Lightweight prosthetic foot
OwnerHaripriya Sumana Gosakaninventor
Life of this patent
Estimating the term…
Abstract
A prosthetic foot (200) that does not require metallic connectors to attach carbon fiber leaf springs (201) and (202) is provided. The carbon fiber leaf springs (201) and (202) are attached together by three-dimensionally stitching prepreg preforms of the carbon fiber leaf springs (201) and (202) at the junction (203) of the carbon fiber leaf springs (201) and (202), and then further curing the stitch attached prepreg preforms. In another embodiment, a woven interlayer attached the two carbon fiber leaf springs (201) and (202).
Claims8
A prosthetic foot comprising:
- a first composite leafspring;
- a second composite leafspring;
- and
- a three dimensional composite fiber stitch between said first leafspring and second leafspring.
A prosthetic foot comprising:
- a first composite leafspring;
- a second composite leafspring;
- and
- an woven interlayer between said first composite leafspring and second composite leafspring, wherein a portion of the fibers from the woven layer in the direction along the length of the foot is inserted into the first composite leafspring, and the rest of the fibers in the direction along the length of the foot is inserted into the second leafspring.
A method of manufacturing a prosthetic foot comprising:
- stitching a first and a second prepeg layer using a composite fiber;
- laying the first prepeg layer along a first part of a mold;
- laying the second prepeg surface on a second part of the mold;
- wherein the junction between said first prepeg layer and second prepeg layer is stitch attached;
- and
- pressurizing and curing said first prepeg layer and second prepeg layers.
(canceled)
Dependencies are inferred from the claim text.