Bearings for use in negative-pressure environments

Details Bearings for use in negative-pressure environments Bearings for use in negative-pressure environments

1991-04-22

1991-12-03

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

41742313, 384492, 384518, 384907, F04B 3902, F16C 3362

Patent

active

050696033

ABSTRACT:
A vacuum pump includes a rotor and at least one bearing that is supplied with a lubricant and that is situated, during operation, in a negative-pressure environment. In order to extend the useful life of the bearing, it is proposed that the bearing is formed from a ceramic material.

REFERENCES:
patent: 4093397 (1978-06-01), Lovelady
patent: 4140441 (1979-02-01), Patterson
patent: 4327139 (1982-04-01), Schaefer et al.
patent: 4529324 (1985-06-01), Champagne et al.
patent: 4652219 (1987-03-01), McEachern, Jr. et al.
patent: 4770549 (1988-09-01), Rokraku
patent: 4792244 (1988-12-01), Yamashita et al.

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