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:
Feb. 16, 1999
Filed:
Oct. 03, 1997
Kevin Wasson, Enfield, NH (US);
Aesop, Inc., Concord, NH (US);
Abstract
A rotary hybrid bearing that utilizes both hydrostatic and hydrodynamic principles to support a rotatable shaft in which lubricating fluid is fed through orifices or other flow restriction devices to a plurality of recesses, and finally across lands and out of the bearing. The shaft is rotated in such a direction as to pump the fluid back through grooves from lands to recesses, thereby reducing the flow rate of lubricant through the bearing. The recesses are located at an angular position from lands such that a force is generated by hydrostatic action that substantially cancels the destabilizing force generated by hydrodynamic action, thereby greatly enhancing the stability of the bearing and enabling higher rotational speeds.