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:
Dec. 29, 1987
Filed:
Oct. 30, 1986
Applicant:
Inventors:
David R Shouldice, Lakewood, CO (US);
Dennis M Treu, Morrison, CO (US);
Assignee:
Cobe Laboratories, Inc., Lakewood, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
137171 ; 55219 ; 55189 ; 55200 ; 137386 ; 13762415 ;
Abstract
Fluid flow apparatus comprising a housing defining a chamber, a chamber inlet and a chamber outlet for the flow of liquid therethrough, a level sensor providing a control signal having a magnitude related to the level of liquid in the chamber, and a valve hydraulically connected to control flow into the inlet or out of the outlet, and controller operably connected to alternately open and close the valve in a duty cycle responsive to the magnitude of the signal.