Patent US4568100A successfully refreshed from Google Patents.
US4568100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable span device for skis
Assignee: Individual
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Filing: 1984-04-30
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Granted: 1986-02-04
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Expires: 2004-04-30
Abstract
Abstract The span of the ski is provided with a horizontal slit passing through the span and dividing it into an upper part and a lower part, the lower part being more easily bendable in vertical direction than the upper part. For influence of the front sole part of the ski boot is arranged a pressure member, movable in vertical direction, which member passes through upper part and is fastened to or in any other way arranged to engage with the lower part of the span.
Inventors
- 👤 Karl G. V. Eriksson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:39
CPC Classifications
A; A63; A63C; A63C7/00; A63C7/005; A63C5/00; A63C5/06; A63C5/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
A device comprising a ski having a horizontal slit transversely formed across the entire width and along a length of the span of the ski for dividing it into upper and lower parts, each of said parts having a vertical flexibility characteristic wherein the lower part is more flexible than the upper part, binding means for attachment to the toe of a ski boot so that the heel of the boot may raise as the skier walks or runs while wearing the ski, and means for securing said binding means along a length of the upper part and to said lower part which causes a flexing of said ski in response to the movements of a walking or running foot, whereby movement of said ski boot separately flexes said upper and lower parts of said ski, thus causing said slit to open and close.
Claim 2
Independent Claim
144 words
A device comprising a ski having a horizontal slit transversely formed across the entire width and along a length of the span of the ski for dividing it into upper and lower parts, each of said parts having a vertical flexibility characteristic wherein the lower part is more flexible than the upper part, binding means for attachment to the toe of a ski boot so that the heel of the boot may raise as the skier walks or runs while wearing the ski, and means for securing said binding means along a length of the upper part and to said lower part which causes a flexing of said ski in response to the movements of a walking or running foot, whereby movement of said ski boot separately flexes said upper and lower parts of said ski, thus causing said slit to open and close.
Claim 3
Dependent Claim
41 words
The device of claim 1 wherein said binding means comprises a foot plate attached at said upper part of the ski and a toe receiving means on said plate for applying a fastening pressure to the toe of the ski boot.
Claim 4
Dependent Claim
32 words
The device of claim 1 and a coating on the bottom of the ski which extends upwardly along two vertical sides of said ski to cover the sides of the horizontal slit.
Claim 5
Dependent Claim
30 words
The device of claim 3 and means at the upper edges of said coating for sealing the coating against the ski to prevent the entrance of snow into said slit.
Claim 6
Dependent Claim
32 words
The device of claim 1 and means for covering the slit on opposite sides of said ski for preventing entry of snow into said slit during the vertical opening of said slit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |