Pump lid and containers employing such

A method for discharging pressurized fluid from a container, the method comprising:

• a) providing a container body;
• b) providing a pump lid deployed on said container body for pressurizing an interior volume of the container, said pump lid having:
• i) a rotatable pump cylinder configuration;
• and
• ii) a pump piston mechanically associated with said rotatable pump cylinder configuration such that at least a portion of said piston is deployed within said pump cylinder, thereby defining between them a variable pump volume, said pump piston configured with a substantially cylindrical piston wall having an interior surface and an exterior surface such that at least a portion of said interior surface is configured for releasable attachment to the container and at least a portion of said exterior surface interacts with said rotatable pump cylinder configuration;
• wherein said association is such that rotation of said rotatable pump cylinder configuration generates linear motion of said rotatable pump cylinder configuration;
• c) actuating said pump lid so as to pressurize an interior volume of the container;
• and
• d) activating a release control arrangement so as to discharge the fluid through an outlet nozzle.

A pump lid assembly for use with a container, the lid assembly comprising:

• a) a rotatable pump cylinder configuration;
• b) a pump piston mechanically associated with said rotatable pump cylinder configuration such that at least a portion of said piston is deployed within said pump cylinder, thereby defining between them a variable pump volume, said pump piston configured with a substantially cylindrical piston wall having an interior surface and an exterior surface such that at least a portion of said interior surface is configured for releasable attachment to the container and at least a portion of said exterior surface interacts with said rotatable pump cylinder configuration;
• wherein said association is such that rotation of said rotatable pump cylinder configuration generates linear motion of said rotatable pump cylinder configuration;
• and
• c) a one-way valve arrangement comprising at least one valve component having a through slit through which air is forced by said linear motion.