Bunn-o-matic Corporation

Jason Ray Lieving

Suresh Radhakrishnan

Daniel Hansen

Jesse Darley

Todd James Bakken

Jesse Charles Darley

Jeffery W Kadyk

Rex Allen Rogers

Knute Alstad

John Bodjack

Dan Hansen

An extraction assembly for use in an automatic brewer. The extraction assembly controllably extracts espresso beverage from a quantity of brewing substance. A brew chamber of the extraction assembly is removable for exchange with another brew chamber of different brew volume, having enhanced structures, or for replacement and repair. A heating element may be in close proximity to the brew chamber. Heat from the heating element can be brought directly to the area in which the coffee is brewed to help maintain a more consistent, tighter tolerance temperature and faster recovery between brew cycles.

Brewer

The present disclosure includes an extraction assembly for use in an automatic espresso brewer. The extraction assembly includes components and methods for controllably extracting espresso beverage from a quantity of brewing substance. The components, assemblies, and methods facilitate improved control and operation of the extraction assembly and improve the reliability of the extraction assembly. The brewing substance is compacted between a pair of opposing pistons. Compacting force is monitored through at least one sensor carried on the extraction assembly to provide a signal to a controller. A predetermined compacting force may be programmed into the system for all brewing cycles or dependent upon the brewing substance used. The pair of pistons operates relative to a brew chamber for use in the espresso extraction process. The pistons provide compacting force and boundaries within the chamber and facilitate removal of a spent brewing substance puck at the end of the brewing cycle. Compacting force is monitored at the start of the brewing process and a predetermined force is required before the brewing process can be started. During the brewing process compacting force can be maintained and controllably adjusted. A variety of sensor methods and locations can be used to detect and monitoring compacting force.

Brewer with compacting force activation

Brewer with compacting force activation and method of using same

A peristaltic pump assembly and system that facilitates reliable and efficient engagement and removal of a flexible tube. A stator is pivotally retained on a structure and cooperatively operated by a lever arm and cam to engage and disengage the stator from the tube and a corresponding rotor. The stator pivots at a point distal from a point of rotation of the rotor and the lever arm moves about a fixed rotation axis to engage and disengage the stator with the tube relative to the rotor.

Peristaltic pump

Growing community of inventors

Springfield, IL, United States of America

Jason Ray Lieving