Patent US6848750B2 successfully refreshed from Google Patents.
US6848750B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generation of in-line skates and skate-boards with safety “edging friction control™”
Assignee: Individual
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Filing: 2003-06-17
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Granted: 2005-02-01
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Expires: 2023-06-17
Abstract
Abstract The frame of an in-line skate (FIG. 8B) supports a wheel ( 10 ), allowing a skater to effectively slow down and stop, using an athletic stance that skiers on snow and ice skaters on ice use. The wheel ( 10 ) has a hub ( 20 A), allowing a wheel to rotate around the axle ( 13 A) vertically and at an inclination. The hub has axle roller bearings ( 23 B). The wheel ( 10 ) includes friction band surfaces ( 11 A) on the sides of the wheel. When rotating at an inclination the wheel's friction surface contacts a friction surface ( 11 B), inside the wheel-well or an axle friction surface or a combination thereof to slow or brake the wheel. The wheel ( 10 ) assembly includes self-aligning springs ( 14 A/B). Individual parts can be technically designed to allow various model solutions that will satisfy the abilities of a beginner to an expert. The wheel assembly frame can be attached to an in-line skate, an in-line skateboard, a downhill in-line ski and a downhill in-line skateboard.
Inventors
- 👤 Myron Stuart Hurwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:25
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/0066; A63C17/14; A63C17/1409; A63C17/1427; A63C17/22; A63C17/223; A63C17/04; A63C17/06
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
68 words
A spherical bearing assembly comprising: an inner ring member defining a vertical axis and having a bore extending in a direction transverse with respect to the vertical axis; an outer ring member mounted with respect to the inner ring to permit inclined rotation of outer ring with respect to the vertical axis; and, a spring structure constructed and arranged to bias the outer ring towards the vertical axis.
Claim 2
Dependent Claim
68 words
A spherical bearing assembly comprising: an inner ring member defining a vertical axis and having a bore extending in a direction transverse with respect to the vertical axis; an outer ring member mounted with respect to the inner ring to permit inclined rotation of outer ring with respect to the vertical axis; and, a spring structure constructed and arranged to bias the outer ring towards the vertical axis.
Claim 3
Dependent Claim
22 words
The bearing assembly of claim 1 , wherein the spring structure comprises a compression spring between the inner and outer ring member.
Claim 4
Dependent Claim
37 words
The bearing assembly of claim 2 , wherein said compression spring is one of a self-lubricated: wire coil spring; an accordion pleated sheet alloy spring; an accordion pleated reinforced sheet rubberized spring; and, a urethane compression spring.
Claim 5
Dependent Claim
65 words
A wheeled device comprising: a wheel frame; at least one wheel mounted on an axle associated with the wheel frame; wherein said wheel is constructed and arranged to rotate around said axle with respect to a vertical axis and at inclinations in apposing directions about the vertical axis and spring structure constructed and arranged to bias the wheel in opposing directions toward the vertical axis.
Claim 6
Dependent Claim
65 words
A wheeled device comprising: a wheel frame; at least one wheel mounted on an axle associated with the wheel frame; wherein said wheel is constructed and arranged to rotate around said axle with respect to a vertical axis and at inclinations in apposing directions about the vertical axis and spring structure constructed and arranged to bias the wheel in opposing directions toward the vertical axis.
Claim 7
Dependent Claim
18 words
The wheeled device as defined in claim 4 , wherein said wheel is of generally a parabolic shape.
Claim 8
Dependent Claim
31 words
The wheeled device as defined in claim 5 , wherein said wheel has concave depressions on each side of said wheel, providing clearance to allow inclined wheel rotation around said axle.
Claim 9
Dependent Claim
16 words
The wheeled device as defined in claim 6 , wherein said wheel has concave depression frames.
Claim 10
Dependent Claim
30 words
The wheel device as defined in claim 7 , wherein said concave depression frames have indentations to retain self-aligning springs to reposition an inclined wheel back into a vertical position.
Claim 11
Dependent Claim
48 words
The wheeled device as defined in claim 8 , wherein said self-aligning springs are one of constant force open coil springs, accordion pleated sheet metal alloy springs, and accordion pleated reinforced rubberized springs, wherein the pleated springs are configured to serve a dual purpose as a dust cover.
Claim 12
Dependent Claim
24 words
The wheeled device as defined in claim 7 , wherein said concave depression frames include means for securing a dust cover to the wheel.
