Retaining member and insulating vessel incorporating same

A retaining member, comprising

• a body including a first end, a second end, and a frustoconical body portion extending from the first end to the second end, wherein the frustoconical body portion defines a first aperture at the first end of the body and a second aperture at the second end of the body;
• and
• a deformable member extending from at least a portion of the frustoconical body portion, the deformable member including:
• an outer surface lining an inner surface of the frustoconical body portion and having a frustoconical shape;
• an inner surface, opposite the outer surface, the inner surface of the deformable member having a frustoconical shape;
• and
• a circumferential edge portion extending radially inward from the outer surface and overlapping the first aperture in an axial direction of the retaining member, the circumferential edge portion defining an opening with a diameter less than a diameter of the first aperture.

A vacuum-insulated vessel, comprising:

• a retaining member including:
• a body having a first end, a second end, and a body portion extending from the first end to the second end, wherein the body portion defines a first aperture at the first end of the body and a second aperture at the second end of the body,
• a skirt extending away from the second end of the body, and
• a deformable member including:
• an outer surface lining an inner surface of the body portion and having a frustoconical shape;
• an inner surface, opposite the outer surface, the inner surface of the deformable member having a frustoconical shape;
• and
• a circumferential edge portion overlapping the first aperture;
• and
• a double-walled container including a closed end, an open end, and an outer wall extending between the closed end and the open end, wherein
• the skirt of the retaining member is positioned within the inner open end of the double-walled container and is configured to be concentric with and removably attached to the open end of the double-walled container.