Battery powered coffee maker

• US 3,998,143 A
• Filed: 12/12/1975
• Issued: 12/21/1976
• Est. Priority Date: 02/12/1975
• Status: Expired due to Term

• Current Assignee: Helen G. Frye
• Original Assignee: Helen G. Frye
• Inventors: Frye, Helen G.
• Primary Examiner(s): Gilreath, Stanley N.
• Assistant Examiner(s): Henderson, Arthur O.
• Application Number:
  US05/640,051
• Time in Patent Office: 375 Days
• Field of Search: 99/279, 99/280-281, 99/282-283, 99/416, 99/446, 126/273.5, 219/387, 219/441
• US Class Current: 99/280
• CPC Class Codes: A47J 31/005 Portable or compact beverage making apparatus, e.g. for travelling, for use in automotive vehicles
• CPC Class Codes: A47J 31/505 with heat-supply regulation

Abstract

A battery powered coffee maker, for non-boil coffee and the like, including a generally rectangular container having a battery contained in the base of the container, electrical heating elements in the walls and in the base of the container for providing gentle heat, and an insulated housing for the container to reduce heat loss. The apparatus includes electrical circuitry to allow all heating elements to be used for brewing coffee and the like and to allow only the base heating element to be used to maintain serving temperature.

Claims

1. A coffee maker comprising a container and an insulated housing for said container, said container including opposed walls, a top, and a base, a first heating element in one of said opposed walls, a second heating element in the other of said opposed walls, and a third heating element in said base, power supply means in said base, and selector means for selectively connecting said power supply means to said first heating element, said second heating element and said third heating element, said selector means including a first circuit means for connecting said first heating element, said second heating element and said third heating element in parallel with one another and with said power supply means, and second circuit means for connecting said third heating element in parallel with said power supply means and for isolating said first heating element and said second heating element, said housing including a front panel, a bottom, substantially parallel side walls, and a top substantially parallel to said bottom, a plug fixed to said front panel and extending inwardly of said housing, a jack in said base of said container, said plug and said jack being located so that said plug is received within said jack when said container is placed within said housing, and a selector knob, said selector knob being electrically connected to said first circuit means and said second circuit means.

2. A coffee maker as claimed in claim 1, and further including timing means for disconnecting said first circuit means when a predetermined condition is reached and automatically connecting said second circuit means.

3. A coffee maker as claimed in claim 2, and including a plurality of spring means within said housing, each of said plurality of spring means being located between said container and said housing for locating said container within said housing.