In a seat belt apparatus, a first projecting portion and a second projecting portion which are capable of being brought into abutment with each other so that a switch lever is shifted from a switch OFF position to a switch ON position are provided on a side of a drive gear and a side of a first gear, respectively. The optical switching system reads the address information by detecting the electric power level of a label signal that has been subjected to an optical angular modulation, passed through an optical filter and been subjected to an optical detection. In operation, the fluid flow of this embodiment of the cooling module comprises a synthetic jet stream and ambient fluid entrained into the channel by the synthetic jet stream. It is possible to rewrite both digital information and display information concurrently in noncontact. The user-specific information can be integrated into the operating system at the factory or alternatively upon an initial boot of the computer by the user. One secondary component is a gingival healing component.