Patent ID: 9555866
Date: 2017-01-31
CPC Classifications: B63B,B63C

Claim:
1. A life preserver that can be normally worn as a warming clothing, and as a life preserver in an emergency, comprising: a preserver body including a sealed hollow region, the preserver body configured to cover at least a part of a torso; and a foaming portion that includes a foaming agent disposed within the preserver body; a liquid bag disposed in the hollow region that seals a reactive liquid therein, at least one part of the liquid bag being configured to be thin and flat so as to cover at least a part of the torso, wherein the life preserver comprises a ripping structure for ripping the liquid bag or the liquid bag includes a severable portion, when normally used, the thin and flat part achieves an insulating effect by keeping out heat with a face of the liquid bag and a heat retention effect by maintaining the temperature of the reactive liquid, which is warmed by the body's heat; when used in an emergency, the reactive liquid from the ripped liquid bag reacts with the foaming agent, and the preserver body expands to obtain buoyancy, and the foaming agent is wrapped within a material that is dissolved by the reactive liquid.