Pumping device for liquid containers

Details Pumping device for liquid containers Pumping device for liquid containers

1989-04-18

1991-01-22

Skaggs, H. Grant

Dispensing

Resilient wall

Fluid pressure generating pump or pulsator and/or removable...

222318, 222383, 222401, B65D 3700

Patent

active

049864521

ABSTRACT:
A pumping device for a liquid container comprises a bellows body with upper and lower plates. The upper plate has a suction port adapted to be communicated with the atmosphere, , and the lower plate has an exhaust port adapted to be communicated with an interior of the liquid container a suction valve is adapted to open and close the suction port; and a bellows return spring is adapted to expand the bellows body. A stop valve assembly is arranged in the bellows body and forms a bypath for communicating the interior of the bellows body with the interior of the container. The stop valve assembly comprises a flap valve adapted to allow the air only to flow from the bellows pump to the container through to air port during operation of the bellows body, and a valve structure for closing the bypath, the valve structure being operated under the conditions synchronized with contraction and expansion motion of the bellows body in such a manner that is closes the bypath just after starting the contraction of the bellows body but opens the same just before finishing the expansion of the bellows body. The stop valve assembly may be replaced with one comprising a case having a main path and a bypath for communicating the interior of the bellows body with the interior of the container, a stop valve arranged in the main path so that it allows the air only to flow from the bellows body to the container, a valve structure arranged in the bypath, and a device for operating the valve structure.

REFERENCES:
patent: 2680477 (1954-06-01), Schira
patent: 3905520 (1975-09-01), Nishioka
patent: 4113147 (1978-09-01), Frazier et al.
patent: 4174053 (1979-11-01), Schimizu
patent: 4238054 (1980-12-01), Chen
patent: 4274562 (1981-06-01), Medeiros et al.
patent: 4310104 (1982-01-01), Takatsuki
patent: 4344548 (1982-08-01), Frazier
patent: 4512246 (1985-04-01), Chappell et al.
patent: 4705195 (1987-11-01), Heck

Affiliated with

Also associated with

Rating

Pumping device for liquid containers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pumping device for liquid containers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pumping device for liquid containers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1549961