Filter which fits into top of tea or coffee pot has piston with piston rod which is attached to its top and does not extend below it

摘要

The filter (1) fits into the top of a tea or coffee pot. It has a piston (10) which slides down through its inner chamber (12). A piston rod (11) is attached to its top and does not extend below it. An Independent claim is included for a tea or coffee pot fitted with the filter.