Breast pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 4, 2009
Grant Date -
Dec 22, 2005
app pub date -
Jun 22, 2004
filing date -
Jun 22, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A portable pumping device for drawing milk from a human breast includes a breast shield adapted to fit over a nipple of a breast and a flow line coupled to the breast shield. The flow line is adapted to allow air to flow there through a pump coupled to the breast shield via the flow line. The pump includes a pump intake and a pump exhaust and is operable to create a pressure drop between the nipple and the pump, wherein the pressure drop creates a suction at the breast shield by lowering the pressure of air in the flow line. A blow-back valve is disposed between the flow line and the pump. The blow-back valve has a valve piston disposed in a valve housing The valve housing includes a flow line aperture that communicates via the flow line with the breast shield, a valve inlet adapted to communicate external to the flow line, and a valve exhaust adapted to communicate external to the flow line. The valve piston is adapted to alternatively seal the valve inlet and the valve exhaust.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully