Patent ID: 7290677
Filing Date: 2007-11-06
Classification: A47J,F25D

Abstract:
1. A method of maintaining a temperature-controlled substance in a desired ambient temperature, the method comprising the steps of: providing an outer bowl member, the outer bowl member for containing temperature-maintaining matter, the outer bowl member having an inner bowl surface, an outer bowl surface, a superior bowl support rim, and an inferior bowl contact surface; placing temperature-maintaining matter into the outer bowl member, the temperature-maintaining matter having volatility, the volatility allowing vapor to permeate from the temperature-maintaining matter; providing an inner vessel member, the inner vessel member for containing a temperature-controlled substance, the inner vessel member having an inner vessel surface, an outer vessel surface, a superior perimeter flange sized and shaped to snug down atop the superior bowl support rim, a superior vessel contact seat inwardly adjacent to the superior perimeter flange, and an inferior vessel portal surface, the superior vessel contact seat having a contact seat perimeter, the outer vessel surface being sized and shaped to rest in gapped relation to the inner bowl surface thus creating a container cavity for retaining vapor; placing a temperature-controlled substance into the inner vessel member; nesting the inner vessel member with placed temperature-controlled substance into the outer bowl member, the superior perimeter flange being snugged down atop the superior bowl support rim, thus suspending the outer vessel surface in gapped relation to the inner bowl surface, creating a container cavity for retaining vapor; providing a lid member for enclosing the inner vessel member, the lid member having an inner lid surface, an outer lid surface, a superior lifting protrusion, and an inferior lid contact surface; and enclosing the inner vessel member with the lid member for maintaining the temperature-controlled substance in the desired ambient temperature, the inferior lid contact surface having a lid contact surface perimeter, the inferior lid contact surface being sized and shaped to snug down atop the superior vessel contact seat for preventing the passage of vapor between the inferior contact surface and the superior contact seat, wherein the outer bowl member, the inner vessel member and the lid member are constructed from porous material, wherein the inner bowl surface, the outer bowl surface, the superior bowl support rim, the inner vessel surface, the outer vessel surface, the superior perimeter flange, the inner lid surface, the outer lid surface and the superior lifting protrusion comprise vapor-impervious glazed coating to prevent passage of vapor through the vapor-impervious glazed coating, thus allowing vapor to permeate from the container cavity through the inferior vessel portal surface between the inner vessel surface and outer vessel surface, thus further allowing vapor to permeate through the superior vessel contact seat and inferior lid contact surface, the permeation of vapor thus facilitating the maintenance of temperature in the enclosed inner vessel member.