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:
Jun. 06, 2000
Filed:
Aug. 29, 1997
Jerry W Hunt, Murray, UT (US);
Dennis M Greenlee, Salt Lake City, UT (US);
Lyn Maurice Greenhill, Roseville, CA (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
Excessive vibration in industrial mixers such as flotation cells and draft tube mixers is attenuated by connecting a vibration dampening device to a rotor or impeller which is disposed in a mixing tank for pumping a nonhomogeneous fluidic material placed in the tank. In a draft tube mixer, where the rotor is connected to a drive shaft in turn connected to a motor for rotating the rotor, the vibration dampening device is connected to the shaft on a side of the rotor opposite the motor. In a froth flotation cell, if the rotor is hollow, the vibration dampening device is disposed inside a pipe in turn mounted inside the rotor along an axis thereof. The vibration dampening device takes the form of a tuned mass dampener tuned to a resonance frequency of the particular mixing apparatus.