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:
Nov. 04, 1997
Filed:
Mar. 14, 1996
Robert Giebeler, San Jose, CA (US);
Piramoon Technologies, Inc., Santa Clara, CA (US);
Abstract
In a centrifuge having a central stator with a peripheral rotor, an improved suspension for the rotor is disclosed. The central stator is provided with a bore coaxial to the axis of rotation of the rotor. The rotor of the centrifuge motor has a quill shaft support member extending into and rotating within the coaxial bore of the stator. A quill shaft attaches at the bottom of the quill shaft support member and extends upward above the rotor of the centrifuge motor to support a fastening hub for the centrifuge rotor. The rotor of the centrifuge is detached from the rotor of the centrifuge motor so as to define a spatial interval between the supported spinning rotor and the rotor of the motor driving the centrifuge. The centrifuge rotor attaches at the hub and depends downward from the hub with the spatial interval being defined between the rotor of the motor and the rotor of the centrifuge. It is noted that the center of gravity of the attached centrifuge rotor is well below the hub so that support of the rotor is inherently stable. In the preferred embodiment, heat transfer shielding material is placed over the rotor of the motor. Operation is quite and smooth with the inevitable rotor imbalances being absorbed by quill shaft flexure.