×

Motor end cap with interference fit

  • US 8,283,841 B2
  • Filed: 06/23/2010
  • Issued: 10/09/2012
  • Est. Priority Date: 06/23/2010
  • Status: Active Grant
First Claim
Patent Images

1. A rotary machine, comprising:

  • a stator including a plastic winding frame with an inner diameter that is honed at each end to be in-line with a stator inner diameter, such that the frame inner diameter can serve to pilot the positioning of a rotor within the stator; and

    a first end cap having a plastic piloting ring with an inner diameter seating a first bearing and with an outer diameter concentric with the inner diameter, the outer diameter of the piloting ring engaging the inner diameter of the plastic winding frame at a first end in a plastic-to-plastic interference fit such that the first bearing is concentric with the stator inner diameter;

    a second end cap having a plastic second piloting ring with an inner diameter of the second end cap seating a second bearing and with an outer diameter of the second end cap concentric with the inner diameter of the second end cap, the outer diameter of the second piloting ring engaging the inner diameter of the plastic winding frame at a second end in a plastic-to-plastic interference fit such that the second bearing is concentric with the stator inner diameter; and

    the rotor located within the stator between the first and second end caps, the rotor having an axial shaft seated by the first and second bearings concentric with the stator inner diameter such that the rotor is centered and aligned with the stator by the first and second end caps.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×