US4618158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller skates for figure skating
Assignee: Individual
•
Filing: 1983-09-06
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Granted: 1986-10-21
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Expires: 2003-09-06
Abstract
Abstract Single-row roller skates with widened parameters of movement for figure skating on dry surfaces as on ice, said skate comprising a rigid foot plate mounted on spatial cylindrical body of circular cross section, said body has supports for rotating bearings in horizontal axis of motion and has bung (stop) housings extended on both ends for mounted bearing elements and on them supports for twin-carrier yokes having near the supports of said bearing elements spring elements of regulated brakes remaining in elastic contact with rotating brake surfaces of bungs also having on their opposite ends on shoulders formed spatial yokes, said yokes in horizontal static position form supports for vertical auxiliary eliptical surface rollers, said bi-plane yokes interconnected for mounting front and rear main bearings of skate rollers, said rollers have generating surfaces of coaxial microgrooves, said grooves parallel to plane of roller rotation in direction of travel; said skate has distinctive length between axes of front and rear rollers, said length depends on length of skater's foot and is adjustable by mechanism for change of skate length and blocking by frictional resistance.
Inventors
- 👤 Janusz Liberkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/14; A63C17/1409; A63C17/04; A63C17/06; A63C17/061; A63C17/064; A63C17/22; A63C17/223; A63C17/24; A63C2203/00; A63C2203/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
290 words
An improved roller skate comprising: rigid foot plate means, said foot plate means being elongated and defining an axis; housing means affixed to a first side of said foot plate means; first and second carrier yoke means, said carrier yoke means each having two pair of outwardly extending generally parallel arms; means supporting said carrier yoke from opposite ends of said housing means, said supporting means positioning said carrier yoke means so that the arms thereof extend in opposite directions and generally parallel to said foot plate means axis; two pairs of first rollers, said rollers each having an axis of rotation and an outer surface which is convex with respect the axis of rotation; first bearing means for rotatably supporting respective of said first rollers between the spaced arms of said pairs of arms of said carrier yoke means whereby a pair of said first rollers are supported with their axes of rotation substantially parallel from each of said carrier yoke means a pair of second rollers, said second rollers each having an axis and an outer surface which is convex with respect to the axis of rotation thereof; and second bearing means on each of said carrier yokes for rotatably supporting a respective one of said second rollers thereon, with the axes of rotation thereof lying substantially in respective of a pair of substantially parallel planes defined by the axes of rotation of said first rollers of each pair, said planes being substantially transverse to the axis of said foot plate means, the convex surfaces of said first rollers of each pair cooperating with the convex surface of one of said second rollers to define a skate wheel having a generally circular configuration when viewed in said planes.
Claim 2
Dependent Claim
290 words
An improved roller skate comprising: rigid foot plate means, said foot plate means being elongated and defining an axis; housing means affixed to a first side of said foot plate means; first and second carrier yoke means, said carrier yoke means each having two pair of outwardly extending generally parallel arms; means supporting said carrier yoke from opposite ends of said housing means, said supporting means positioning said carrier yoke means so that the arms thereof extend in opposite directions and generally parallel to said foot plate means axis; two pairs of first rollers, said rollers each having an axis of rotation and an outer surface which is convex with respect the axis of rotation; first bearing means for rotatably supporting respective of said first rollers between the spaced arms of said pairs of arms of said carrier yoke means whereby a pair of said first rollers are supported with their axes of rotation substantially parallel from each of said carrier yoke means a pair of second rollers, said second rollers each having an axis and an outer surface which is convex with respect to the axis of rotation thereof; and second bearing means on each of said carrier yokes for rotatably supporting a respective one of said second rollers thereon, with the axes of rotation thereof lying substantially in respective of a pair of substantially parallel planes defined by the axes of rotation of said first rollers of each pair, said planes being substantially transverse to the axis of said foot plate means, the convex surfaces of said first rollers of each pair cooperating with the convex surface of one of said second rollers to define a skate wheel having a generally circular configuration when viewed in said planes.
Claim 3
Dependent Claim
12 words
The skate of claim 1 wherein said foot plate means is telescopic.
Claim 4
Dependent Claim
15 words
The skate of claim 2 wherein the outer surface of said second rollers are grooved.
Claim 5
Dependent Claim
12 words
The skate of 3 wherein said housing means has a circular cross-section.
Claim 6
Dependent Claim
12 words
The skate of 3 wherein said housing means has a circular cross-section.
Claim 7
Dependent Claim
12 words
The skate of claim 4 wherein said skate wheels are generally ball-shaped.
Claim 8
Dependent Claim
12 words
The skate of 1 wherein said housing means has a circular cross-section.
Claim 9
Dependent Claim
12 words
The skate of 1 wherein said housing means has a circular cross-section.
Claim 10
Dependent Claim
12 words
The skate of claim 6 wherein said foot plate means is telescopic.
Claim 11
Dependent Claim
12 words
The skate of claim 1 wherein said skate wheels are generally ball-shaped.
Claim 12
Dependent Claim
35 words
The apparatus of claim 1 wherein the axes of rotation of said first rollers of each of said pairs of first rollers is transverse to the axis of rotation of one of said second rollers.
Claim 13
Dependent Claim
16 words
The apparatus of claim 1 wherein the convex outer surfaces of said second rollers are grooved.
Claim 14
Dependent Claim
29 words
The apparatus of claim 1 further comprising: brake means, said brake means being positioned within said housing means and coupling said carrier yoke means to said foot plate means.
Claim 15
Dependent Claim
36 words
The apparatus of claim 1 wherein said first rollers are each generally barrel-shaped and the convex surface thereof has a radius which is substantially equal to the radius of the convex surfaces of said second rollers.
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) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |