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US 9,869,325 B2Granted
Fan blade
AssigneeW & S Management GmbH & Co. KG
InventorHenrik Witt
Life of this patent
Estimating the term…
Abstract
To improve upon a fan blade (6) with regard to the use of materials and the weight, in particular a fan blade for smoke venting fans, having fastening means (5) for fastening the fan blade (6) onto a fan hub as well as having a blade section (7), it is proposed that the blade section (7) shall have an outer jacket (8) enclosing a cavity.
Claims13
A smoke venting fan blade comprising:
- a base plate having first and second flat surfaces;
- a fastener extending through the first and second flat surfaces and being configured to fasten the smoke venting fan blade directly to a fan hub;
- and
- a blade section comprising an outer jacket enclosing a cavity, the cavity comprising a supporting structure that is configured to absorb tensile forces acting on the smoke venting fan blade and to withstand temperatures of at least 300° C.,
- wherein the supporting structure comprises one or more profile chords that are adapted to the shape of the outer jacket, the supporting structure being manufactured from at least one of a steel alloy and a titanium alloy, and wherein portions of the supporting structure are affixed to each other in a modular design.
2 more elements
Dependencies are inferred from the claim text.