Flexible Bulb Patents (Class 99/302FB)
  • Patent number: 4158329
    Abstract: A drip coffee brewer for the brewing of a single serving of coffee consisting of a standard hot beverage cup, made of self-insulating material such as expanded polystyrene, with a portion of the bottom omitted or removed and with a cup-shaped capsule containing, integral with the bottom thereof, a raised filter-supporting grid of circular ridges, the troughs between which are connected to radial ducts leading to a central spout. The capsule, which contains a measured quantity of ground roasted coffee beans, has a perforated cover onto which boiling water is poured. The brewer is held firmly in a cup holder resting on the lip of a container. A plastic bulb is placed on top of the brewer and, when compressed, expedites the flow of water through the ground coffee beans. The capsule can be vacuum-sealed to preserve the freshness of the ground coffee. The capsule and brewing cup are disposable, the cost being less than the cost of filters for comparable brewers.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: June 19, 1979
    Inventor: Robert J. McKnight