The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 1999
Filed:
Jun. 09, 1998
Akio Kawabata, Isesaki, JP;
Sanden Corp., Isesaki, JP;
Abstract
A coffee brewing apparatus has a first cylinder, having a top opening and a bottom opening. A vertically movable second cylinder containing ground coffee, having a top opening and a bottom opening, is disposed below the first cylinder coaxially therewith. A vertically movable upwardly urged plunger, having a top head and a bottom head, is disposed through the bottom opening of the first cylinder, coaxially therewith, in a manner that the top head is sealingly and slidingly fitted in the first cylinder and the bottom head is adapted to be sealingly and slidingly fitted in the second cylinder through the top opening thereof. The plunger has a hot water exit channel vertically therethrough and a pressure-operated hot water release valve disposed in the channel. When water is provided in the first cylinder on the top head of the plunger and pressurized, the plunger is pressed down so that the ground coffee in the second cylinder is compacted by the plunger before the valve opens and pressurized hot water in the first cylinder is released through the hot water release channel to be poured onto the ground coffee.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile