US4679813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski stiff in torsion
Assignee: Individual
•
Filing: 1986-04-10
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Granted: 1987-07-14
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Expires: 2006-04-10
Abstract
Abstract A ski that is stiff in torsion and is flexible in the vertical direction. The ski body that is relatively weak and flexible both in beam and in torsion, having a ski binding area in between its ends for affixation of a user's ski boot, providing forward and rear top surface portions. At least one tubular elastomeric member is rigidly secured atop said ski body, it may be on said forward surface portion, or on said rear surface portion, or on both surface portions, the tubular member being provided with reinforcing comprising helically wound braiding of high-tensile-strength filaments.
Inventors
- 👤 Donald A. Girard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:14
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/06; A63C5/07
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
102 words
A ski that is stiff in torsion and is flexible in the vertical direction, comprising a ski body that is compliant both in beam and in torsion, having a bottom surface and a top surface, a curved-up front end, a rear end, and a ski binding area in between its ends for affixation of a user's ski boot, providing a forward top surface portion and a rear top surface portion, at least one hollow elastomeric tubular hose supporting and reinforced by tightly helically wound braiding of high-tensile-strength filaments, rigidly secured to an upper surface portion said ski body, said hose extending lengthwise.
Claim 2
Dependent Claim
102 words
A ski that is stiff in torsion and is flexible in the vertical direction, comprising a ski body that is compliant both in beam and in torsion, having a bottom surface and a top surface, a curved-up front end, a rear end, and a ski binding area in between its ends for affixation of a user's ski boot, providing a forward top surface portion and a rear top surface portion, at least one hollow elastomeric tubular hose supporting and reinforced by tightly helically wound braiding of high-tensile-strength filaments, rigidly secured to an upper surface portion said ski body, said hose extending lengthwise.
Claim 3
Dependent Claim
24 words
The ski of claim 1 wherein said hose is circular in cross-section and is secured firmly to the ski body along a bottom portion.
Claim 4
Dependent Claim
26 words
The ski of claim 1 wherein said hose is semicircular in transverse cross-section and has a base strip which is rigidly secured to the ski body.
Claim 5
Dependent Claim
12 words
The ski of claim 1 wherein said braiding is of steel filaments.
Claim 6
Dependent Claim
11 words
The ski of claim 1, wherein said braiding is of fiberglass.
Claim 7
Dependent Claim
12 words
The ski of claim 1 wherein said braiding is of carbon fiber.
Claim 8
Dependent Claim
26 words
The ski of claim 1 wherein there are two said hoses, one secured to said forward top surface and one secured to said rear top surface.
Claim 9
Dependent Claim
123 words
A ski that is stiff in torsion when submitted to a torque and is flexible in the vertical direction, comprising a ski body that is compliant both in beam and in torsion, having a bottom surface and a top surface, a curved-up front end, a rear end, and a ski binding area in between its ends for affixation of a user's ski boot, providing a forward top surface portion and a rear top surface portion, a pair of longitudinally extending hollow tubular elastomeric members rigidly attached atop said ski body, each said member extending longitudinally of said ski, one on said forward surface portion, one on said rear surface portion, each said member having a reinforcing helically wound external braiding of high-tensile-strength filaments.
Claim 10
Dependent Claim
123 words
A ski that is stiff in torsion when submitted to a torque and is flexible in the vertical direction, comprising a ski body that is compliant both in beam and in torsion, having a bottom surface and a top surface, a curved-up front end, a rear end, and a ski binding area in between its ends for affixation of a user's ski boot, providing a forward top surface portion and a rear top surface portion, a pair of longitudinally extending hollow tubular elastomeric members rigidly attached atop said ski body, each said member extending longitudinally of said ski, one on said forward surface portion, one on said rear surface portion, each said member having a reinforcing helically wound external braiding of high-tensile-strength filaments.
Claim 11
Dependent Claim
14 words
The ski of claim 8 wherein each said member is semicircular in transverse cross-section.
Claim 12
Dependent Claim
23 words
The ski of claim 9 wherein said semicircular member has a base and has means for adhesively securing it to the ski body.
Claim 13
Dependent Claim
14 words
The ski of claim 8 wherein each said member is circular in transverse cross-section.
References Cited (Backward Citations)
US2377504A
Cited
US4035000A
Cited
US4221400A
Cited
US4409287A
Cited
FR2527460A1
Cited
DE3236016A1
Cited
US4592567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |