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US 11,141,293 B2Granted
Carbon fiber prosthetic foot
OwnerRonald Harry Nelsoninventor
Life of this patent
Estimating the term…
Abstract
A hollow tubulous composite structure and method for prosthetic limbs is described.
Claims13
A prosthetic foot comprising:
- a heel spring portion,
- a forward spring portion,
- with the portions constructed together as a single unitary continuous hollow member of a composite comprising fibers arranged along a path of the member to provide bending strength and stiffness and bias oriented fibers extending around an entire circumference of the composite member to provide torsional strength to store, release and carry torsional and transverse shear loads,
- a mounting element for securing the prosthetic foot to a lower limb prosthetic structure,
- the heel spring portion configured as a tubulous hollow molded carbon fiber coil, the path including a helical path portion around a heel spring axis with at least one complete 360 degree coil,
- the heel spring portion attached to the mounting element with the heel spring portion extending downward from the mounting element,
- the forward spring portion configured as a tubulous hollow molded carbon fiber coil, the path extending forward from the mounting element and including a helical path portion with at least one complete 360 degree coil.
4 more elements
A prosthetic foot comprising:
- a heel spring portion,
- a forward spring portion,
- with the portions constructed together as a single unitary continuous hollow member of a composite comprising fibers arranged along a path of the member to provide bending strength and stiffness and bias oriented fibers extending around an entire circumference of the composite member to provide torsional strength to store, release and carry torsional and transverse shear loads,
- a mounting element for securing the prosthetic foot to a lower limb prosthetic structure,
- the heel spring portion configured as a tubulous hollow molded carbon fiber coil, the path including a helical path portion around a heel spring axis with at least one complete 360 degree coil,
- the heel spring portion attached to the mounting element with the heel spring portion extending downward from the mounting element,
- the forward spring portion configured as a tubulous hollow molded carbon fiber, the path extending forward from the mounting element and including a helical path portion with at least one complete 360 degree coil.
4 more elements
Dependencies are inferred from the claim text.