Patent US4121821A successfully refreshed from Google Patents.
US4121821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skateboard rink and method
Assignee: Individual
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Filing: 1977-03-25
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Granted: 1978-10-24
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Expires: 1997-03-25
Abstract
Abstract An amusement rink for skateboarders is formed by providing spaced mounds of earth on a substantially square, flat lot. A continuous riding track is provided which extends about the lot in a generally serpentine manner and passes over the mounds that it encounters as it progresses along its course, thereby providing a circuitous and undulating ride for the skateboarder.
Inventors
- 👤 Alton J. Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:43
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/003; A; A63; A63C; A63C19/00; A63C19/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
A skateboard rink comprising: a substantially planar lot defining a ground level; a plurality of spaced mounds in the form of substantially rounded cones having a generally randomly spaced relationship on said lot, at least one of said mounds being higher than the others and corresponding to a starting mound; and a continuous track for a skateboarder extending over said lot, said track being an elongated artificial surfacing which the skateboarder must follow, said track including a relatively straight section extending from the top of said starting mound down to ground level and curved sections passing from ground level over said other mounds at different height portions thereof and back down to ground level as the track continues along its course.
Claim 2
Dependent Claim
121 words
A skateboard rink comprising: a substantially planar lot defining a ground level; a plurality of spaced mounds in the form of substantially rounded cones having a generally randomly spaced relationship on said lot, at least one of said mounds being higher than the others and corresponding to a starting mound; and a continuous track for a skateboarder extending over said lot, said track being an elongated artificial surfacing which the skateboarder must follow, said track including a relatively straight section extending from the top of said starting mound down to ground level and curved sections passing from ground level over said other mounds at different height portions thereof and back down to ground level as the track continues along its course.
Claim 3
Dependent Claim
35 words
A skateboard rink as defined in claim 1 wherein said track further includes a section passing over a height portion of a mound and another section passing over another height portion of the same mound.
Claim 4
Dependent Claim
34 words
A skateboard rink as defined in claim 1 including a flat circular competition ring located on the ground level of said lot, said track including a section which substantially circles about said competition ring.
Claim 5
Dependent Claim
15 words
A skateboard rink as defined in claim 1 wherein said mounds are formed of earth.
Claim 6
Dependent Claim
19 words
A skateboard rink as defined in claim 1 wherein said artificial surfacing of the track is formed of concrete.
Claim 7
Dependent Claim
36 words
A skateboard rink as defined in claim 1 including an entrance ramp leading up to the top of the starting mound and an exit ramp leading away from the last mound passed over by said track.
Claim 8
Dependent Claim
29 words
A skateboard rink as defined in claim 6 including a track section branching from the exit ramp and leading back to the track at a point near its beginning.
Claim 9
Independent Claim
74 words
A method of forming a skateboard rink comprising: providing a substantially planar lot; providing a plurality of mounds in the form of substantially rounded cones having a generally randomly spaced relationship on said lot; and forming a continuous substantially narrow riding track about said lot, said track being formed with an artificial surfacing which the user must follow, said track horizontally undulating between mounds and vertically undulating over differing height portions of the mounds.
Claim 10
Independent Claim
74 words
A method of forming a skateboard rink comprising: providing a substantially planar lot; providing a plurality of mounds in the form of substantially rounded cones having a generally randomly spaced relationship on said lot; and forming a continuous substantially narrow riding track about said lot, said track being formed with an artificial surfacing which the user must follow, said track horizontally undulating between mounds and vertically undulating over differing height portions of the mounds.
Claim 11
Dependent Claim
37 words
A method of forming a skateboard rink in accordance with claim 8 including the step of forming a starting mound which is higher than the other mounds, the track starting at the top of said starting mound.
Claim 12
Dependent Claim
37 words
A method of forming a skateboard rink in accordance with claim 8 including the step of forming a gradually inclined entrance ramp extending from the level of the planar lot to the top of said starting mound.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |