US5286043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller skate
Assignee: Individual
•
Filing: 1992-08-31
•
Granted: 1994-02-15
•
Expires: 2012-08-31
Abstract
Abstract The present invention generally relates to a roller skate, and preferably an in-line roller skate having a foot platform suspended between front and rear wheels for increased stability. One feature the present invention is a retractable wheel positioned between the front and rear wheels. Another feature of the invention is a contoured toe piece removably attached to the foot platform and a heel piece pivotably attached to the foot platform. A still further feature of the invention is that the heel piece is slidable to allow the skate to accommodate shoes of various sizes. A still further feature of the present invention is its effective and easy to use streamline brake system.
Inventors
- 👤 John Tkaczyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:06
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/14; A63C17/1436; A63C17/04; A63C17/045; A63C2017/1472
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
A roller skate for traveling along a supporting surface comprising: a foot platform; front and rear in-line wheels secured to said foot platform, said front and rear wheels having lowermost surfaces that normally engage the supporting surface; a retractable wheel between said front and rear wheels, said retractable wheel having a lowermost surface; support means for rotatably supporting said retractable wheel, said support means being movably secured to said foot platform; and control means operable by a user during use of the roller skate for moving said support means and retractable wheel between a raised position and a lowered position, said lowermost surface of said retractable wheel being in one of two locations when in said raised position, said locations being even with and above a plane formed by said lowermost surfaces of said front and rear wheels, and said lowermost surface of said retractable wheel being below said plane when in said lowered position to provide a pivot point that permits quick turning and maneuvering of the roller skate.
Claim 2
Dependent Claim
170 words
A roller skate for traveling along a supporting surface comprising: a foot platform; front and rear in-line wheels secured to said foot platform, said front and rear wheels having lowermost surfaces that normally engage the supporting surface; a retractable wheel between said front and rear wheels, said retractable wheel having a lowermost surface; support means for rotatably supporting said retractable wheel, said support means being movably secured to said foot platform; and control means operable by a user during use of the roller skate for moving said support means and retractable wheel between a raised position and a lowered position, said lowermost surface of said retractable wheel being in one of two locations when in said raised position, said locations being even with and above a plane formed by said lowermost surfaces of said front and rear wheels, and said lowermost surface of said retractable wheel being below said plane when in said lowered position to provide a pivot point that permits quick turning and maneuvering of the roller skate.
Claim 3
Dependent Claim
15 words
The roller skate of claim 1, wherein said control means is a cable control device.
Claim 4
Dependent Claim
22 words
The roller skate of claim 2, wherein said cable control device has means for biasing said retractable wheel into said raised position.
Claim 5
Dependent Claim
75 words
The roller skate of claim 1, wherein said foot platform comprises a pair of connecting members suspended from an axle of said front wheel and an axle of said rear wheel, each connecting member having a middle portion, a front end and a rear end, said middle portion being below said axles, and said connecting members being spaced to accommodate said front wheel between said front ends and said rear wheel between said rear ends.
Claim 6
Dependent Claim
21 words
The roller skate of claim 4, further comprising toe and heel pieces attached to said middle portions of said connecting members.
References Cited (Backward Citations)
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US1728063A
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US2563919A
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US2935331A
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US4058324A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |