| 摘要 |
A travel mug includes a vessel 10 defined by two shells 14, 16 nested within one another and spaced from each other to define an insulating space 18. Both have open upper ends 20, 22 that are joined in an annular upper end joint 24. An annular shoulder gasket 26 is located on the joint 24 and an annular shoulder 30 is mounted on one of the shells 14, 16 to cover the shoulder gasket 26. The shoulder has a radially inwardly directed gross sealing surface 40 near a lower edge as well as a radially inner thread 42. A lid 12 is removably threaded on the shoulder 30 and has an annular side wall 56 merging with a bottom wall 52 having an imperforate center 52. An array of sip holes 66 is located at the point 58 of merger of the walls 52, 56, and are aligned with the gross sealing surface 40 to be closed thereby when the lid 12 is fully threaded into the vessel 10. An annular lid gasket 74 is located on the side wall 56 of the lid above the sip holes and sealingly engages the shoulder 30 above the gross sealing surface 40. |
