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US 5,505,492 AGranted
Composite pole and manufacturing process for composite poles of varying non-circular cross-sections and curved center lines
AssigneeRadius Engineering, Inc.
InventorsRonald H. Nelson, Dimitrije Milovich
Life of this patent
Estimating the term…
Abstract
A composite ski pole is formed of fiber reinforced plastic laminates laid up around an inflatable bladder, and placed in a female mold. The bladder inflates to compact the laminates to substantially eliminate voids and form a smooth, hollow ski pole with a structurally strong and stiff skin. The molds may use compound shapes such as differing cross sections or longitudinal bends.
Claims15
An all composite ski pole comprising:
- a fiber reinforced plastic skin formed and arranged to define a hollow pole having a first end and a second end and having a variable cross-sectional shape between the first end and the second end;
- said skin having a unidirectional fiber reinforced portion completely contained within said skin having a bidirectional fiber reinforced portion completely contained within a matrix of said plastic and being adjacent to the a surface of said hollow pole;
- said skin being formed so as to encompass a compound three dimensional contour to provide transition between different cross-sections of the pole.
A composite ski pole comprising;
- a middle, a first end and a second end,
- each of said ends having a shape different from said middle,
- said pole being formed of a hardenable material reinforced by directional fibers, said material being hardened for use as a pole;
- said pole being hollow along its longitudinal axis.
1 more element
An all composite ski pole comprising:
- a fiber reinforced plastic skin formed and arranged to define a hollow pole having a first end and a second end and a middle portion between the first and second ends,
- said pole having a variable elongated cross-sectional shape;
- said skin having a unidirectional fiber reinforced portion completely contained within said skin having a bidirectional fiber reinforced portion completely contained within a matrix of said plastic and being adjacent to the a surface of said hollow pole;
- said skin being formed so as to encompass a compound three dimensional contour to provide transition between different cross-sections of the pole;
- said first end having a first axis thereto and said middle portion having a second axis intersecting said first axis at an obtuse angle wherein the angle is in a common plane with a long axis of the elongated cross-sectional shape.
2 more elements
Dependencies are inferred from the claim text.