All-Glass Travel Mug

A beverage container or kettle comprising:

• a body having a closed bottom end, an open upper end, and constructed from glass, wherein the body is formed with a double wall having an inner wall and an outer wall, wherein a wall gap is defined by an inner surface of the outer wall and an outer surface of the inner wall, wherein the closed bottom end is formed with an inner bottom wall and an outer bottom wall to form a double bottom wall with the inner bottom wall continuous with the inner wall and the outer bottom wall continuous with the outer wall, wherein a bottom gap defined by an inner surface of the outer bottom wall and an outer surface of the inner bottom wall is continuous with the wall gap, wherein a vent hole is formed or created in the outer bottom wall in fluid communication with the wall gap, and wherein an inner face of the inner wall proximal the upper end is formed from ground glass to form a first half of a discontinuous or interrupted glass joint;
• and,
• a lid having a top lid surface and a bottom lid surface spaced by a lid side face, wherein the lid is formed with a raised grip having a depression formed in a central portion of the grip and two raised areas formed on outer portions of the grip, wherein the lid side face is formed from ground glass to form a second half of the glass joint, wherein the lid side face mates with, and registers against, the inner face of the inner wall to form the glass joint when the lid is inserted into the upper open end of the body, and wherein the upper open end of the body defines a body upper surface, wherein the lid, when inserted into the open upper end of the body to form the glass joint, the top surface of the lid and/or the raised grip is level with or below the plane occupied by the body upper surface.

A beverage container or kettle comprising:

• a body having a closed bottom end, an open upper end, and constructed from glass having a coefficient of thermal expansion, wherein the body is formed with a double wall having an inner wall and an outer wall, wherein a wall gap is defined by an inner surface of the outer wall and an outer surface of the inner wall, wherein the closed bottom end is formed with an inner bottom wall and an outer bottom wall to form a double bottom wall with the inner bottom wall continuous with the inner wall and the outer bottom wall continuous with the outer wall, wherein a bottom gap defined by an inner surface of the outer bottom wall and an outer surface of the inner bottom wall is continuous with the wall gap, and wherein an inner face of the inner wall proximal the upper end is formed from ground glass to form a first half of a discontinuous or interrupted glass joint;
• a lid having a top lid surface and a bottom lid surface spaced by a lid side face, wherein the lid is formed with a raised grip having a depression formed in a central portion of the grip and two raised areas formed on outer portions of the grip, wherein the lid side face is formed from ground glass to form a second half of the glass joint, wherein the lid side face mates with, and registers against, the inner face of the inner wall to form the glass joint when the lid is inserted into the upper open end of the body, and wherein the upper open end of the body defines a body upper surface, wherein the lid, when inserted into the open upper end of the body to form the glass joint, the top surface of the lid and/or the raised grip is level with or below the plane occupied by the body upper surface;
• and,
• an inductive coupling layer joined to, or secured to, the outer surface of the inner wall, wherein the inductive coupling layer has a coefficient of thermal expansion matched to the coefficient of thermal expansion of the glass.

A beverage container or kettle comprising:

• a body having a closed bottom end, an open upper end, and constructed from glass, wherein the body is formed with at least one wall, and wherein an inner face of the at least one wall proximal the upper end is formed from ground glass to form a first half of a discontinuous or interrupted glass joint;
• a lid constructed from glass having a top lid surface and a bottom lid surface spaced by a lid side face, wherein the lid has portions defining a drinking port or side channel that extends from the top lid surface down to the bottom lid surface and partially defined by portions of the lid side face that creates a discontinuity or interruption in the lid side face and other portions that define a vent port or vent channel that extends from the top lid surface down to the bottom lid surface partially defined by portions of the lid side face that creates a discontinuity or interruption in the lid side face, wherein the lid side face is formed from ground glass to form a second half of the discontinuous or interrupted glass joint, wherein the lid side face mates with, and registers against, the inner face of the at least one wall, except at the locations of the drinking port and the vent port, to form the discontinuous or interrupted glass joint when the lid is inserted into the upper open end of the body;
• and,
• an inductively couplable layer joined to, or secured to, an outer surface of the at least one wall and/or to an outer surface of the bottom end.