Abstract: An embodiment of a cap for a bottle may comprise a body and nozzle. The body may include an annular wall, an aperture configured to receive a nozzle, and a plug rigidly attached within the aperture. The nozzle may be movable between a retracted position in which fluid cannot pass between plug and nozzle, and an extended position in which fluid can pass between plug and nozzle. The nozzle may include an inner wall and an outer wall. The outer wall may have at least one longitudinal recess. The longitudinal recess may allow selective passage of air. The longitudinal recess may allow air to flow through the recess and into the bottle when the nozzle is in the extended position, and is contained within the aperture and is thus configured to prevent air from flowing through the recess and into the bottle when the nozzle is in the retracted position.

Abstract: A container for holding fluid that may comprise a bottle, a cap, and a handle. The bottle may include a cavity configured to hold a volume of liquid, a body forming the cavity, a first set of threads on the body, and a second set of threads on the body. The cap may have a set of cap threads configured to mate with the first set of threads. The handle may have a set of handle threads configured to mate with the second set of threads.

Abstract: Metal-walled vacuum flasks including tin phosphorus oxide sealing glass, and methods of sealing an exhaust aperture for a metal-walled vacuum flask, including disposing a tin phosphorus oxide sealing glass frit adjacent the exhaust aperture, applying a vacuum to the metal-walled vacuum flask; and raising a temperature of the sealing glass frit under the vacuum sufficiently that the sealing glass flows and seals the exhaust aperture.

Abstract: An embodiment of a cap for a bottle may comprise a body and nozzle. The body may include an annular wall, an aperture configured to receive a nozzle, and a plug rigidly attached within the aperture. The nozzle may be movable between a retracted position in which fluid cannot pass between plug and nozzle, and an extended position in which fluid can pass between plug and nozzle. The nozzle may include an inner wall and an outer wall. The outer wall may have at least one longitudinal recess. The longitudinal recess may allow selective passage of air. The longitudinal recess may allow air to flow through the recess and into the bottle when the nozzle is in the extended position, and is contained within the aperture and is thus configured to prevent air from flowing through the recess and into the bottle when the nozzle is in the retracted position.