Technologies

Miscellaneous : Recreation

Technologies

Bike Trailer Folds for Easy Storage

UW–Madison researchers have developed a new bicycle trailer design that stays attached while folding for easy storage. The trailer folds and pivots to align with the frame, allowing the user to store his/her bike effectively in a rack, apartment or tight space. The user can go from carrying a backpack, athletic bag or groceries to storing the entire bike/trailer setup in the same area the bike would occupy normally.

The trailer, which attaches to the fork rather than the axle, folds by pivoting up and forward to rest nearly on the seat, sides folded down. When folded it rests in a width thinner than the bike’s handlebars and extends only a few inches beyond the back tire.
P140233US01

New Dual Keyboard Console That Transmits Data to Two Player Pianos

A UW–Madison researcher has developed a modified version of the Moor-Duplex piano — a double keyboard console, which controls two player pianos using Disklavier-compatible technology. The console comprises two stacked 88-key piano keyboards with two complete sets of hammers that strike felt instead of strings when a key is played. A system of sensors and processors, together with a communication interface, allows the pianist’s keystrokes to be transmitted from the double keyboard console to the two player pianos, which then produce the actual notes. Additionally, there are a total of five pedals on the console: three that are found on traditional pianos, a fourth as found on Moor-Duplex pianos that allows a single key to activate multiple hammers and a fifth to control the exact behavior of the fourth pedal, among other functions. 
P100172US01

Portable and Lightweight Interlocking Crowd Control Barrier

UW-Madison researchers have developed a barricade connector that allows adjacent supports to be interlocked to prevent crowds from pushing the barricades apart. The newly-devised interlocking connector utilizes one of the two openings in any A-frame barrier structure to facilitate simple but effective connection of two barrier units. By connecting the units via one of the openings and using a typical barrier board in the other opening, pedestrians are unable to separate the individual barrier units or access the blocked area. The image below clearly illustrates the structure and function of the connector and barrier board. The barrier system is lightweight and portable, easy to manufacture and weather resistant.
P100151US01

Device and Method for Alerting a Runner When a New Pair of Shoes is Needed

UW-Madison researchers have developed a method and device to quantitatively measure wear on the midsole of a running shoe. Two impact sensors are placed in the heel of the shoe; one at the base, between the midsole and outsole, and one at the top, between the midsole and the upper. When the runner’s foot strikes the ground, the lower sensor receives the full force of the impact, while the force on the upper sensor is reduced by the cushioning midsole. As the midsole wears down, the difference in force measured by the two sensors decreases. A control circuit measures the difference, and when it falls below a predetermined threshold, the circuit activates a visual alert in the form of an LED.
P04212US