Vacuum Pump
AssigneeEdward, LLC
InventorsBarrie Dudley Brewster, Martin Ernst Tollner, Paul David Flower
Life of this patent
Estimating the term…
Abstract
A pump insert (50) for supporting a rotor (14) of a pump comprises an annular resilient support (52) for engaging the body (26) of the pump, the support (52) extending about a rolling bearing (10) having an inner race (12) for engaging the rotor (14), an axially preloaded outer race (16) fixed to the support (52), and a plurality of rolling elements (18) located between the races. During assembly, the rolling bearing (10) can be accurately positioned within the support (52) so that there is a very low tolerance stack-up when the insert (50) is fitted to the rotor (14). Consequently, the position of the rotor (14) will hardly change, if at all, when the rolling bearing (10) is replaced during servicing of the pump.
Claims13
1-7. (canceled)
An insert for insertion around a rotor of a pump, the insert comprising a metallic, annular resilient support comprising inner and outer annular portions connected by a plurality of flexible members, the resilient support extending about a rolling bearing having an inner race, an axially preloaded outer race comprising an outer surface fixedly attached to an inner surface of the inner annular portion of the resilient support by an adhesive, and a plurality of rolling elements located between the races.
(canceled)
The insert according to claim 7, wherein the metallic material comprises one of tempered steel, aluminium, titanium, phosphor bronze, beryllium copper, an alloy of aluminium and an alloy of titanium.
(canceled)
(canceled)
A vacuum pump comprising a body and a rotor supported for rotation relative to the body by an insert inserted around the rotor, the insert comprising a metallic, annular resilient support comprising inner and outer annular portions connected by a plurality of flexible members, the resilient support extending about a rolling bearing having an inner race, an axially preloaded outer race having an outer surface fixed to an inner surface of the inner annular portion of the resilient support so as to prevent axial movement of the rolling bearing relative to the resilient support, and a plurality of rolling elements located between the races, wherein the outer race is axially preloaded based on an axial load provided by a member that is separated from the vacuum pump.
Dependencies are inferred from the claim text.