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
Powder for layerwise manufacturing of objects
Method for treating hyperglycemia
Image forming apparatus, information processing method, and storage medium for generating screen information
Timepiece
Printer
Avalanche photodiodes having accurate and reproductible amplification layer
System and method for locating, tracking, and/or monitoring the status of personnel and/or assets both indoors and outdoors
  Randomly Featured Patents
Refastenable adhesive fastening systems for individually packaged disposable absorbent articles
Herbicidal tetrazolinones
System and method for producing a spool of tubular fabric for use in manufacturing paint roller covers
Spinal bone implant
Mechanism for counting film frames in camera with multiple exposure mode
Airbag device
Catalyst bed for use in a catalytic flameless heater device
Anchor having threads opposing unthreading
Book constructed of foam
Composite laminate circuit structure and method of forming the same