Disposable integrated bag and pump

Patent No. 7,896,202

Issued: March 1, 2011 
Filed:  July 2, 2009

Inventor: Shlomo Greenwald and Zipora Greenwald

A disposable pump for a collapsible reservoir has an upper chamber, a lower chamber and a seal base in between. The upper and lower chambers have flexible sections or bellows that expand or contract the chambers, and the seal base has a rigid rod that selectively forms a seal on an opening in the seal base between the upper and lower chambers. One of the two chambers has a nozzle and the other chamber has a top cap that leads in many embodiments to a collapsible bag reservoir. In at least one embodiment a solenoid overcomes the biasing force of a compression spring and lifts the seal base off the rigid rod. This opens the seal and assisting pushing out potentially very viscous liquids into the chamber that includes the nozzle and the liquid ultimately dispenses from the pump through the nozzle.

Reference to Related Applications

This application is a continuation-in-part of application Ser. No. 11/209,016, filed Aug. 22, 2005 and entitled "Disposable Integrated Bag and Pump". now issued as U.S. Pat. No. 7,578,419, which claimed the benefit under 35 USC 119(e) of U.S. Provisional Applications No. 60/642,311, filed Jan. 7, 2005, entitled "Beverage Dispenser with Disposable Pump", No. 60/682,107, filed May 18, 2005, entitled "Plastic Pump for Beverage and Soap Dispensing", and No. 60/700,824, filed Jul. 20, 2005, entitled "Super Quiet Disposable Pump". The aforementioned applications are hereby incorporated herein by reference.

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