The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Dec. 21, 2007
Applicant:
Karl Schreiber, Am Mellensee, DE;
Inventor:
Karl Schreiber, Am Mellensee, DE;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
F01D 5/28 (2006.01); B21D 53/78 (2006.01); F04D 29/32 (2006.01); B29C 70/34 (2006.01); F04D 29/38 (2006.01); B29D 99/00 (2010.01); B23P 15/04 (2006.01); F02K 3/06 (2006.01); F01D 5/14 (2006.01); B29K 707/04 (2006.01);
U.S. Cl.
CPC ...
F01D 5/147 (2013.01); B21D 53/78 (2013.01); F04D 29/324 (2013.01); B29C 70/345 (2013.01); F04D 29/388 (2013.01); F05D 2300/603 (2013.01); B29D 99/0025 (2013.01); B23P 15/04 (2013.01); F02K 3/06 (2013.01); B29K 2707/04 (2013.01); F05D 2230/23 (2013.01);
Abstract
With a hybrid fan blade, the supporting structure () in fiber-composite material is enclosed by an enveloping structure () only in an area of the airfoil, with a suction-side sheet-metal cover of the enveloping structure being pre-stressed in tension and a pressure-side sheet-metal cover of the enveloping structure being pre-stressed in compression. This reduces the hazard of delamination between the enveloping structure and the supporting structure.