US4262863A - Powered hang glider with reduction drive - Google Patents

http://www.google.de/patents?hl=de&lr=&vid=USPAT4262863&id=_JE8AAAAEBAJ&oi=fnd&dq=hang+gliding+harness&printsec=abstract

A foot-launched and foot-landed hang glider is powered by an internal combustion two-cycle engine drivingly connected through a reduction-drive unit to a large relatively slow-moving propeller. A reduction mount, so referred to because it couples the…