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SHIFTER WITH ACTUATOR INCORPORATING SHAPE MEMORY ALLOY

  • US 20080006112A1
  • Filed: 07/03/2007
  • Published: 01/10/2008
  • Est. Priority Date: 07/05/2006
  • Status: Active Grant
First Claim
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1. In a park lock/brake transmission shift interlock apparatus including a base, a shift lever pivoted to the base for movement between a plurality of gear positions including a park position, a pawl on the shift lever selectively engageable with notches on the base to control movement of the shift lever between the gear positions, a lever-position-controlling component, and a control circuit for controlling operation of the shifter based on predetermined vehicle conditions being met, an improvement comprising:

  • an actuator for operating the lever-position-controlling component, the actuator incorporating shape memory alloy wire operably connected to the control circuit and to the lever-position-controlling component for locking the shift lever in a selected one of the gear positions until the predetermined vehicle conditions are met.

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