New Boeing patent: Convertible compounded rotorcraft

http://pdfaiw.uspto.gov/.aiw?Docid=20150115096&homeurl=http://appft.uspto.gov/netacgi/nph-Parser%3FSect1%3DPTO1%2526Sect2%3DHITOFF%2526d%3DPG01%2526p%3D1%2526u%3D/netahtml/PTO/srchnum.html%2526r%3D1%2526f%3DG%2526l%3D50%2526s1%3D20150115096.PGNR.%2526OS%3D%2526RS%3D&PageNum=&Rtype=&SectionNum=&idkey=134727DCAD0C