The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2005
Filed:
Dec. 19, 2002
Applicants:
Michael Shuler, Ithaca, NY (US);
Aaron Sin, Brighton, MA (US);
Inventors:
Michael Shuler, Ithaca, NY (US);
Aaron Sin, Brighton, MA (US);
Assignee:
Cornell Research Foundation, Inc., Ithaca, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B035/02 ;
U.S. Cl.
CPC ...
Abstract
A micropump has two chambers separated by an actuator for causing fluid to flow in the chambers. Each chamber is equipped with a ball that acts as a valve for allowing flow in a desired direction. The balls are heavier than the fluid being pumped, and reside at an interface between the chambers and passages feeding fluid into the chambers and provide a tight seal between the chambers and passages feeding the chambers when fluid pressure forces the fluid back toward the feeding passages.