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US 7,582,345 B2Granted
Hinge apparatus
AssigneeSgl Carbon SE
InventorsWalter Priegelmeir, Gerhard Heilmeier
Life of this patent
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Abstract
A hinge apparatus is capable of reliably withstanding a great number of stressor cycles. A layer of an inflectable fiber-reinforced composite material is embedded between two layers of a fiber reinforced composite material of high stiffness. The latter are formed with a separating joint along the line of inflection.
Claims12
A hinge apparatus, comprising:
- first and second outer layers of a fiber-reinforced composite material of high strength and stiffness;
- each of said first and second outer layers having a separating joint formed therein along a buckling line;
- an interlayer of a fiber-reinforced composite material of high strength and stiffness disposed between said first and second outer layers;
- and
- a strip of material integrated in and interrupting said interlayer in a region of said buckling line, said strip of material being formed of inflectable fiber-reinforced plastic having a resin matrix throughout an entirety of said strip, and having a width of approximately 15 to 20 mm to either side of said buckling line, said strip of material forming a hinge configured to inflect along said separating joints when the hinge apparatus is actuated;
- said first and second outer layers, said interlayer, and said strip of material being transparent to x-rays.
3 more elements
A hinge apparatus, comprising:
- a first layer of fiber-reinforced material having a high degree of stiffness;
- a second layer of fiber-reinforced material having a high degree of stiffness;
- said first and second layers being mutually parallel layers;
- an intermediate layer sandwiched between said mutually parallel layers;
- each of said mutually parallel layers having a separating joint formed therein opposite one another defining a line of inflection substantially exposing said intermediate layer and defining an articulation hinge of the hinge apparatus;
- said intermediate layer being formed of flexible fiber-reinforced composite material having reinforcing fibers with a high flexural strength in a resin matrix extending across said line of inflection;
- said first and second layers and said intermediate layer being transparent to x-rays.
4 more elements
Dependencies are inferred from the claim text.