(12) United States Patent (10) Patent No.: US 9,475,591 B2 Dula (45) Date of Patent: Oct
US009475591 B2 (12) United States Patent (10) Patent No.: US 9,475,591 B2 Dula (45) Date of Patent: Oct. 25, 2016 (54) SPACE LAUNCH APPARATUS 3,825,211 A * 7/1974 Minovitch ............. B64G 1,409 244/171.1 (71) Applicant: Arthur McKee Dula, Houston, TX 4,451,017 A * 5/1984 Marshall ................ By 1992 (US) 4,699,339 A * 10/1987 Rosen ...................... B64G 1/14 244f1722 (72) Inventor: Arthur McKee Dula, Houston, TX 4,817,890 A * 4/1989 Coffinberry ............. FO2K9/605 (US) 244f135 R 4,943,014 A * 7/1990 Harwood ............... B64G 1,007 (*) Notice: Subject to any disclaimer, the term of this 5,667,167 A * 9, 1997 Kistler B.E. patent is extended or adjusted under 35 ww J. W. x -1 K-1 - kx. Vukwu. 244/110 E U.S.C. 154(b) by 89 days. 6,491.258 B1* 12/2002 Boyd ..................... B64G 1,007 244,158.1 (21) Appl. No.: 14/547,543 6,536,712 B1* 3/2003 Barenett .................. Bigg (22) Filed:1-1. Nov. 19, 2014 6,685,141 B2 * 2/2004 Penn ...................... B64G244/171.1 1002 O O 6,793,183 B1* 9/2004 Hand ..................... B64G 1,641 (65) Prior Publication Data 244,158.1 US 2015/0375875 A1 Dec. 31, 2015 7,559,508 B1* 7/2009 Taylor .................... B64G244, 1,0021594 Related U.S. Application Data 7,686,255 B2 * 3/2010 Harris .................... B64G 1.222 AV 244, 1594 (60) Provisional application No. 61/906,086, filed on Nov. 2011/0297795 A1* 12/2011 Jaeger ...................... B64G 1/10 19, 2013, provisional application No.
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