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Range Shifting of an Automatic Transmission

  • US 20110219905A1
  • Filed: 03/15/2010
  • Published: 09/15/2011
  • Est. Priority Date: 03/15/2010
  • Status: Active Grant
First Claim
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1. A system for shifting a transmission range, comprising:

  • a selector producing a signal representing a selected range; and

    an actuator having a primary state wherein a source of electric power shifts the transmission to the selected range in response to the signal, and a secondary state wherein a source of mechanical energy shifts the transmission to a Park range when the primary state is unable to shift the range.

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