US 9,808,073 B1
Exoskeleton system providing for a load transfer when a user is standing and kneeling
Keith Everett Maxwell, Tampa, FL (US); Patricia Ann Aelker, Longwood, FL (US); Gavin A. Barnes, Saint Cloud, FL (US); Antoine J. Bell, Orlando, FL (US); Robert Brady, Sarasota, FL (US); Erik Holmen, Sarasota, FL (US); Alexander Hussain, Sarasota, FL (US); and Joel Chartier, Bradenton, FL (US)
Assigned to Lockheed Martin Corporation, Bethesda, MD (US)
Filed by LOCKHEED MARTIN CORPORATION, Bethesda, MD (US)
Filed on Jun. 19, 2015, as Appl. No. 14/744,892.
Claims priority of provisional application 62/014,430, filed on Jun. 19, 2014.
Int. Cl. B25J 9/00 (2006.01); A45F 5/00 (2006.01)
CPC A45F 5/00 (2013.01) [B25J 9/0006 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A lower extremity exoskeleton system having a standing mode and a kneeling mode comprising:
a femur component;
a hip joint to displace an external load experienced by a user above a waist of the user, the hip joint provides for three degrees of freedom of movement of the femur component attached to the hip joint;
a knee joint comprising a knee joint rocker arm that extends in a forward direction of the lower extremity exoskeleton system, the knee joint rocker arm configured to extend beyond a knee of the user;
a fibula component extending from the knee joint to a foot assembly; and
the foot assembly comprising a ground rocker arm that connects to the fibula component, the foot assembly configured to allow footwear of the user and the ground rocker arm to both contact a ground surface;
wherein, in the kneeling mode, the knee joint rocker arm is configured to contact the ground surface, and the lower extremity exoskeleton system is configured to transfer a load beginning at the hip joint through the femur component, through the knee joint, and through the knee joint rocker arm to the ground surface; and
wherein, in the standing mode, the lower extremity exoskeleton system is configured to transfer the load beginning at the hip joint through the femur component, through the knee joint, through the fibula component, and through the ground rocker arm to the ground surface.