Drinking flask
AssigneeVogue International Limited
InventorCHRISTOPHER MARK FRANCIS THOMPSON
Life of this patent
Estimating the term…
Abstract
A drinking vessel comprises a body part (10) to receive a drinks liquid, a lid (30) to seal the top of the body part, a liquid outlet passage (50, 52) extending down to a lower region of the interior space of the body part, and an air intake passage (54) also extending down to the lower region of the interior space of the body part. As the user draws liquid out of the vessel through the liquid outlet passage (50, 52), replacement air enters through the air intake passage (54) and then bubbles upwardly through the liquid within the vessel.
Claims18
1) A drinking vessel which comprises a body part having an interior space providing a vessel to receive a drinks liquid, a lid arranged to close the top of the body part in sealed manner, a liquid outlet passage extending downwardly and opening into a lower region of the interior space of the body part, and an air intake passage also extending downwardly and opening into the lower region of the interior space of the body part such that, as a user draws liquid from the lower region of the body part through said liquid outlet passage, replacement air enters the lower region of the body part through said air intake passage and then bubbles upwardly through the liquid within the vessel.
4) A drinking vessel as claimed in any preceding claim, in which the lid comprises a main part which has a peripheral sealing member of elastomeric material.
6) A drinking vessel as claimed in any preceding claim, in which the liquid outlet passage extends to the bottom, or substantially to the bottom, of the interior space of the body part of the vessel.
7) A drinking vessel as claimed in any preceding claim, in which the air intake passage extends to the bottom, or substantially to the bottom, of the interior space of the body part of the vessel.
8) A drinking vessel as claimed in any preceding claim, in which the liquid outlet and air intake passages comprise respective tubes which are connected to the lid and extend downwardly within the interior space of the body part of the vessel.
11) A drinking vessel as claimed in any preceding claim, in which the upperside of the lid is formed with a recess which receives a pivoted mouthpiece connected to the liquid outlet passage.
14) A drinking vessel as claimed in any preceding claim, in which the liquid outlet and/or air intake passage comprises a tube which is connected through the wall of the body part, adjacent the upper end of the body part.
15) A drinking vessel as claimed in any preceding claim, in which the liquid outlet and/or air intake passage comprises a tube which is spiral in form.
17) A drinking vessel as claimed in any preceding claim, in which the liquid outlet passage and/or the air intake passage comprises a tube which extends downwardly on the exterior of the body part, for at least part of its path, and then enters the interior space of the body part through its wall.
Dependencies are inferred from the claim text.