Coffee or tea filtering press
View Patent ↗A coffee or tea filtering press includes a hollow cylinder having top and bottom openings, a perforated removable cap which encloses the bottom opening, a removable piston which is inserted into said top opening and pressed downward to force liquid in the cylinder through the perforated cap, and a support to hold the press above the mouth of an open vessel.
1. A coffee or tea filtering press comprising:
a constant-diameter hollow cylinder having full-diameter top and bottom openings;
a removable perforated cap that encloses said bottom opening;
a removable air-tight piston that has an upper portion configured to be engaged by a user so that said piston, when inserted into said top opening and pressed with direct downward pressure exerted by the user, forces liquid in said hollow cylinder through said perforated cap; and
a support to hold said press above the mouth of an open vessel.
2. The press of claim 1 wherein said support extends radially outward from said hollow cylinder.
3. The press of claim 1 wherein said support extends radially outward from said perforated cap.
4. The press of claim 3 wherein said support has an upper cavity to collect liquid which leaks between said hollow cylinder and said perforated cap.
5. The press of claim 1 wherein said support is shaped to permit air to pass readily out of said open vessel when said press is resting on top of said vessel.
6. The press of claim 1 wherein:
said piston is capped with a flexible seal to engage the inside of said hollow cylinder; and
said seal has its maximum diameter at its lowest point in order to wipe clean the inside of said cylinder when said maximum diameter is pushed fully through said hollow cylinder with the cap removed.
7. The press of claim 6 wherein said piston has a stop which limits the maximum travel of said piston but permits the maximum diameter of said seal to extend beyond the bottom opening of said hollow cylinder with the cap removed.
8. The press of claim 1 wherein said perforated cap has multiple drain holes, adjacent to and radially external to a perimeter line defined by the outer circumference of the bottom of said hollow cylinder.
9. The press of claim 1 wherein said hollow cylinder is transparent.
10. The press of claim 1 which has a central bottom step which extends below the rim of said open vessel in order to keep said press from slipping off said vessel.
11. The press of claim 1 wherein said hollow cylinder has an inside diameter of approximately 2.25 inches and a length of approximately 5 inches.
12. A coffee or tea filtering press comprising:
a constant-diameter hollow cylinder having full-diameter top and bottom openings;
a removable perforated cap that, when engaged with said cylinder, encloses said bottom opening;
a removable air-tight piston that has an upper portion configured to be engaged by a user so that said piston, when inserted into said top opening and pressed with direct downward pressure exerted by the user, forces liquid in said hollow cylinder through said perforated cap wherein said piston is capped with a flexible seal to engage the inside of said hollow cylinder; and
said piston having a sufficient range of travel that allows a maximum diameter portion of said seal to extend beyond said bottom opening and wipe clean the inside of said cylinder when said cap is removed.
13. The press of claim 12 , and further comprising a support to hold said press above the mouth of an open vessel.
14. A coffee or tea filtering press comprising:
a constant-diameter hollow cylinder having full-diameter top and bottom openings;
a removable perforated cap that encloses said bottom opening wherein said perforated cap and said hollow cylinder are formed to allow said perforated cap to be attached to said hollow cylinder with a twist-lock;
a removable air-tight piston that is inserted into said top opening and pressed downward to force liquid in said hollow cylinder through said perforated cap; and
a support to hold said press above the mouth of an open vessel.
15. A coffee or tea filtering press comprising:
a constant-diameter hollow cylinder having full-diameter top and bottom openings;
a removable perforated cap that encloses said bottom opening wherein said perforated cap and said hollow cylinder are formed to allow said perforated cap to be attached to said hollow cylinder with a screw thread;
a removable air-tight piston that is inserted into said top opening and pressed downward to force liquid in said hollow cylinder through said perforated cap; and
a support to hold said press above the mouth of an open vessel.
16. A coffee or tea filtering press comprising:
a hollow cylinder having top and bottom openings;
a removable perforated cap that encloses said bottom opening;
a removable piston that is inserted into said top opening and pressed downward to force liquid in said hollow cylinder through said perforated cap; and
a stirring paddle, said paddle having an upper stop and a length, measured from its lower extremity to said stop, which is slightly less than the length of said hollow cylinder, such that said stop prevents the lower extremity of said paddle from touching said perforated cap during stirring.
17. The press of claim 16 , and further comprising a support to hold said press above the mouth of an open vessel.