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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||222/207 ; 222/214 ; 222/383 ; 222/321|
|발명자 / 주소||
|인용정보||피인용 횟수 : 17 인용 특허 : 1|
A dispensing pump is characterized by an elastomer bulb configured as a cup and having a tubular neck portion extending from its base. The cup portion is inverted in a pump housing with the neck extending upwardly from the center of the cup base into a stem member where it concentrically and resiliently engages a nipple. The rim of the cup portion is positioned to overlie a dip tube inlet into the housing. In its quiescent position the bulb is slightly longitudinally compressed by forcing the stem, neck and center of the cup portion into the bulb chamber...
A dispensing pump for dispensing fluid contents from a container, said pump comprising a housing member, a stem and a bulbous elastomer diaphragm which fits into said housing member to define a variable volume pump chamber having a quiescent state wherein the chamber is at maximum volume, said diaphragm and said housing member defining inlet valve means for admitting fluid from said container into said pump chamber during expansion of said pump chamber and blocking flow communication between said pump chamber and said container during contraction of said...