Patent US5901970A successfully refreshed from Google Patents.
US5901970A
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Metal wheels for roller ice skates
Assignee: HENSHAW RICHARD C JR TRUSTEE OF RICHARD C HENSHAW REVOCABLE TRUST
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Filing: 1996-02-16
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Granted: 1999-05-11
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Expires: 2016-02-16
Abstract
Abstract Novel tempered rust resistant steel wheels for installation on conventional in-line four wheel roller skates, parallel four wheel roller skates, and, in-line five wheel roller skates that convert traditional ground roller skates into ice skates. The novel wheels can have different diameters, thicknesses and varying concave edges. The diameters and sizes of the tempered rust resistant steel wheels must be the same as the roller skates' composition or rubber type wheels, except for the thickness of the wheels can be 1/4 inch, 3/16 inch for in-line skates and 1/4 to 1/2 inches for a parallel wheel roller skate. The heights of the sharpened concave edges for the steel wheels can be approximately 30/1000" to approximately 40/1000". Optional scraper bars can be used. The wheels can be used for making ice skates used for figure, dance, pair, freestyle, and recreational skating. An mathematical algorithm and equations are disclosed that determines the desired convex edge dimensions on a cutting bit that conforms to a concave edge on the wheel using a selected wheel thickness and concave curvature edge heights.
Inventors
- 👤 Richard C. Henshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:37
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/18; A63C1/00; A63C1/30; A63C1/306; A63C1/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A rust resistant steel wheel that can be substituted for rubber and composited wheels for attachment to existing roller skates, the wheel comprising: a main disc portion formed from rust resistant steel; and a sharpened concave edge running along both exterior sides of an outer circumference of the disc portion, wherein the wheel can be substituted for rubber and composite wheels used on an existing roller skate, each sharpened edge having parallel concave edges has a height of approximately 30/1000 to 40/1000 of an inch, and a diameter of approximately 2 to approximately 3 inches.
Claim 2
Dependent Claim
95 words
A rust resistant steel wheel that can be substituted for rubber and composited wheels for attachment to existing roller skates, the wheel comprising: a main disc portion formed from rust resistant steel; and a sharpened concave edge running along both exterior sides of an outer circumference of the disc portion, wherein the wheel can be substituted for rubber and composite wheels used on an existing roller skate, each sharpened edge having parallel concave edges has a height of approximately 30/1000 to 40/1000 of an inch, and a diameter of approximately 2 to approximately 3 inches.
Claim 3
Dependent Claim
18 words
The rust resistant steel wheel of claim 1, wherein the existing roller skate includes: an in-line roller skate.
Claim 4
Dependent Claim
38 words
The rust resistant steel wheel of claim 1 in combination with ice skates, further including: a scraper bar mounted adjacent to each wheel for constantly wiping off ice and slush buildup while each wheel is rotating during use.
Claim 5
Dependent Claim
92 words
A rust resistant steel wheel that can be substituted for rubber and composited wheels for attachment to existing roller skates, the wheel comprising: a main disc portion formed from rust resistant steel; a sharpened concave edge running along both exterior sides of an outer circumference of the disc portion; and a diameter of approximately 3 inches, a thicknesses of approximately 1/4 inch, and sharpened concave edge heights of approximately 30/1000 to 40/1000 of an inch, wherein the wheel can be substituted for rubber and composite wheels used on an existing roller skate.
Claim 6
Dependent Claim
92 words
A rust resistant steel wheel that can be substituted for rubber and composited wheels for attachment to existing roller skates, the wheel comprising: a main disc portion formed from rust resistant steel; a sharpened concave edge running along both exterior sides of an outer circumference of the disc portion; and a diameter of approximately 3 inches, a thicknesses of approximately 1/4 inch, and sharpened concave edge heights of approximately 30/1000 to 40/1000 of an inch, wherein the wheel can be substituted for rubber and composite wheels used on an existing roller skate.
Claim 7
Dependent Claim
20 words
The rust resistant steel wheel of claim 4, the existing roller skate including: a four wheel in-line roller ice skate.
Claim 8
Dependent Claim
94 words
A rust resistant steel wheel that can be substituted for rubber and composited wheels for attachment to existing roller skates, the wheel comprising: a main disc portion formed from rust resistant steel; a sharpened concave edge running along both exterior sides of an outer circumference of the disc portion; and a diameter of approximately 2 and 1/2 inches, a thickness of approximately 3/16 inch and sharpened concave edge heights of approximately 30/1000 to 40/1000 of an inch, wherein the wheel can be substituted for rubber and composite wheels used on an existing roller skate.
Claim 9
Dependent Claim
94 words
A rust resistant steel wheel that can be substituted for rubber and composited wheels for attachment to existing roller skates, the wheel comprising: a main disc portion formed from rust resistant steel; a sharpened concave edge running along both exterior sides of an outer circumference of the disc portion; and a diameter of approximately 2 and 1/2 inches, a thickness of approximately 3/16 inch and sharpened concave edge heights of approximately 30/1000 to 40/1000 of an inch, wherein the wheel can be substituted for rubber and composite wheels used on an existing roller skate.
Claim 10
Dependent Claim
20 words
The rust resistant steel wheel of claim 6, the existing roller skate including: a five wheel in-line roller ice skate.
References Cited (Backward Citations)
US284009A
Cited
US480610A
Cited
DE392450C
Cited
US657790A
Cited
GB190929137A
Cited
US1489197A
Cited
US2048916A
Cited
DE682058C
Cited
GB571048A
Cited
CH357010A
Cited
GB1120895A
Cited
US3537716A
Cited
US3552746A
Cited
US3689091A
Cited
US3807062A
Cited
DE2328256A1
Cited
US4043656A
Cited
US4108450A
Cited
US4323259A
Cited
US4699390A
Cited
US4492385A
Cited
US4709937A
Cited
US5129663A
Cited
US5340132A
Cited
US5259632A
Cited
US5193827A
Cited
US5320366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-05-10 | 2002-11-09 | 2003-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-10 | 2006-11-09 | 2007-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-10 | 2010-11-09 | 2011-05-11 | $7700.00 | Window Closed / Lapsed |