Patent US927713A successfully refreshed from Google Patents.
Patent US5860707A successfully refreshed from Google Patents.
US5860707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line skate wheel
Assignee: Rollerblade Inc
•
Filing: 1997-03-13
•
Granted: 1999-01-19
•
Expires: 2017-03-13
Abstract
Abstract An in-line skate wheel includes an polyethylene closed cell foam ring surrounding the outer cylindrical surface of a hard plastic hub. Polyurethane is molded onto the outer cylindrical surface of the hub and surrounding the polyethylene ring. The polyethylene ring is provided with a substantially lower density than the density of the polyurethane.
Inventors
- 👤 Lloyd Gerhardt Keleny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:49
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/22; A63C17/223
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
A skate wheel comprising: a generally cylindrical hub having an axially extending axle opening, said hub further having first and second axial ends separated by a cylindrical surface; an outer layer of a first synthetic plastic material having a first density, said first material molded onto said hub and surrounding said cylindrical surface; an inner layer of a second synthetic plastic material having a second density less than said first density, said inner layer being generally centrally positioned surrounding said cylindrical surface and spaced from said axial ends; said first material surrounding said second material on at least radially outer and axially outer surfaces of said second material with an outer surface of said first material having a progressively increasing radial dimension from said axial ends toward a center of said hub; wherein said skate wheel further comprises a layer of entrained air bubbles between said inner and outer layers.
Claim 2
Dependent Claim
150 words
A skate wheel comprising: a generally cylindrical hub having an axially extending axle opening, said hub further having first and second axial ends separated by a cylindrical surface; an outer layer of a first synthetic plastic material having a first density, said first material molded onto said hub and surrounding said cylindrical surface; an inner layer of a second synthetic plastic material having a second density less than said first density, said inner layer being generally centrally positioned surrounding said cylindrical surface and spaced from said axial ends; said first material surrounding said second material on at least radially outer and axially outer surfaces of said second material with an outer surface of said first material having a progressively increasing radial dimension from said axial ends toward a center of said hub; wherein said skate wheel further comprises a layer of entrained air bubbles between said inner and outer layers.
Claim 3
Dependent Claim
58 words
The skate wheel according to claim 1 wherein said outer layer is a molded polyurethane material and said inner layer includes an annular foam ring, said ring generally centrally positioned surrounding said cylindrical surface and spaced from said axial ends; wherein said molded polyurethane material is molded onto said hub and surrounds said cylindrical surface and said ring.
Claim 4
Dependent Claim
15 words
The skate wheel according to claim 2 wherein said foam is a closed cell foam.
Claim 5
Dependent Claim
218 words
A skate wheel comprising: a generally cylindrical hub having an axially extending axle opening, said hub further having first and second axial ends separated by a cylindrical surface; first and second anchors projecting radially outward from said cylindrical surface and extending circumferentially around said cylindrical surface, said first and second anchors defining a material receiving channel therebetween; an outer layer of a first synthetic plastic material having a first density, said first material molded onto said hub and surrounding said cylindrical surface; an inner layer of a second synthetic plastic material having a second density less than said first density, said inner layer being generally centrally positioned surrounding said cylindrical surface and received at least partially within said material receiving channel; said first material surrounding said second material on at least radially outer and axially outer surfaces of said second material with an outer surface of said first material having a progressively increasing radial dimension from said axial ends toward a center of said hub; wherein said outer layer is a molded polyurethane material and said inner layer includes an annular foam ring, said ring sized to be received in said material receiving channel and wherein said molded polyurethane material is molded onto said hub and surrounds said cylindrical surface, said first and second anchors and said ring.
Claim 6
Dependent Claim
218 words
A skate wheel comprising: a generally cylindrical hub having an axially extending axle opening, said hub further having first and second axial ends separated by a cylindrical surface; first and second anchors projecting radially outward from said cylindrical surface and extending circumferentially around said cylindrical surface, said first and second anchors defining a material receiving channel therebetween; an outer layer of a first synthetic plastic material having a first density, said first material molded onto said hub and surrounding said cylindrical surface; an inner layer of a second synthetic plastic material having a second density less than said first density, said inner layer being generally centrally positioned surrounding said cylindrical surface and received at least partially within said material receiving channel; said first material surrounding said second material on at least radially outer and axially outer surfaces of said second material with an outer surface of said first material having a progressively increasing radial dimension from said axial ends toward a center of said hub; wherein said outer layer is a molded polyurethane material and said inner layer includes an annular foam ring, said ring sized to be received in said material receiving channel and wherein said molded polyurethane material is molded onto said hub and surrounds said cylindrical surface, said first and second anchors and said ring.