Claim 13
Dependent Claim
33 words
The wheeled device as defined in claim 10 , wherein a dust cover is coupled with the securing means and said dust cover is an accordion pleated rubberized component with a self-lubricated collar.
Claim 14
Dependent Claim
21 words
The wheeled device as defined in claim 4 , wherein the wheel frame has a wheel-well contoured to compliment said wheel.
Claim 15
Dependent Claim
54 words
The wheeled device as defined in claim 4 , wherein said wheel has a dynamic spherical bearing, having outer and inner rings, each ring being omnidirectional to each other, allowing said wheel to rotate both vertically and at an inclination and wherein said spherical bearing's inner ring has a concentric opening defining a bore.
Claim 16
Dependent Claim
31 words
The wheeled device as defined in claim 13 , wherein the bore has at least one axle bearing therein that enables said wheel to rotate with minimal friction around said axle.
Claim 17
Dependent Claim
26 words
The wheeled device as defined in claim 14 , wherein the axle bearing is one of a roller ball axle bearing and needle roller axle bearing.
Claim 18
Dependent Claim
19 words
The wheeled device as defined in claim 13 , wherein said wheel has friction members on each side thereof.
Claim 19
Dependent Claim
28 words
The wheeled device defined in claim 16 , wherein the wheel frame has a wheel-well and the wheel-well has a friction surface within opposite sides of said wheel-well.
Claim 20
Dependent Claim
29 words
The wheeled device as defined in claim 17 , wherein said wheel, when rotating vertically has predetermined clearance between the friction members and said friction surfaces in said wheel-well.
Claim 21
Dependent Claim
40 words
The wheel device as defined in claim 17 , wherein said wheel, when rotating at a certain inclination, has one friction member in contact with a friction surface of said wheel-well to cause slowing down and braking of said wheel.
Claim 22
Dependent Claim
27 words
The wheeled device as defined in claim 13 , wherein said spherical bearing further includes an integral compression spring to bias the wheel towards vertical rotation thereof.
Claim 23
Dependent Claim
33 words
The wheeled device as defined in claim 4 , wherein the wheel frame is attached to one of an in-line skate, an in-line skateboard, a downhill in-line ski and a downhill in-line skateboard.
Claim 24
Dependent Claim
91 words
A wheeled device comprising: a wheel frame; at least one wheel mounted on an axle for rotation with respect to the wheel frame; the axle including friction contact surfaces; the wheel including friction control surfaces; and, wherein the at least one wheel is constructed and arranged to rotate around the axle both vertically and at an inclination, such that when the wheel is at a certain inclination, the friction control surfaces of said wheel engage the friction contact surfaces of said axle to cause slowing down and braking of said wheel.
Claim 25
Dependent Claim
91 words
A wheeled device comprising: a wheel frame; at least one wheel mounted on an axle for rotation with respect to the wheel frame; the axle including friction contact surfaces; the wheel including friction control surfaces; and, wherein the at least one wheel is constructed and arranged to rotate around the axle both vertically and at an inclination, such that when the wheel is at a certain inclination, the friction control surfaces of said wheel engage the friction contact surfaces of said axle to cause slowing down and braking of said wheel.
Claim 26
Dependent Claim
31 words
The wheeled device as defined in claim 22 , wherein said wheel has concave depressions on each side of said wheel, providing clearance to allow inclined wheel rotation around said axle.
Claim 27
Dependent Claim
16 words
The wheeled device as defined in claim 23 , wherein the wheel has concave depression frames.
Claim 28
Dependent Claim
29 words
The wheeled device as defined in claim 24 , wherein the wheel has an indentation in said concave depression frames retaining a friction element defining the friction control surface.
Claim 29
Dependent Claim
46 words
The wheeled device as defined in claim 25 , wherein said wheel includes a spherical bearing hub having an integral compression spring, thereby not only providing for inclined wheel position but also providing the added function of self-alignment of the wheel, thereby serving a dual purpose.
Claim 30
Dependent Claim
36 words
The wheeled device as defined in claim 26 , further including at least one axle bearing in a bore of the spherical bearing hub that enables said wheel to rotate with minimal friction around said axle.
Claim 31
Dependent Claim
27 words
The wheeled device as defined in claim 27 , wherein said axle bearing is one of a roller ball axle bearing and a needle roller axle bearing.
