Abstract: A thermos bottle includes a body having a container made of metal. The container includes an opening in an upper end thereof. A spout made of plastic is mounted on top of the body. The spout includes a recessed portion in a center thereof. The recessed portion includes a bottom having a through-hole aligned with the opening of the container. The bottom of the recessed portion includes an upper face having an annular area surrounding the through-hole. A gasket made of metal includes an annular portion having a hollow. The gasket is mounted in the recessed portion of the spout. The hollow of the gasket is aligned with the through-hole of the spout. The annular portion rests on the annular area of the upper face of the bottom of the recessed portion.

Abstract: A thermal flask includes a cylindrical body extending in an axial direction. The body includes a top face having an opening. A base is fixed on the top face of the body and surrounds the opening. The base is annular and includes a plurality of threaded sections. An engaging unit is integrally formed with the base. An upper lid is mounted on top of the body and includes a plurality of threaded sections in threading engagement with the threaded sections of the base. The upper lid includes a peripheral wall extending in the axial direction. The peripheral wall includes an engagement hole aligned with the engaging unit. The upper lid is coupled to the body, with the engaging unit releasably engaged with the engagement hole. The engaging unit is disengaged from the engagement hole when the engaging unit is pressed, allowing detachment of the upper lid from the body.