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:
Feb. 17, 1976
Filed:
Jun. 24, 1974
Applicant:
Inventor:
Charles B Willock, Milwaukie, OR (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ; F04B / ; F04B / ;
U.S. Cl.
CPC ...
417 12 ; 417412 ; 417477 ; 251-9 ;
Abstract
A blood pump system, typically employed in dialysis, includes a blood pump for withdrawing blood via a single hypodermic needle and valve means operated in synchronism therewith for returning treated blood via the same hypodermic needle. The operation of the blood pump is cyclically interrupted and the valve means opened for the alternate withdrawal and return of blood.