| 摘要 |
A coffee brewer of the type having an outer fixed cylindrical tube and a fixed piston within the tube. A sliding cylinder slides in sealing contact between the outer cylinder and the piston. The sliding cylinder has a filter at the top thereof. A frame mounts the piston head and the outer cylindrical tube, and motor means are mounted on the frame with a pair of rotors rotatably mounted on the frame, one on either side of the outer cylindrical tube about a lateral axis at right angles to the axial axis of the outer and sliding cylindrical tubes. Each rotor includes an arcuate segment with gear teeth on the periphery thereof. Gear means connect the motor to the rotors for rotating the rotors, and a cam connector connects the sliding cylinder to the rotors for sliding movement of the sliding cylindrical tube during the brewing cycle. A spring mounted sweeper blade extends between a pair of arms, one on either side of the outer cylindrical tube, for sweeping the top of the sliding cylindrical tube and, therefore, the filter. A pour spout is mounted on the frame and is connected to a flexible tube communicating with the sliding cylinder for pouring the coffee from the interior of the sliding cylinder when the appropriate position is reached in the brewing cycle.
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