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. 23, 2019
Filed:
Mar. 28, 2014
Asepco, Mountain View, CA (US);
Yoram Rozy, Sunnyvale, CA (US);
Mark R. Embury, Fremont, CA (US);
Joseph Benjamin Morgan, Castro Valley, CA (US);
ASEPCO, Mountain View, CA (US);
Abstract
Magnetically coupled mixer having an impeller magnetically coupled to a drive shaft and thrust bearings that support the impeller. The drive shaft can be moved along its axis, and an upwardly directed axial force is applied to the drive shaft to partially offset downward forces exerted by the impeller and thereby reduce friction between the thrust bearing surfaces while maintaining contact between them. In one disclosed embodiment, the force is applied to the drive shaft by a pair of magnets arranged so that the magnetic fields interact to produce the force, and the magnitude of the force is controlled by adjusting the distance between the magnets. The forces exerted by the impeller can be monitored and utilized in controlling the magnitude of the force applied to the shaft.