×

Cap mounted drive for a brushless DC motor

  • US 5,939,807 A
  • Filed: 12/16/1997
  • Issued: 08/17/1999
  • Est. Priority Date: 12/16/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. An integrated electric motor and drive system comprising:

  • a substantially annular housing having first and second ends;

    a rotor supported for rotation in the housing;

    a stator disposed in the housing and surrounding the rotor;

    a drive circuit electrically connected to the stator, the drive circuit including a plurality of switching devices for generating pulsed electrical energy for causing rotation of the rotor;

    a first end cover secured to the first end of the housing and having a first bearing for supporting the rotor in rotation; and

    a second end cover secured to the second end of the housing, the second end cover supporting the drive circuit within a volume defined between the housing and the second end cover, the second end cover having a second bearing for supporting the rotor in rotation, the drive circuit being electrically insulated from the second end cover.

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