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:
May. 26, 1987
Filed:
Jul. 24, 1985
Ikuo Harashima, Maebashi, JP;
Isao Morimura, Azuma, JP;
Sanden Corporation, Gunma, JP;
Abstract
A brewing apparatus includes a vertically movable cylinder with an open top and bottom, a piston mounted for reciprocation down into such cylinder and a heated liquid supply device for discharging brewing liquid into the open top of the cylinder. A brewing cavity is horizontally reciprocal beneath the cylinder between a brewing position and a discharge position. A ground beverage material supply delivers material into the brewing cavity when the cavity is disposed at a material supplying position located intermediate the brewing position and the discharge position. A seal element which is disposed on the outer peripheral surface of the piston to obtain sealing between the piston and cylinder comprises a ring portion affixed to the piston and the flange portion extending radially outwardly from the end portion of the ring portion. A cut out space is formed on the inner surface of the flange portion which connects with the ring portion.