Closure device for a fluid vessel
AssigneeMagicup Marketing Limited
InventorsSteven LE MASURIER, Stewart HUMPHREY, Darren PARSONS
Life of this patent
Estimating the term…
Abstract
A closure device for a fluid vessel can comprise a bistable valve arrangement which includes first and second valve rim portions and a valve member engageable with either of the rim portions respectively to define an open position in which fluid can exit the vessel and a closed position in which fluid is substantially prevented from exiting the vessel The valve can be arranged to close automatically when an impulse is exerted against the valve member. This can occur for example when the vessel is knocked over and the fluid therein exerts pressure against the valve member.
Claims21
1-63. (canceled)
A lid for a fluid vessel, comprising:
- a valve that controls flow of fluid from the fluid vessel, and
- wherein the valve comprises a plastics material impregnated with a magnetic material.
A lid for a fluid vessel, comprising:
- a valve that controls flow of fluid from the fluid vessel through a valve aperture, and
- wherein the valve aperture is circumscribed by a valve rim portion over which the fluid flows, irrespective of a rotational orientation of the lid, when the valve is in an open position and the vessel is tilted from an upright position.
A lid for a fluid vessel, comprising:
- a valve disc;
- first and second valve seats positioned on opposite sides of the valve disc;
- in a closed position, a periphery of the valve disc engages a valve rim portion of the first valve seat, wherein the valve rim portion circumscribes a valve aperture;
- and
- in an open position, the valve disc engages the second valve seat and permits relatively unobstructed flow through the valve aperture.
Dependencies are inferred from the claim text.