US4179539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski slope
Assignee: Individual
•
Filing: 1978-08-16
•
Granted: 1979-12-18
•
Expires: 1998-08-16
Abstract
Abstract An artificial skiing surface comprising a plurality of single elements formed from plastic adapted to be detachably joined together in side-by-side relationship including a base layer provided with a plurality of flexible upwardly extending plastic fingers and a plurality of sockets in each of which rotatable balls are disposed formed from plastic having a hardness greater than that of the fingers and having the same height as that of the fingers together with a guidance comb inserted in a groove in the base layer and having flexible teeth with globular tips which extend upwardly preferably to a height above that of the fingers to provide control of a ski sliding thereon.
Inventors
- 👤 Herbert Schweizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:39
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/10; E01C13/12; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/19; Y10T428/192; Y10T428/23907; Y10T428/23957
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
A skiing surface comprising a plurality of single elements formed of plastic and adapted to be joined together in a side-by-side relationship, each single element including a base layer, a plurality of glide fingers on the upper surface of said base layer extending perpendicular to said base layer surface, a plurality of sockets in the upper surface of said base layer, a glide ball which extends upwardly from each socket to a height at which the top of the ball is coincident with the height of the glide fingers and is rotatably disposed in each of said sockets, at least one elongated groove in the upper surface of said base layer and a guidance comb which includes a plurality of easily flexible teeth, said teeth extending upwardly from the surface of said base layer to a height greater than the height of the glide fingers, each of the teeth being provided with a spherical thickening on its upper end, said guidance comb mounted in said groove.
Claim 2
Dependent Claim
166 words
A skiing surface comprising a plurality of single elements formed of plastic and adapted to be joined together in a side-by-side relationship, each single element including a base layer, a plurality of glide fingers on the upper surface of said base layer extending perpendicular to said base layer surface, a plurality of sockets in the upper surface of said base layer, a glide ball which extends upwardly from each socket to a height at which the top of the ball is coincident with the height of the glide fingers and is rotatably disposed in each of said sockets, at least one elongated groove in the upper surface of said base layer and a guidance comb which includes a plurality of easily flexible teeth, said teeth extending upwardly from the surface of said base layer to a height greater than the height of the glide fingers, each of the teeth being provided with a spherical thickening on its upper end, said guidance comb mounted in said groove.
Claim 3
Dependent Claim
81 words
A skiing surface according to claim 1, characterized in that said glide fingers and said glide balls are formed from plastic, the plastic of said glide balls having a hardness greater than the plastic of said glide fingers and wherein said glide balls are distrubuted in a selected pattern throughout the upper surface of said base layer to provide a reduction in the friction between the ski and said glide fingers during sliding movement of a ski on said glide fingers.
Claim 4
Dependent Claim
16 words
A skiing surface according to claim 2, characterized in that said teeth are of varying heights.
Claim 5
Dependent Claim
66 words
A skiing surface according to claim 3, characterized in that at least one connector eye is provided on each of a pair of adjacent edges on said base layer of each single element, and at least one connector stub on each of the other pair adjacent side edges of each single element, said eyes and stubs being correspondingly located for interengagement for interconnecting adjacent single elements.
Claim 6
Dependent Claim
45 words
A skiing surface according to claim 4, characterized in that each single element is provided with a bore extending vertically therethrough and a helically threaded screw arranged to be inserted through said bore for securing the single element to the surface of a ski slope.
Claim 7
Dependent Claim
24 words
A skiing surface according to claim 5, characterized in that each said single element, said glide balls and said guidance combs are easily interchangeable.
References Cited (Backward Citations)
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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) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |