Heated Cups

Flasks and Heated Cups and Containers

A portable, self heating, container assembly used in a motor vehicle, it includes a electrically heated double-walled insulated vessel having a lower end portion telescopically, rotatable and removable received in a tubular socket of a separate base unit. The socket bottom has a pair of electrical contacts connected through a power switch and fuse to a power cord adapted to be plugged into the vehicle cigarette lighter socket. The pair of contacts are engage able with cooperating electrical contacts on the vessel bottom for giving heat energy to the vessel being received in the recessed in the socket. The vessel bottom and socket have cooperating spaced, inter engage able radial locking flanges arranged to securely lock the vessel and base unit together upon rotation of the vessel relative to the base unit after the lower end portion of the vessel is placed in to the socket

The inner container is made of very thin glass which is brittle and fragile. It is made of glass because it can be cleaned with ease. The outer container is often plastic but metal such as aluminium will not crack or crush easily and so will protect the inner flask better. Between the two layers the air is removed to form a vacuum which prevents the transfer of heat away from the contents of the flask, keeping it hot, or the transfer of warmth from the air outside the flask, keeping cold contents cold. The aluminium is also better for ensuring a hole or crack doesn't develop and break the vacuum.

This portable heated cup has a glass window that allows you to see the liquid  content in which changes to red when heating an blue when temperature reaches it limit on a thermostat. A thermostat is a device that is used to control a heating or cooling system so that it maintains a certain temperature or keeps the temperature within a certain range.