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:
Mar. 24, 1992
Filed:
Mar. 11, 1991
David A Henderson, Monroeville, PA (US);
Contraves Goerz Corporation, Pittsburgh, PA (US);
Abstract
A bearing system comprised of a base made of a magnetic material. The bearing system is also comprised of an element disposed adjacent the base. The element is comprised of a device for creating a separation force and a positive stiffness between the element and the base such that a gap is formed therebetween. The element is also comprised of a device for generating magnetic flux such that a closed magnetic flux circuit is formed through the element, the base and the gap creating a preload force and a negative stiffness between the element and the base. The positive stiffness is greater than a negative stiffness, and the preload force essentially balances the separation force. In a preferred embodiment, the creating device includes a device for flowing fluid through the element such that a fluid pressure is formed between the element and the base, resulting in the presence of the gap and the positive stiffness.