EXTRACTION SLEEVE COFFEE MAKING APPARATUS
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United States of America Patent
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Issued Date -
Nov 12, 2020
app pub date -
May 26, 2020
filing date -
Nov 27, 2017
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Abstract
Described is a system for roasting, grinding, brewing and dispensing coffee comprising a grinding and infusion assembly comprising a tubular extraction sleeve, infuser head and blade grinder, wherein the system further comprises a first seal, being a linear shaft seal for preventing a flow of coffee brew between the infuser head and inner surface of the extraction sleeve during extraction of the coffee grounds; a second seal, being a static seal for preventing a flow of coffee brew between the infuser head and grinder spindle when the grinder is not rotating and in the retracted position; and a third seal, being a rotary shaft seal for preventing the movement of coffee grounds between the infuser head and grinder spindle when the grinder is rotating in the extended position.
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