Patent ID: 9631630
Date: 2017-04-25
CPC Classifications: F01C,F04C,F04D,F16C

Claim:
1. A scroll pump comprising: a housing; a fixed scroll and an orbiting scroll; a bearing carrier; a bearing carried by the bearing carrier; a shaft supported for rotation by the bearing, wherein the bearing carrier comprises a generally outer radial portion which is fixed relative to the pump housing and a generally inner radial portion which is fixed relative to the bearing, and wherein the bearing carrier is stiff in a radial direction between the generally inner radial portion and the generally outer radial portion and flexible in an axial direction for restraining radial movement of the bearing and allowing axial movement of the bearing, wherein the bearing carrier is internally biased to provide an axial force on the bearing in a first axial direction for resisting axial movement of the bearing in a second axial direction; and a spring located between the housing and one of the inner portion of the bearing carrier or the bearing for providing the axial force.