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Class Information
Number: 244/123.9
Name: Aeronautics > Aircraft structure > Airfoil construction > Main spar > Tubular spar
Description: Subject matter in which the beam (i.e., spar) is hollow.










Patents under this class:

Patent Number Title Of Patent Date Issued
8617687 Multi-functional aircraft structures Dec. 31, 2013
8342457 Shape-changing structure member with embedded spring Jan. 1, 2013
8100361 Hull structure Jan. 24, 2012
8096503 Structuring construction for an aircraft fuselage Jan. 17, 2012
8016249 Shape-changing structure member with embedded spring Sep. 13, 2011
7828246 Wing with sectioned tubular members Nov. 9, 2010
7198691 Fastenerless internal support for hollow structures Apr. 3, 2007
7007889 Flexible airfoils and method Mar. 7, 2006
6655633 Tubular members integrated to form a structure Dec. 2, 2003
6082667 Inflated wing Jul. 4, 2000
5469686 Composite structural truss element Nov. 28, 1995
5356094 Scorpion wing Oct. 18, 1994
5332178 Composite wing and manufacturing process thereof Jul. 26, 1994
4986495 Cooling structure Jan. 22, 1991
4925131 Aircraft with a plurality of propellers, a pipe structure for thereon holdable wings, for vertical take off and landing May. 15, 1990
4895491 Fan blade protection system Jan. 23, 1990
4548371 Ultralight aircraft Oct. 22, 1985
4538780 Ultralight composite wing structure Sep. 3, 1985
4437426 Wing type air foil assembly Mar. 20, 1984
4415131 Arc wing aircraft Nov. 15, 1983
4387866 Fluid motor driven propeller-aircraft for vertical take off and landing with a multipurpose pipe structure Jun. 14, 1983
4079903 Lightweight contoured load carrying structure Mar. 21, 1978
4036455 Air-cargo liner Jul. 19, 1977
3962506 Multi-chambered cellular structure and method for manufacture Jun. 8, 1976











 
 
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