US3876217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin-roller skates adjustable to a shoe
Assignee: Individual
•
Filing: 1973-08-20
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Granted: 1975-04-08
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Expires: 1993-08-20
Abstract
Abstract There is disclosed a twin-wheeled skate which, by its construction, is particularly adaptable for use on sloping and uneven grounds. For this purpose, it is made up of a foot-rest base plate and of a front and of a rear wheel mounted for free rotation each at one end of the base plate and about rotation axes that lie above the plate, at least the front wheel being mounted for oscillation about an axis that lies forwardly with respect to the base plate. The oscillating axis intersects the general plane of the base plate whereby the front wheel may oscillate laterally with respect to the foot-rest base plate. The oscillation is produced by means of a U-shaped bracket having the ends of the branches secured to the base plate, the front wheel being mounted for rotation at the ends of a fork-like support lying within the bracket and mounted, at its tip, on the tip of the U-shaped bracket for rocking motion about the oscillation axis. The front wheel itself is mounted for free rotation at the ends of the fork-like support.
Inventors
- 👤 Henri Copier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:41
CPC Classifications
B; B62; B62K; B62K21/00; A; A63; A63C; A63C17/00; A63C17/04; A63C17/045; A63C17/06; A63C17/061; A63C17/064; B62K3/00; B62K3/002; B62K3/02; B62K3/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
201 words
Twin-wheeled skate especially adapted for use on uneven ground, comprising: a foot-rest base plate and a front wheel and a rear wheel mounted for free rotation each at one end of said base plate and about rotation axes lying above said base plate; means mounting said front wheel for oscillation thereof about an axis lying forwardly of said front wheel with respect to said base plate, said oscillation axis intersecting the general plane of said base plate whereby said front wheel may oscillate laterally with respect to said base plate; a U-shaped bracket extending from the forward end of said base plate with the ends of the branches of said bracket secured to said base plate; a fork-like support between the branches of said bracket and means mounting the tip of said support on the tip of said U-shaped bracket for rocking motion about said oscillation axis, and bearing means mounting said forward wheel for free rotation at the ends of said fork-like support; said tip of said U-shaped bracket being located at substantially the same level as the rotation axis of said forward wheel and in the central longitudinal vertical plane of said base plate, said oscillation axis being vertical.
Claim 2
Dependent Claim
201 words
Twin-wheeled skate especially adapted for use on uneven ground, comprising: a foot-rest base plate and a front wheel and a rear wheel mounted for free rotation each at one end of said base plate and about rotation axes lying above said base plate; means mounting said front wheel for oscillation thereof about an axis lying forwardly of said front wheel with respect to said base plate, said oscillation axis intersecting the general plane of said base plate whereby said front wheel may oscillate laterally with respect to said base plate; a U-shaped bracket extending from the forward end of said base plate with the ends of the branches of said bracket secured to said base plate; a fork-like support between the branches of said bracket and means mounting the tip of said support on the tip of said U-shaped bracket for rocking motion about said oscillation axis, and bearing means mounting said forward wheel for free rotation at the ends of said fork-like support; said tip of said U-shaped bracket being located at substantially the same level as the rotation axis of said forward wheel and in the central longitudinal vertical plane of said base plate, said oscillation axis being vertical.
Claim 3
Dependent Claim
58 words
Skate as claimed in claim 1, wherein said oscillation axis is perpendicular to the general plane of said fork-like support, said support being narrower than said bracket whereby to allow oscillation thereof and oscillation of said forward wheel mounted for rotation thereof, said forward wheel coming to butt against the branches of said U-shaped bracket during its oscillation.
Claim 4
Dependent Claim
21 words
Skate as claimed in claim 2 wherein said oscillation axis lies in the central longitudinal vertical plane of said base plate.
Claim 5
Dependent Claim
25 words
Skate as claimed in claim 3, including braking pads secured to said branches of said bracket to smoothen the abutment of said forward wheel thereagainst.
Claim 6
Dependent Claim
26 words
Skate as claimed in claim 3, including adjustable stops on said branches of said bracket to control the magnitude of oscillation of said support and wheel.
Claim 7
Dependent Claim
44 words
Skate as claimed in claim 1, including means mounting the rearward wheel for oscillation about an axis lying forwardly of said rear wheel with respect to said base plate, said oscillation axis of said rear wheel intersecting the general plane of said base plate.
Claim 8
Dependent Claim
85 words
Skate as claimed in claim 6, wherein said rear wheel oscillation means comprises: a U-shaped bracket extending from one end of said base plate with the ends of the branches thereof secured to said base plate; a fork-like support within said bracket and means mounting the tip of said support on the tip of said U-shaped bracket for rocking motion about said oscillation axis of said rear wheel, and bearing means mounting said rear wheel for free rotation at the ends of said fork-like support.
Claim 9
Dependent Claim
48 words
Skate as claimed in claim 7, wherein said rocking motion means for said rear wheel is a joint located at substantially the same level as the rotation axis of said rear wheel and in the longitudinal central vertical plane of said base plate, said oscillation axis being vertical.
Claim 10
Dependent Claim
136 words
A two-wheeled skate especially adapted for use on uneven ground, comprising: a foot-support base plate having a wheel rotatably mounted at each end thereof, the rotation axes of said wheels being above said base plate; a generally U-shaped bracket extending from at least one end of said base plate with the ends of the legs thereof secured to said base plate; a generally U-shaped support between the legs of said bracket with the bight portion of said U-shaped support pivotally mounted on the bight portion of said bracket about a generally upright axis; and one of said wheels being journalled on an axis extending between the legs of said U-shaped support, said wheel being between the legs of said bracket and being swingable, about said upright axis, into braking engagement with either leg of said bracket.
Claim 11
Dependent Claim
136 words
A two-wheeled skate especially adapted for use on uneven ground, comprising: a foot-support base plate having a wheel rotatably mounted at each end thereof, the rotation axes of said wheels being above said base plate; a generally U-shaped bracket extending from at least one end of said base plate with the ends of the legs thereof secured to said base plate; a generally U-shaped support between the legs of said bracket with the bight portion of said U-shaped support pivotally mounted on the bight portion of said bracket about a generally upright axis; and one of said wheels being journalled on an axis extending between the legs of said U-shaped support, said wheel being between the legs of said bracket and being swingable, about said upright axis, into braking engagement with either leg of said bracket.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |