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:
Jan. 24, 1978
Filed:
Oct. 14, 1976
Applicant:
Inventors:
Herbert L Crosby, Plainville, MA (US);
Jacob P Den Hartog, Concord, MA (US);
Assignee:
Bird Machine Company, Inc., South Walpole, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B04B / ;
U.S. Cl.
CPC ...
233 / ; 233-7 ;
Abstract
Chatter is suppressed in a solids-liquid separating centrifuge by including, in an external connection to a holder of the speed change gearing between the centrifuge bowl and conveyor, a spring and mass means which is torsionally resilient about the axis of the connection such that it will vibrate about that axis under chatter conditions at the chatter frequency, and which has a spring rate within +40% to -25% of the spring rate at which the spring and mass means will vibrate in resonance with the vibration during chatter of the bowl-gearing-conveyor assembly.