Brewing device for preparing coffee or tea

Details Brewing device for preparing coffee or tea Brewing device for preparing coffee or tea

1999-11-29

2001-01-16

Alexander, Reginald L. (Department: 1761)

Foods and beverages: apparatus

Beverage

Infusors

C099S28900D, C099S300000, C099S307000, C099S304000, C099S279000

Reexamination Certificate

active

06173642

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a brewing device for preparing coffee or tea.
2. Description of the Prior Art
Brewing devices for preparing coffee or tea, which comprise a cylinder housing defining a cylindrical chamber, and a sprinkler body and a sieve body movable by a cam disk into and out of a position to close the top and bottom ends of the cylindrical chamber, are known.
In automatic dispensers for freshly brewed hot drinks, such as coffee, espresso or tea, the brewing device is one of the most important components. It decisively determines the quality of the drink. The known brewing devices are relatively large, have many parts and a complex structure, and are difficult to clean.
SUMMARY OF THE INVENTION
It is the primary object of this invention to provide a very compact brewing device which has relatively few parts, few places that can be clogged, and is easy to handle and to clean.
The above and other objects are accomplished by the invention with a brewing device for preparing coffee or tea, which comprises a cylinder housing having a top end and a bottom end, and defining a cylindrical brewing chamber having an axis, the cylinder housing having two pivot pins arranged centrally between the top and bottom ends, and projecting from opposite sides of the cylinder housing orthogonally to the axis, the opposite sides having vertically extending, flat surfaces, and the flat surfaces defining homologous cam tracks. The brewing device further comprises a sprinkler body movable into and out of a position for closing the top end of the cylinder housing, a sieve body movable into and out of a position for closing the bottom end of the cylinder housing, and cam disks rotatably mounted on the pivot pins for controlling the sprinkler body movement, the cam disks defining further cam tracks.
The compact construction of the brewing device is due particularly to the fact that the cylindrical brewing chamber is centrally located and the operational parts of the device surround the cylindrical brewing chamber. It is further enhanced by the fact that the sprinkler body is lifted only minimally from the cylindrical brewing chamber when it is moved out of the closing position by being pivoted in a radial movement. In addition, the sieve body may be vertically displaced downwardly parallel to the axis of the cylindrical brewing chamber so that the residual coffee grinds or tea leafs may be removed from the sieve body by a transversely displaceable wiper. However, it would also be possible to move the sieve body radially along a stationary wiper for this purpose. The control elements for moving the sprinkler body and the sieve body are arranged at opposite sides of the cylindrical brewing chamber and they are covered so that the outer contours of the device have only smooth surfaces. The required drive means and sensors are screened behind a cover plate. The brewing device may be dismounted from a wall or a mounting plate on which it is detachably held, and may be cleaned in a dish washer without its electrical parts.


REFERENCES:
patent: 5302407 (1994-04-01), Vetterli
patent: 5501138 (1996-03-01), Fava

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