Plastic article or earthenware shaping or treating: apparatus – Preform assembly means and means for bonding of plural... – Opposed coacting press members
Reexamination Certificate
2003-12-17
2008-12-02
Gupta, Yogendra (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Preform assembly means and means for bonding of plural...
Opposed coacting press members
C425S369000, C425S396000, C425S403000, C072S385000, C493S463000
Reexamination Certificate
active
07458802
ABSTRACT:
The invention can be defined in its most general form as a device for sheet material corrugation by means of bending and can be applied in the devices for production of single curvature folded core used in production of aircraft and craft curvilinear panels. The invention has for its object to broaden the technological capabilities. For that the mandrel is made in the form of a set of alternating rows of plane elements (4, 6, 7) made in the form of trapeziums (4) and isosceles triangles (6, 7) fixed on the flexible material of the base (5) forming thus the gap-pivots between the elements. At the same time the bases of the triangular elements (6, 7) face each other in pairs along the bending lines while said bending lines correspond to the protrusions lines of the core folded structure. The base of the triangular elements (6, 7) is the function of the folded core block curvature radius and the geometrical parameters of the zigzag crimp structure. The width of the gap-pivots is taken so that to provide the folding of the mandrel together with the blank forming thus the single curvature zigzag corrugated structure with the lateral direction of crimps.
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Akishev Niaz Irekovich
Nikitin Alexandr Vladimirovich
Zakirov Ildus Muhametgaleevich
Airbus
Gupta Yogendra
Nguyen Thu Khanh T
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Otkrytoe Aktsionernoe Obschestvo “Kazansky Nauchno-Isledo
LandOfFree
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