Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Shifter with shape memory alloy and safety










Image Number 19 for United States Patent #8117938.

A shifter incorporates a shape memory alloy wire (SMA actuator) to control movement of a blocker to selectively prevent moving a shift lever (or pawl) out of its park position until predetermined vehicle conditions are met. A mechanical fuse (i.e., flexible overload spring) prevents damage to the SMA actuator where the shift lever (or pawl) can be frictionally stopped from movement despite the contraction of the SMA actuator. The control circuit for the SMA actuator includes a photo-electric switch for stopping electrical power to the SMA actuator when the shift lever is moved from its park position, and the shift lever includes structure for mechanically continuing to hold the switch open while out of park. Further, the control circuit is operably connected to an ignition key retaining mechanism so that the ignition key cannot be removed when the lever is not in its park position.








 
 
  Recently Added Patents
Nonvolatile semiconductor memory device and method for controlling the same
Method and system for associating a cell-sector with time-dependent location parameters
Tube lighting fixture
Flexible organic light emitting device and manufacturing method thereof
Resist underlayer film forming composition for lithography, containing aromatic fused ring-containing resin
Case for a tablet computer
Hepodxilin analog enantiomers
  Randomly Featured Patents
Simulated flying game apparatus
Water-and ion-conducting membranes and uses thereof
Medical syringe needle sheath holding device
Clock distribution apparatus with current sensed skew cancelling
Docking station to cool a computer
Ophthalmic lenses useful for the correction of presbyopia which incorporate high order aberration correction
Electron accelerator for ultra-small resonant structures
Bag holding system
Method and apparatus for processing outgoing bulk mail
Information recording medium cartridge