Fluid aspiration-collection apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 6, 1996
Grant Date -
N/A
app pub date -
Oct 21, 1994
filing date -
Oct 26, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention pertains to a fluid aspiration-collection apparatus for aspirating and collecting a fluid into a suction chamber through a fluid inlet communicating with the suction chamber in the case, and for discharging the fluid through a fluid outlet after completion of fluid aspiration. A primary object of the present invention is to provide an apparatus which is simple in construction and is capable of aspirating the fluid at a constant pressure. The apparatus of the present invention comprises a case having a suction chamber formed, interior of which communicates with a fluid inlet and a fluid outlet, a moving plate constituting a part of a wall section of the suction chamber and movably disposed within the case; and a cylinder in which a piston is airtightly and movably inserted and in which a vacuum chamber is created by relative movement of the piston or itself; the piston and the moving plate being connected to move together; the cross sectional area of the piston being set smaller than the projected area in the direction of movement of the moving plate; and the back side of the piston and the moving plate communicating with the atmosphere.
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