This April 2013 photo provided by Joe Kloptic shows a prototype called the Funicular in Madison, Wis. A University of Wisconsin-Madison engineering professor, students and others helped come up with ... more 
This April 2013 photo provided by Joe Kloptic shows a prototype called the Funicular in Madison, Wis. A University of Wisconsin-Madison engineering professor, students and others helped come up with it after getting in touch with a local elementary school that wasn't handicapped accessible. The platform uses rollers and a modified chain hoist that allows the wheelchair users to use their own energy to move and down up a stairways. (AP Photo/Joe Kloptic) less 
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Associated Press | Photo By Joe Kloptic
Fri, May 24, 2013 3:45 AM EDT