Patent ID: 7435067

Claim:
A scroll machine comprising: a first scroll member having a first end plate and a first spiral wrap projecting outwardly from said first end plate; a second scroll member having a second end plate and a second spiral wrap projecting outwardly from said second end plate, said second scroll wrap being intermeshed with said first scroll wrap; a crankshaft engaging one of said scroll members for causing said scroll members to orbit relative to one another whereby said spiral wraps will create pockets of progressively changing volume between a suction pressure zone and a discharge pressure zone; and a rotor assembly attached to said crankshaft, said rotor assembly comprising: a rotor body attached to said crankshaft; a first counterweight disposed at a first end of said rotor body; a second counterweight disposed at a second end of said rotor body; an attachment member extending through said first counterweight, said second counterweight, and said rotor body, said attachment member engaged with said first and second counterweights to clamp said rotor body between said first and second counterweights.