Najma Khan,Michael Anthony Ronzoni,Chia-Hsin Sung,Richard W. Benner
申请号：
US13873054
公开号：
US20140322410A1
申请日:
2013.04.29
申请国别(地区):
US
年份:
2014
代理人:
摘要：
To make espresso, a plunger forces heated liquid from a plunger cylinder to a coffee container. The resulting brewed liquid is allowed to pass through an expansion pressure relief valve. The expansion pressure relief value maintains a pressure sufficient for brewing espresso as force on the plunger forces the liquid to flow through the coffee container and through the expansion pressure relief valve.
