|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||210/493.1 ; D7/400 ; D7/667 ; 99/306 ; 210/508 ; 428/153 ; 493/155 ; 493/338|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 25 인용 특허 : 0|
The invention relates to filter cups adapted for use in Melitta style coffee makers made of a unitary sheet of filter paper having integral fluted sides flaring outwardly from a stationary bottom and to a method and apparatus for making the same. The apparatus comprises complementary die members adapted to cut and flute the filter discs having central apertures, one of which is affixed to a heating and drying tube having the same diameter as the aperture. A plunger having a stretching head is passed through the other aperture to push the cut and formed f...