Genesis Advanced Technology Inc.

1158990 B.c. Ltd.

Justin Michael Hebert

James Brent Klassen

Javier Peter Fernandez-Han

Kellen Devries

Timothy Davis Burson

David Michael Bernhardt

Benjamin McGhie

Bradley Graham Humble

Alexander Sean Li

Steven Giles Dal Bello

Sava Vujic

Michael Riley Gibney

Arthi Muniyappan

Benjamin Andrew Blackford

Sarah Marie Dueck

An energy return device for a midsole of a shoe comprises a resilient foam or matrix structure, such as a domed disk, around a cavity. The resilient structure is arranged to collapse into the cavity under foot strike pressure. The structure may initially resist the pressure primarily by compression forces directed around the cavity. As the cavity collapses these forces may provide decreasing vertical spring rate as the structure bends or as the forces become less vertical, causing the structure to stay more compressed through the midstride and energy return to be delayed until the user has moved further forward in their stance. At full collapse the material of the structure may resist further downward force of the user by direct compression. A lateral expansion limiter may resist lateral expansion to increase vertical force supplied by the compression forces around the cavity and reduce interference with other components. A support structure may help guide the collapse and increase spring force.

Shoe midsole with delayed energy return and lateral shear stability

A displacement device including an inner rotor and an outer rotor with meshing projections. Points on each rotor trace a hypotrochoidal path relative to the other. The tips of the outer rotor projections may contact the inner rotor at Top Dead Center (TDC) and Bottom Dead Center (BDC) to form higher and lower pressure regions. Various elements may shape other elements to form seals.

Hypotrochoid positive-displacement machine

Growing community of inventors

Airdrie, Canada

Justin Michael Hebert