Claim 7
Dependent Claim
175 words
A skate wheel comprising: a generally cylindrical hub having an axially extending axle opening, said hub further having first and second axial ends separated by a cylindrical surface; an outer layer of a first synthetic plastic material having a first density, said first material molded onto said hub and surrounding said cylindrical surface; an inner layer of a second synthetic plastic material having a second density less than said first density, said inner layer being generally centrally positioned surrounding said cylindrical surface and spaced from said axial ends; a middle layer interposed at least partially between said inner and outer layers and generally surrounding said inner layer, said middle layer having a third density less than said first and second densities; and said first material surrounding said second material on at least radially outer and axially outer surfaces of said second material with said middle layer at least partially interposed therebetween, wherein an outer surface of said first material has a progressively increasing radial dimension from said axial ends toward a center of said hub.
Claim 8
Dependent Claim
175 words
A skate wheel comprising: a generally cylindrical hub having an axially extending axle opening, said hub further having first and second axial ends separated by a cylindrical surface; an outer layer of a first synthetic plastic material having a first density, said first material molded onto said hub and surrounding said cylindrical surface; an inner layer of a second synthetic plastic material having a second density less than said first density, said inner layer being generally centrally positioned surrounding said cylindrical surface and spaced from said axial ends; a middle layer interposed at least partially between said inner and outer layers and generally surrounding said inner layer, said middle layer having a third density less than said first and second densities; and said first material surrounding said second material on at least radially outer and axially outer surfaces of said second material with said middle layer at least partially interposed therebetween, wherein an outer surface of said first material has a progressively increasing radial dimension from said axial ends toward a center of said hub.
Claim 9
Dependent Claim
58 words
A skate wheel according to claim 5 wherein said outer layer is a molded polyurethane material and said inner layer includes an annular foam ring, said ring generally centrally positioned surrounding said cylindrical surface and spaced from said axial ends; wherein said molded polyurethane material is molded onto said hub and surrounds said cylindrical surface and said ring.
Claim 10
Dependent Claim
15 words
A skate wheel according to claim 6 wherein said foam is a closed cell foam.
Claim 11
Dependent Claim
15 words
A skate wheel according to claim 5 wherein said middle layer includes entrained air bubbles.
References Cited (Backward Citations)
DE628872C
Cited
US282156A
Cited
US284009A
Cited
US285836A
Cited
US320774A
Cited
US321873A
Cited
US243979A
Cited
US1687113A
Cited
US2570349A
Cited
FR1036857A
Cited
US2878071A
Cited
DE1031192B
Cited
US3396773A
Cited
US3574317A
Cited
CH530804A
Cited
US3854516A
Cited
US4058152A
Cited
US3987832A
Cited
US3936061A
Cited
US4033395A
Cited
US4040670A
Cited
WO1980000236A1
Cited
US4294491A
Cited
US4472340A
Cited
US4699432A
Cited
US4909972A
Cited
US4855096A
Cited
EP0295081A1
Cited
US5028058A
Cited
US4966212A
Cited
US5080444A
Cited
US5018795A
Cited
US4940445A
Cited
US5073444A
Cited
US5092614A
Cited
US5351974A
Cited
IT1258267B
Cited
US5186676A
Cited
US5129709A
Cited
EP0571629A1
Cited
US5265659A
Cited
IT1258268B
Cited
US5312165A
Cited
US5362075A
Cited
US5320418A
Cited
US5310250A
Cited
US5527100A
Cited
US5401037A
Cited
US5503466A
Cited
US5411320A
Cited
US5567019A
Cited
US5573309A
Cited
EP0714682A2
Cited
US5630891A
Cited
US5632829A
Cited
US5641365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-01-18 | 2002-07-20 | 2003-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-18 | 2006-07-20 | 2007-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-18 | 2010-07-20 | 2011-01-19 | $7700.00 | Window Closed / Lapsed |