Abstract: The present invention utilizes the resilient force (i.e. the force to deform when pressure is added and to return to the original shape when the pressure is removed) of an elastic member or bias member. A large pressure if added in advance to the elastic member or bias member disposed in a preserver body to set the preserver body in a thin and flat state. In an emergency, the resilient force of the elastic member or bias member causes water or air to be sucked into the preserver body. The volume of the preserver body is expanded by the air sucked in due to the resilient force of the elastic member or bias member or by gas generated by a chemical reaction between the sucked-in water and a foaming agent. The increased volume causes the preserver body to float, thereby enabling a wearer to breathe.

Abstract: An electromotive unit that produces an electric current in response to a pressure applied thereto when a user lands the ground on his/her foot while walking or running, or a pressure detector that detects variation in the applied pressure is formed like a flat plate and arranged within a small space in a shoe. A wire material is provided to deliver, outside the shoe, the electric current produced in response to the pressure applied when the user lands the ground on his/her foot or a signal indicative of the variation in the applied pressure. The wire material is connected to a pedometer unit outside the shoe to perform counting. The wire material can be fixed and mounted onto a desired portion in the opening of the shoe by using a fastener or by being formed as a fixable wire material.

Abstract: The present invention utilizes the resilient force (i.e. the force to deform when pressure is added and to return to the original shape when the pressure is removed) of an elastic member or bias member. A large pressure if added in advance to the elastic member or bias member disposed in a preserver body to set the preserver body in a thin and flat state. In an emergency, the resilient force of the elastic member or bias member causes water or air to be sucked into the preserver body. The volume of the preserver body is expanded by the air sucked in due to the resilient force of the elastic member or bias member or by gas generated by a chemical reaction between the sucked-in water and a foaming agent. The increased volume causes the preserver body to float, thereby enabling a wearer to breathe.

Abstract: The present invention utilizes the resilient force (i.e. the force to deform when pressure is added and to return to the original shape when the pressure is removed) of an elastic member or bias member. A large pressure if added in advance to the elastic member or bias member disposed in a preserver body to set the preserver body in a thin and flat state. In an emergency, the resilient force of the elastic member or bias member causes water or air to be sucked into the preserver body. The volume of the preserver body is expanded by the air sucked in due to the resilient force of the elastic member or bias member or by gas generated by a chemical reaction between the sucked-in water and a foaming agent. The increased volume causes the preserver body to float, thereby enabling a wearer to breathe.

Abstract: An electromotive unit that produces an electric current in response to a pressure applied thereto when a user lands the ground on his/her foot while walking or running, or a pressure detector that detects variation in the applied pressure is formed like a flat plate and arranged within a small space in a shoe. A wire material is provided to deliver, outside the shoe, the electric current produced in response to the pressure applied when the user lands the ground on his/her foot or a signal indicative of the variation in the applied pressure. The wire material is connected to a pedometer unit outside the shoe to perform counting. The wire material can be fixed and mounted onto a desired portion in the opening of the shoe by using a fastener or by being formed as a fixable wire material.

Abstract: The present invention utilizes the resilient force (i.e. the force to deform when pressure is added and to return to the original shape when the pressure is removed) of an elastic member or bias member. A large pressure if added in advance to the elastic member or bias member disposed in a preserver body to set the preserver body in a thin and flat state. In an emergency, the resilient force of the elastic member or bias member causes water or air to be sucked into the preserver body. The volume of the preserver body is expanded by the air sucked in due to the resilient force of the elastic member or bias member or by gas generated by a chemical reaction between the sucked-in water and a foaming agent. The increased volume causes the preserver body to float, thereby enabling a wearer to breathe.