Food or edible material: processes – compositions – and products – Processes – Extraction utilizing liquid as extracting medium
Patent
1987-02-24
1989-01-10
Jenkins, Robert W.
Food or edible material: processes, compositions, and products
Processes
Extraction utilizing liquid as extracting medium
99289R, 99302P, 426231, A23F 500
Patent
active
047972963
ABSTRACT:
The invention provides a piston-cyclinder-assembly for a coffee brewing apparatus, the assembly comprising a cylindric cavity serving as a brewing chamber, a closing member mounted on the cylindric cavity at one end thereof, and a piston which can be displaced into and retracted from the brewing chamber at the other end. The piston is equipped with internal brewing water channels leading to the front face of the piston and connected to a brewing water connector. The closing member has plate-like shape and is fixed against movement in axial direction of the brewing chamber but is pivotally mounted near the cylindric cavity. To drive the piston into the cavity and to retract it, and to pivot the closing member, first and second stepping motors, respectively, are provided which are operatively connected to a control unit. Another embodiment is provided with a normal electric motor to drive the piston and with a pressure sensor. As soon as the piston exerts a preselected pressure on the coffee powder in the brewing chamber, the displacement of the piston is stopped.
REFERENCES:
patent: 3349690 (1967-10-01), Heier
patent: 3565641 (1971-02-01), King
patent: 3660117 (1972-05-01), Neely
patent: 4457216 (1984-07-01), Dremmel
Franzolin Jean-Paul
Meier Hermann
Cafina AG
Jenkins Robert W.
LandOfFree
Piston-cylinder-assembly for a coffee brewing apparatus and a me does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piston-cylinder-assembly for a coffee brewing apparatus and a me, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston-cylinder-assembly for a coffee brewing apparatus and a me will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2107125