|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||222/321 ; 222/385 ; 222/40216 ; 141/20|
|발명자 / 주소|
|인용정보||피인용 횟수 : 10 인용 특허 : 6|
A dispensing pump is adapted for pressure filling and includes a fluid filling passage which remains sealingly closed during pumping operation by the provision of an annular valve skirt in sealing engagement with a wall of the fluid filling passage, such skirt inwardly flexing during charging the container permitting the charged fluids to by-pass the valve and enter the container. The valve skirt depends from either the plunger head or from the plunger. When depending from the plunger, the valve skirt functions as a guide element for the plunger head tog...
A dispensing pump of the pressure accumulating type, comprising a pump body having an upstanding stationary piston, said body being adapted for securement in a fluid tight manner on a container of product to be dispensed, reciprocable plunger means comprising an annular plunger resiliently urged into a fully raised position above said pump body and being mounted on said piston for reciprocation to define therewith a variable volume pump chamber, a valve controlled inlet passage in said piston, said plunger means further comprising a plunger head slideabl...