Claim 32
Dependent Claim
29 words
The wheeled device as defined in claim 27 , wherein said axle is threaded on the outside surface at each end of said axle to an outside face thereof.
Claim 33
Dependent Claim
24 words
The wheeled device as defined in claim 29 , wherein the axle has a washer spacer disposed over said axle at each end thereof.
Claim 34
Dependent Claim
44 words
The wheeled device of claim 30 , wherein a round friction disk, with a center bore having inside threads that match the outside threads on the surface of said axle, is screwed onto said axle at each end and locked to said washer spacer.
Claim 35
Dependent Claim
53 words
The wheeled device as defined in claim 31 , wherein said axle has inside threads set into each end of the axle to receive outside cap screws that are set tight against the outside face of said wheel frame, effectively double locking said friction disk securely in place to prevent it from turning.
Claim 36
Dependent Claim
26 words
The wheeled device as defined in claim 31 , wherein said friction disk has a friction material on a perimeter thereof defining a friction contact surface.
Claim 37
Dependent Claim
31 words
The wheeled device as defined in claim 33 , wherein when rotating vertically, said concave depression frame's friction element has predetermined clearance with respect to said friction disk's perimeter friction material.
Claim 38
Dependent Claim
93 words
The wheeled device as defined in claim 33 , wherein when the wheel is rotating at an inclination, surfaces of the concave frame's friction element simultaneously contact with said friction material of the friction disk at two contact locations, one contact location being at the top of the friction disk at one side of the wheel and the other contact location being at the bottom of the friction disk at the opposite wheel side, and wherein realignment of said wheel to vertical rotation is achieved by the force of the integral compression spring.
Claim 39
Dependent Claim
24 words
The wheeled device as defined in claim 25 , wherein said wheel has a friction surface material included on each side of said wheel.
Claim 40
Dependent Claim
69 words
The wheeled device as defined in claim 36 , wherein the frame includes a wheel-well, the wheel-well having opposing friction surfaces arranged such that, when the wheel is rotating vertically, there is predetermined clearance between the wheel's friction surface material on the sides of the wheel and said friction surfaces in the wheel-well and between the wheel's concave depression frame's friction element and said friction disk's perimeter friction material.
Claim 41
Dependent Claim
83 words
The wheeled device as defined in claim 36 , wherein the frame includes a wheel-well, the wheel-well having opposing friction surfaces arranged such that; when the wheel is rotating at an inclination, there are three simultaneous friction contacts: one with said wheel-well friction surface and the wheel's friction member and two simultaneously with said friction disk and wheel's friction element on each side of said wheel, realigmnent of said wheel to vertical rotation is achieved by the force of the integral compression spring.
Claim 42
Dependent Claim
75 words
The wheeled device as defined in claim 38 , wherein said wheel includes external self-aligning springs that are attached to said concave depression frames, said springs being located at each end of said axle such that: when the wheel is rotating at an inclination, there are two simultaneous self-aligning spring locations; one at the wheel hub's integral compression spring and one by the pair of said seIf-aligning springs located at each end of said axle.
Claim 43
Dependent Claim
45 words
The wheeled device as defined in claim 39 , wherein said external self-aligning springs are one of an accordion pleated sheet metal alloy spring and an accordion pleated reinforced rubberized spring, wherein the pleated springs are configured to serve a dual function as dust covers.
Claim 44
Dependent Claim
33 words
The wheeled device as defined in claim 39 , wherein the wheel frame is mounted to one of an in-line skate, an in-line skateboard, a downhill in-line ski and a downhill in-line skateboard.
Claim 45
Dependent Claim
18 words
The wheeled device as defined in claim 38 , wherein said wheel is in a generally parabolic shape.
Claim 46
Dependent Claim
33 words
The wheeled device as defined in claim 38 , wherein the wheel frame is mounted to one of an in-line skate, an in-line skateboard, a downhill in-line ski and a downhill in-line skateboard.
Claim 47
Dependent Claim
33 words
The wheeled device as defined in claim 22 , wherein the wheel frame is attached to one of an in-line skate, an in-line skateboard, a downhill in-line ski and a downhill in-line skateboard.
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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) | 2008-02-01 | 2008-08-02 | 2009-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-02-01 | 2012-08-02 | 2013-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-02-01 | 2016-08-02 | 2017-02-01 | $7700.00 | Window Closed / Lapsed |