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(11)

EP 2 926 164 A1

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(43) Date of publication: 07.10.2015 Bulletin 2015/41 (21) Application number: 13858158.2 (22) Date of filing: 11.10.2013

(51) International Patent Classification (IPC):  G01S 17/95(2006.01) G01S 17/88(2006.01) (86) International application number: PCT/US2013/064693 (87) International publication number: WO 2014/084973 (05.06.2014 Gazette 2014/23)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 30.11.2012 US 201261732210 P (60) Divisional application: 15168724.1 (71) Applicants: Tchoryk, Peter Ann Arbor, MI 48108-2285 (US) Hayes, Paul, Byron Ann Arbor, MI 48108-2285 (US)	(72) Inventors: RICHEY, Charles, J. Ann Arbor, MI 48108-2285 (US) JOHNSON, David, Keith Ann Arbor, MI 48108-2285 (US) ZUK, David, Michael Ann Arbor, MI 48108-2285 (US) (74) Representative: Puschmann Borchert Bardehle Patentanwälte Partnerschaft mbB  Bajuwarenring 21 82041 Oberhaching 82041 Oberhaching (DE)