Bearings – Linear bearing – Fluid bearing
Patent
1991-03-11
1992-03-24
Footland, Lenard A.
Bearings
Linear bearing
Fluid bearing
384446, 384100, 384124, 384912, F16C 3206
Patent
active
050982036
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.
REFERENCES:
patent: 4726689 (1988-02-01), Pollock
patent: 4898480 (1990-02-01), Raj et al.
patent: 4984909 (1991-01-01), Shirotori
patent: 5010794 (1991-04-01), Klager
Contraves Goerz Corporation
Footland Lenard A.
Schwartz Ansel M.
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