(under subclass 279) Infusion apparatus of the type in which infusing liquid is forced from a heating and storage vessel, by the pressure of the vapor evolved during a heating operation through a suitable channel into an extraction vessel and is then caused to revert to the heating and storage vessel, through substantially the same channel, by either gravity alone or in conjunction with the vacuum produced in the heating and storage vessel incident to the condensation of the vapors therein.
(1) Note. These devices are frequently fabricated of glass and are sometimes referred to as "glass coffee makers".
SEE OR SEARCH THIS CLASS, SUBCLASS:
296, for infusors in which liquid is caused to pass from one vessel to another by an inversion of the apparatus.
SEE OR SEARCH CLASS
210, Liquid Purification or Separation,
481, for filters for reflex coffee makers. 215, Bottles and Jars,
396+, or handles for glass bowls.
285, Pipe Joints or Couplings,
19+, for a joint between spaced plates (e.g., between the walls of two vessels), and subclasses 223+ for a flexible joint between rigid members.
392, Electric Resistance Heating Devices,
450, for electric heaters, for this type of infusion apparatus.
