US4787652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosscountry ski sticks particularly for the new technique called "Skating"
Assignee: Individual
•
Filing: 1987-03-13
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Granted: 1988-11-29
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Expires: 2007-03-13
Abstract
Abstract The proposed crosscountry ski stick comprises a tube with a handgrip at its top and a snow-wheel at its lower end, fitted with a spike. The areas of contact with the snow are completely asymmetrical, that is without any symmetry axis. The spike lies in a plane which slants outwards with respect to the skier and forms an angle between 15° and 45°. The snow-wheel has a markedly asymmetrical shape i.e. it has no symmetry axis, it has two essentially straight sides which fan out from the tube forming an angle of between 60° and 90°. One of the straight sides is substantially perpendicular to the skier's direction of travel.
Inventors
- 👤 Attilio Pronzati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:54
CPC Classifications
A; A63; A63C; A63C11/00; A63C11/22; A63C11/24; A63C11/222
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
A crosscountry ski stick comprising an elongated staff having at one end a hand grip and at the other end an imperforate snow wheel, said hand grip having a hand strap emerging rearwardly of the ski stick, the snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, said portions having a laterally outwardly projecting straight edge and a reawardly projecting straight edge, said edges comprising the laterally outermost boundary edges of the snow wheel and being disposed at an angle between 60° and 90° to each other.
Claim 2
Dependent Claim
103 words
A crosscountry ski stick comprising an elongated staff having at one end a hand grip and at the other end an imperforate snow wheel, said hand grip having a hand strap emerging rearwardly of the ski stick, the snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, said portions having a laterally outwardly projecting straight edge and a reawardly projecting straight edge, said edges comprising the laterally outermost boundary edges of the snow wheel and being disposed at an angle between 60° and 90° to each other.
Claim 3
Dependent Claim
57 words
A crosscountry ski stick as claimed in claim 1, said sleeve being annular and coaxial with said staff, and a single spike emerging from the lower end of the sleeve and being inclined downwardly in a laterally outward direction and being inclined forwardly downwardly, the upper end of said spike lying on the axis of the sleeve.
Claim 4
Dependent Claim
101 words
A crosscountry ski stick comprising an elongated staff having at one end a hand grip and at the other end a snow wheel, said hand grip having a hand strap emerging rearwardly of the ski stick, the snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, and a single spike emerging from the lower end of the sleeve and being inclined downwardly in a laterally outward direction and being inclined forwardly downwardly, the upper end of said spike lying on the axis of the sleeve.
Claim 5
Dependent Claim
101 words
A crosscountry ski stick comprising an elongated staff having at one end a hand grip and at the other end a snow wheel, said hand grip having a hand strap emerging rearwardly of the ski stick, the snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, and a single spike emerging from the lower end of the sleeve and being inclined downwardly in a laterally outward direction and being inclined forwardly downwardly, the upper end of said spike lying on the axis of the sleeve.
Claim 6
Dependent Claim
134 words
A pair of crosscountry ski sticks each having an elongated staff having at one end a hand grip and at the other end an imperforate snow wheel, each said hand grip having a hand strap emerging rearwardly of the associated ski stick, each snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, said portions of each said stick having a laterally outwardly projecting straight edge and a rearwardly projecting straight edge disposed at an angle between 60° and 90° to each other, said edges comprising the laterally outermost boundary edges of the snow wheel, said ski sticks being asymmetric but being mirror images of each other on opposite sides of a vertical lane that extends forwardly and rearwardly.
Claim 7
Dependent Claim
134 words
A pair of crosscountry ski sticks each having an elongated staff having at one end a hand grip and at the other end an imperforate snow wheel, each said hand grip having a hand strap emerging rearwardly of the associated ski stick, each snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, said portions of each said stick having a laterally outwardly projecting straight edge and a rearwardly projecting straight edge disposed at an angle between 60° and 90° to each other, said edges comprising the laterally outermost boundary edges of the snow wheel, said ski sticks being asymmetric but being mirror images of each other on opposite sides of a vertical lane that extends forwardly and rearwardly.
Claim 8
Dependent Claim
64 words
A pair of crosscountry ski sticks as claimed in claim 4, each said sleeve being annular and coaxial with the associated said staff, and a single spike emerging from the lower end of each sleeve and being inclined downwardly in a laterally outward direction and being inclined forwardly downwardly, the upper end of each said spike lying on the axis of said associated sleeve.
Claim 9
Dependent Claim
33 words
A pair of crosscountry ski sticks as claimed in claim 4, said rearwardly projecting straight edge of one ski stick diverging rearwardly from said rearwardly projecting straight edge of the other ski stick.
Claim 10
Dependent Claim
112 words
A pair of crosscountry ski sticks each having an elongated staff having at one end a hand grip and at the other end a snow wheel, said hand grip having a hand strap emerging rearwardly of the ski stick, the snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, said sleeve being annular and coaxial with said staff, and a single spike emerging from the lower end of the sleeve and being inclined downwardly in a laterally outward direction and being inclined forwardly downwardly, the spikes on the respective sleeves diverging downwardly forwardly from each other.
Claim 11
Dependent Claim
112 words
A pair of crosscountry ski sticks each having an elongated staff having at one end a hand grip and at the other end a snow wheel, said hand grip having a hand strap emerging rearwardly of the ski stick, the snow wheel having a sleeve surrounding and secured to the staff and having downwardly concave portions which project only laterally and rearwardly from said sleeve, said sleeve being annular and coaxial with said staff, and a single spike emerging from the lower end of the sleeve and being inclined downwardly in a laterally outward direction and being inclined forwardly downwardly, the spikes on the respective sleeves diverging downwardly forwardly from each other.
Claim 12
Dependent Claim
27 words
A pair of crosscountry ski sticks as claimed in claim 7, the upper end of each said spike lying on the axis of its associated said sleeve.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |