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:
May. 13, 1997
Filed:
Oct. 19, 1995
Walter J Braun, Sr, Aurora, CO (US);
Anthony A Boiarski, Upper Arlington, OH (US);
Walter J Braun, Jr, Aurora, CO (US);
Steven P Braun, Peoria, AZ (US);
Other;
Abstract
An apparatus for detecting changes in the viscosity of a fluid comprises a cartridge having a fluid receiving/dispensing reservoir, one or more fluid-receiving chambers, and a conduit that permits fluid communication between the fluid receiving/dispensing reservoir and the fluid-receiving chamber. Fluid is introduced into the cartridge through an injection port and fills the reservoir, moving from the reservoir through the conduit into the chamber. An air vent/fluid plug device in fluid communication with the chamber permits air to exit while the fluid enters the system but prevents the fluid from leaving after the chamber is filled. A freely movable ferromagnetic material is placed within the fluid-receiving chamber and is caused to move by an electromagnet. Changes in the viscosity of the fluid are detected by determining the position of the ferromagnetic material in the fluid-receiving chamber.