Wahlert Catholic High School InvenTeam

Dubuque, IA
Universally Fitting Anti-Rollback Device for Wheelchairs

The Wahlert Catholic High School invented Feltes One-Way - a universally fitting, anti-rollback device for manual wheelchairs. This device prevents manual wheelchair users from rolling backwards on inclines using a
tooth-locking mechanism. It is estimated that in the United States there are over 100,000 annual emergency room visits due to wheelchair related injuries from the 1.7 million wheelchair users outside of medical
institutions. The Feltes One-Way can help prevent these injuries and increase the independence of manual wheelchair users. The device is estimated to cost $75 per wheelchair.

Watch their 2015 EurekaFest Video


June 12, 2015

We are ready for Lemelson-MIT Eurekafest! Our Feltes One Way prototype is working. Our team is excited to show what we have learned!!

May 21, 2015

Our latest prototype is complete! We have a fully working Feltes One Way. We have finished our design in Solidworks and are looking at testing the components.

April 13, 2015

Hello everyone!

Crazy to believe we're already into April! March flew by! Here's a recap of what the Wahlert Catholic InvenTeam was up to in March:

1. Community Showcase Sunday March 15th - The community was invited to the Wahlert cafeteria to view our presentation and see our work. Our 3D printer was another highlight on on display. We had a nice crowd (mostly family) including a reporter from our tristate newspaper. To our surprise, we also received some donations. 

March 1, 2015

Hello everyone!

Happy March! February flew by, but was productive! 

Here's a recap of our month:

- Planned and cancelled our February presentation. We planned to present at our Holy Family Catholic School System's Waffle Breakfast and Art show on Sunday, February 1st. However, we received a nice snow storm and the event was cancelled. So was school the next day. 

February 1, 2015


January 25, 2015


What a crazy past week and a half it's been! Yesterday the members of the FTC robotics teams, who are also on our InvenTeam,  Team 9025 (girls) and Team 7400 (guys) competed at the state qualifing event. The guys team qualified for state and won the award for their engineer notebook. While the girls were invited to the semi-final qualifer, the Wildcard! An exciting day of robotic competitions complete with a stop at Dairy Queen on the way home!

Back to business...

January 3, 2015

December 16, 2014

It has been a while since we have posted a blog. All of us have been extremely busy with activities over the past couple of months on top of working on our Lemelson-MIT project. We have successfully printed a 3-D model from our middle school's 3-D printer (applause).  We have met with our mentor, Rich, a couple times and have tweaked and reworked our design and have printed two more models. It isn't perfect, but we are making progress! (Pictured: 3-D printing)

October 29, 2014

Hello everyone! We are finally are up and running with our blog! After our parent meeting and meeting yesterday, we began a rough outline of our tasks, brainstormed our "To-Do" lists, and split into groups: Financial, Communication, Advertising, and Technical. We are planning to create business cards with our information to hand out to interested people and businesses. Basically, we have a lot of stuff to do. Our main goal right now is to finish our prototype.