: An optical disc for data storage includes a layer of color-shifting material. Light passing through the color-shifting layer will have a color determined by the various constructive and destructive interference of the various wavelengths after they have passed through the material, diffracted while passing through the material, and are reflected off of various portions of the material, resulting in a color change when the viewing angle is changed. Additionally, an optical variable device may be defined within the disc, and may include the color-shifting layer.

Abstract: An optical disc for data storage includes a layer of color-shifting material. Light passing through the color-shifting layer will have a color determined by the various constructive and destructive interference of the various wavelengths after they have passed through the material, diffracted while passing through the material, and are reflected off of various portions of the material, resulting in a color change when the viewing angle is changed. Additionally, an optical variable device may be defined within the disc, and may include the color-shifting layer.

Abstract: A lightweight communications headset includes a headband adapted to be worn on user's head. A speaker housing is carried by the headband and defines an acoustic chamber. A speaker mounted within projects sound waves into the acoustic chamber. The headband carries a pair of earpieces which are positionable adjacent to the user's ears for delivering sound thereto. The acoustic chamber is coupled to earpieces through acoustic passages which transmit sound waves produced in the acoustic chamber to the earpieces. The earpieces preferably include removable in-ear inserts, which may be constructed for insertion into the auditory canals of the user's ears. Since the in-ear inserts are removable, the headset can readily be configured for a variety of applications.

Abstract: A lightweight communications headset includes a headband adapted to be worn on user's head. A speaker housing is carried by the headband and defines an acoustic chamber. A speaker mounted within projects sound waves into the acoustic chamber. The headband carries a pair of earpieces which are positionable adjacent to the user's ears for delivering sound thereto. The acoustic chamber is coupled to earpieces through acoustic passages which transmit sound waves produced in the acoustic chamber to the earpieces. The earpieces preferably include removable in-ear inserts, which may be constructed for insertion into the auditory canals of the user's ears. Since the in-ear inserts are removable, the headset can readily be configured for a variety of applications.

Abstract: The combination of a footwear, such as a sandal and a magnetic fastener to be used to hold together a strap and other parts of the footwear. The magnetic faster includes a first body and a base support. Both have cylindrical recesses containing cylindrical magnets mounted therein. The magnets are oriented to be magnetically attractive to each other. The first body and the base support have interlocking cooperable walls to prevent shear movement of the first body and the base support relative to one another.

Abstract: The combination of a footwear, such as a sandal and a magnetic fastener to be used to hold together a strap and other parts of the footwear. The magnetic faster includes a first body and a base support. Both have cylindrical recesses containing cylindrical magnets mounted therein. The magnets are oriented to be magnetically attractive to each other. The first body and the base support have interlocking cooperable walls to prevent shear movement of the first body and the base support relative to one another.