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  PIAGGIO P.50

  https://web.archive.org/web/20110816043041/http://italianaircraftofwwii.devhub.com/blog/628490-piaggio-p50/

  Appearing in 1937, the P.50-I four-engined heavy bomber employed a number of features tried on earlier Piaggio and Reggiane experimental models, among them the tandem engine layout of the P.23M ...

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  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…

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