|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/371 ; 215/261 ; 215/306 ; 215/308|
|발명자 / 주소|
|인용정보||피인용 횟수 : 43 인용 특허 : 0|
A closure device for fermentation test tubes or flasks (vessels) comprises a cylindrical cap which is either molded integrally with the vessel as one piece or is molded separately and is snugly fitted over the neck of the vessel, in a fashion which not only allows for free gaseous flow between the contents of the vessel and the ambient atmosphere but also facilitates easy access to the contents of the vessel without having to detach the closure from the vessel. Particular features of the cover permit manipulation with the fingers of the hand holding the ...
A closure for a fermentation vessel having an upper open end neck portion, comprising: (a) a base member adapted to releasably attach to said neck portion in air-tight relation and having a planar wall portion shaped to cover the open end of the neck portion of said fermentation vessel, a retaining portion extending downwardly from said wall portion and shaped to releasably grasp said neck portion member in an air-tight relation, a nesting portion extending upwardly from said wall portion and shaped to permit nesting of components of a filtration-vent as...