US5505492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite pole and manufacturing process for composite poles of varying non-circular cross-sections and curved center lines
Assignee: Radius Engineering Inc
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Filing: 1994-12-20
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Granted: 1996-04-09
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Expires: 2014-12-20
Abstract
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.
Inventors
- 👤 Ronald H. Nelson
- 👤 Dimitrije Milovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:54
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/06; A63B60/34; A63B53/00; A63B53/12; A63B60/10; A63C; A63C11/00; A63C11/22; B; B29; B29C; B29C33/00; B29C33/44; B29C33/48; B29C33/50; B29C33/505; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/446; A63B2208/00; A63B2208/12; A63B2209/00; A63B2209/02; A63B2209/023; A63B2225/00; A63B2225/01; A63B49/00; A63B49/02; A63B49/10; A63B49/11; A63B53/10; A63B60/0081; A63B60/08; A63B60/12; A63B60/14; B29C53/00; B29C53/56; B63; B63B; B63B15/00; B63B15/0083; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
101 words
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.
Claim 2
Dependent Claim
101 words
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.
Claim 3
Dependent Claim
37 words
The pole of claim 1 wherein said compound contour is a transition between a substantially circular cross-sectional shade at the first end of the pole, and an elongated cross-sectional shave at a middle portion of said pole.
Claim 4
Dependent Claim
60 words
The pole of claim 1 wherein said compound contour is a transition between an elongated cross-sectional shape at the first end of the pole, and an elongated cross-sectional shape at a middle portion of said 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.
Claim 5
Dependent Claim
37 words
The pole of claim 2 wherein said second end is of a substantially circular cross-sectional shape; said pole having a second compound contour being a transition between said elongated cross sectional middle portion and said second end.
Claim 6
Dependent Claim
57 words
The pole of claim 3 wherein said second end has a third axis and an elongated cross-sectional shape; said compound contour being a first compound contour; a second compound contour being transition between said middle portion and said second end; said third axis begin substantially parallel said first and intersecting said second axis at an obtuse angle.
Claim 7
Dependent Claim
54 words
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.
Claim 8
Dependent Claim
54 words
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.
Claim 9
Dependent Claim
21 words
The pole of claim 6 further comprising: said pole being a double tapered pole formed with a substantially smooth exterior surface.
Claim 10
Dependent Claim
30 words
The pole of claim 6 further comprising: said pole being formed of curable fiber reinforced plastic laminations of directional fiber sheet and having a fiber volume of greater than 62%.
Claim 11
Dependent Claim
30 words
The pole of claim 6 further comprising: said pole being formed of curable fiber reinforced plastic laminations having a high fiber volume and a low void presence between said laminations.
Claim 12
Dependent Claim
61 words
The pole of claim 6 further comprising: said pole being formed of curable fiber reinforced plastic laminations; one of said laminations being of unidirectional fiber sheet; said laminations being outwardly compressed so that said plastic forms a substantially homogenous matrix surrounding said laminations; said pole having a substantially smooth, and substantially flashless outer surface requiring substantially no shaping prior to finishing.
Claim 13
Dependent Claim
50 words
The pole of claim 6 further comprising: a plurality of laminations laid up from prepreg sheets; said laminations being composed of directionally oriented fibers, oriented in the direction of strength of the finished pole; laminations being substantially free of voids and formed as a substantially homogenous matrix surrounding said fibers.
Claim 14
Dependent Claim
18 words
The pole of claim 1 having a variable cross-sectional circumference between the first end and the second end.
Claim 15
Dependent Claim
29 words
The pole of claim 12 wherein the cross-sectional circumference at a middle portion between the first and second end is larger than the cross-sectional circumference at the first end.
Claim 16
Dependent Claim
23 words
The pole of claim 13 wherein the cross-sectional circumference at the middle portion is larger than the cross-section circumference at the second end.
Claim 17
Dependent Claim
146 words
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.
Claim 18
Dependent Claim
146 words
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.
References Cited (Backward Citations)
US4983430A
Cited
US5393581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-09 | 1999-10-09 | 2000-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-09 | 2003-10-09 | 2004-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-09 | 2007-10-09 | 2008-04-09 | $7700.00 | Window Closed / Lapsed |