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US3885804A Expired / Lapsed US ⏱️ 0.0 years remaining

Roller skate

Assignee: WANE RIDER Inc
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Filing: 1973-06-13
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Granted: 1975-05-27
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Expires: 1993-06-13
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Abstract

Abstract A roller skate having a sole plate, a boot and two large canted equal sized wheels mounted on axles extending outwardly from the sole plate. The canted wheels contact the ground directly beneath the center line of the sole plate. The wheels are dished with their concave sides facing toward the sole plate and a portion of the sole plate extends into the wheel concavities to permit the sole plate to be positioned very close to the ground.

Inventors

  • 👤 Patrick J Cudmore

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 11:33
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/22

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 311 words
A roller skate comprising: a. a sole plate having a ball portion and a heel portion on its upper surface to accommodate the corresponding parts of a skater''s foot or shoe thereon, said sole plate having rigid front and rear axle mount portions along its outer margin at locations laterally aligned with said sole plate ball and heel portions, respectively; b. foot engaging means affixed to said sole plate for gripping and securely maintaining the skater''s foot or shoe against the upper surface of said sole plate; c. a front axle and a rear axle mounted in and extending downwardly from said front and rear axle mount portions, respectively, said axles being parallel to each other and being angled downwardly in excess of 28* with respect to the horizontal; d. a front wheel and an equal diameter rear wheel mounted for rotation on the outer ends of said front axle and said rear axle, respectively, said wheels having ground contacting points positioned vertically beneath the approximate front to rear center line of said sole plate; and e. a toe stop mounted on the front end of said sole plate, said top stop extending forward of said front wheel periphery; f. the point of intersection of the axis of said front wheel axle with the plane of said front wheel periphery being located in a horizontal plane which is above the upper surface of said sole plate ball portion; g. the point of intersection of the axis of said rear wheel axle with the plane of said rear wheel periphery being located in a horizontal plane which is below the upper surface of said sole plate heel portion; h. said front wheel periphery and said rear wheel periphery being spaced apart at their points of closest proximity by a distance which is less than 10% of the combined diameters of said wheels.
Claim 2
Dependent Claim 311 words
A roller skate comprising: a. a sole plate having a ball portion and a heel portion on its upper surface to accommodate the corresponding parts of a skater''s foot or shoe thereon, said sole plate having rigid front and rear axle mount portions along its outer margin at locations laterally aligned with said sole plate ball and heel portions, respectively; b. foot engaging means affixed to said sole plate for gripping and securely maintaining the skater''s foot or shoe against the upper surface of said sole plate; c. a front axle and a rear axle mounted in and extending downwardly from said front and rear axle mount portions, respectively, said axles being parallel to each other and being angled downwardly in excess of 28* with respect to the horizontal; d. a front wheel and an equal diameter rear wheel mounted for rotation on the outer ends of said front axle and said rear axle, respectively, said wheels having ground contacting points positioned vertically beneath the approximate front to rear center line of said sole plate; and e. a toe stop mounted on the front end of said sole plate, said top stop extending forward of said front wheel periphery; f. the point of intersection of the axis of said front wheel axle with the plane of said front wheel periphery being located in a horizontal plane which is above the upper surface of said sole plate ball portion; g. the point of intersection of the axis of said rear wheel axle with the plane of said rear wheel periphery being located in a horizontal plane which is below the upper surface of said sole plate heel portion; h. said front wheel periphery and said rear wheel periphery being spaced apart at their points of closest proximity by a distance which is less than 10% of the combined diameters of said wheels.
Claim 3
Dependent Claim 31 words
The roller skate of claim 1 wherein said front wheel is dished toward said sole plate, said sole plate outer margin extending into the concave dished portion of said front wheel.
Claim 4
Dependent Claim 58 words
The roller skate of claim 2 wherein the lateral horizontal distance between the sole plate center line and said outer margin is greater across said sole plate ball portion and across said sole plate heel portion than is the lateral horizontal distance between the sole plate center line and said outer margin across the sole plate arch portion.
Claim 5
Dependent Claim 20 words
The roller skate of claim 3 wherein said rear wheel is dished in the identical shape of said front wheel.
Claim 6
Dependent Claim 29 words
The roller skate of claim 1 wherein said foot engaging means is adjustably affixed to said sole plate to permit adjustment thereof to accommodate differing foot or shoe sizes.
Claim 7
Dependent Claim 34 words
The roller skate of claim 1 wherein said sole plate upper surface has portions thereof which are spaced a distance above the ground which is less than 40% of the diameter of said wheels.
Claim 8
Dependent Claim 34 words
The roller skate of claim 1 wherein said sole plate upper surface has portions thereof which are spaced a distance above the ground which is less than the greatest width of said sole plate.
Claim 9
Dependent Claim 37 words
The roller skate of claim 1 wherein tires are mounted on said wheels at an angle which is the same as the angle which said wheels form with the vertical, said tires rolling squarely on the ground.
Claim 10
Dependent Claim 27 words
The roller skate of claim 1 wherein said sole plate is a one piece integral structure having sufficient strength to accommodate the applied static and dynamic loadings.
Claim 11
Dependent Claim 28 words
The roller skate of claim 1 wherein said foot engaging means acts to position and continuously urge the skater''s foot or shoe against said sole plate outer margin.
Claim 12
Dependent Claim 22 words
The roller skate of claim 2 wherein the skater''s foot or shoe extends into the concave dished portion of said front wheel.
Claim 13
Dependent Claim 28 words
The roller skate of claim 2 wherein the plane of said front wheel periphery forms an angle within the range of 30* to 33* relative to the vertical.

References Cited (Backward Citations)

US2706119A Cited
US3387852A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-05-26 1978-11-25 1979-05-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-05-26 1982-11-25 1983-05-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-05-26 1986-11-25 1987-05-27 $7700.00 Window Closed / Lapsed

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