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Brewer

  • US 5,638,739 A
  • Filed: 07/08/1996
  • Issued: 06/17/1997
  • Est. Priority Date: 07/08/1996
  • Status: Expired due to Term
First Claim
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1. A brewer comprising a frame, a first upright cylindrical tube mounted to the frame and having an upper portion with a smooth inner surface and an open top, a second cylindrical tube slidable within the first cylindrical tube in a reciprocating travel cycle along an axial axis of the first and second cylindrical tubes, the second cylindrical tube including a filter means at the top thereof, gasket means provided between the first and second cylindrical tubes to ensure sealing contact between the sliding first and second tubes, the uppermost position of the second cylindrical tube in the travel cycle occurring when the filter means is flush with the top of the first cylindrical tube, a piston head mounted to the frame within the second cylindrical tube and gasket means provided between the second cylindrical tube and the piston head to ensure sealing contact therebetween, a pour spout outlet means in the second cylindrical tube located below the top of the piston head for most of the travel of the second cylindrical tube but above the piston head in the uppermost segment of the travel cycle of the second cylindrical tube, the improvement comprising motor means mounted on the frame, a pair of rotors rotatably mounted on the frame, one on either diametrically opposite positions of the first and second cylindrical tubes about a lateral axis at right angles to the axial axis of the first and second cylindrical tubes, each rotor including an arcuate segment with gear teeth on the periphery of the arcuate segment, gear means connecting the motor means to the rotors for rotating the rotors, and means connecting the rotors to the second cylindrical tube for effecting the reciprocating vertical travel cycle to the second cylindrical tube.

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