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. 01, 1980
Filed:
May. 19, 1978
Applicant:
Inventor:
Frank W Child, Eagle Bend, MN (US);
Assignee:
Child Laboratories Inc., Eagle Bend, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ; F04F / ;
U.S. Cl.
CPC ...
417241 ; 417417 ; 417551 ; 128D / ;
Abstract
A pump for moving fluid, as blood, having a cylindrical body defining a chamber. A piston movably located in the chamber carries a one-way valve movable to an open position to allow fluid to flow into the chamber and movable to a closed position to pump fluid from the chamber. One or more solenoids operate to reciprocate the piston in the chamber to pump fluid from the chamber. A one-way valve in an inlet passage to the chamber functions to allow the flow of fluid into the chamber and restrict reverse flow of the fluid out of the chamber through the inlet passage.