US3871672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walking-rollerskate device
Assignee: Individual
•
Filing: 1973-05-18
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Granted: 1975-03-18
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Expires: 1993-05-18
Abstract
Abstract There is provided a forward platform and a rearward platform on which the shoe of the foot is supportable and attachable thereto with the forward and rearward platforms being attached to one another by a hinge structure, the rearward platform portion including a pair of spaced-apart wheels one on either side of the rearward platform''s rearward portion, and two separate sets of wheels and axes therefor mounted on the forward platform, one set on the rearward portion of the forward platform and the other set on the forward portion of the forward platform, the forward wheels being mounted on a support structure, the rearward platform including braking elements and a lever mechanism for activating and deactivating the brakes, and an additional lever mechanism for clamping onto the foot the rearward platform portion, at least the rearward wheels of the forward platform portion including a ratchet mechanism whereby the wheels are solely forwardly rotatable.
Inventors
- 👤 Andrew Bardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:44
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/20; Y; Y10; Y10S; Y10S273/00; Y10S273/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
A walking-skate device comprising in combination: a platform means divided into fore and aft portions; and a hinge means pivotably connecting the fore portion to the aft portion including rear wheel means mounted revolvably and supportedly on a rearward portion of the aft portion; each of fore-portion rearward and forward wheel means mounted respectively at rearward and forward portions of the fore portion supportedly and revolvably thereon, at least one of the fore-portion forward and rearward wheel means being pivotable about an upright axis; including toe-shoe-structure-securing means for retaining the fore portion onto a toe-shoe structure; and a rearward securing means for securing the rearward platform portion to a rearward portion of a shoe structure.
Claim 2
Dependent Claim
115 words
A walking-skate device comprising in combination: a platform means divided into fore and aft portions; and a hinge means pivotably connecting the fore portion to the aft portion including rear wheel means mounted revolvably and supportedly on a rearward portion of the aft portion; each of fore-portion rearward and forward wheel means mounted respectively at rearward and forward portions of the fore portion supportedly and revolvably thereon, at least one of the fore-portion forward and rearward wheel means being pivotable about an upright axis; including toe-shoe-structure-securing means for retaining the fore portion onto a toe-shoe structure; and a rearward securing means for securing the rearward platform portion to a rearward portion of a shoe structure.
Claim 3
Dependent Claim
86 words
A walking skate device of claim 1, in which the forward wheel means of the fore portion include a substantially upright axis element and a wheel support structure horizontally pivotable around the upright axis mounted pivotably on the upright axis; and the rearward wheel means of the fore portion including at least one wheel rotatably pivotable in one rotatable direction and non-rotatable in an opposite direction in the nature of a ratchet gear, the rotatable direction being forwardly permitable of forward rolling of the platform means.
Claim 4
Dependent Claim
81 words
A walking skate device of claim 2, in which at least one of the fore portion''s rearward and forward wheel means includes two laterally spaced wheels on about aligned axes, one on one side of the fore portion and the other on the other side of the fore portion; and in which at least one of the fore-portion rearward wheel means and the aft-portion rear wheel means includes braking means for breaking a rotatable wheel, including a wheel and axis therefor.
Claim 5
Dependent Claim
67 words
A walking skate device of claim 3, in which the wheel support structure of the fore-portion forward wheel means is shaped and mounted on said upright axis such that the support structure for the forward wheel swings laterally outwardly from the upright axis, and including biasing means biasing the swung-out wheel support structure of the forward wheel in a rearwardly aligned position rearward of the upright axis.
Claim 6
Dependent Claim
107 words
A walking-skate device of claim 4, in which said rearward securing portion includes vise-like clamping elements a lever means including a lever as a part of said aft portion which lever means is interconnected to the clamping element such that when the lever is pressed downwardly, as during a downwardly pressing of a shoe heel, the clamping elements are moved towards one another from opposite sides of the upright sides of a rear portion of a shoe structure in a vise-like grasping action, and locking means lockable of the lever means in a grasping state and release means unlockable of the lever means from its grasping state.
Claim 7
Dependent Claim
139 words
A walking-skate device of claim 5, in which the ratchet-gear fore-portion rearward wheel one-way rotation mechanism includes a plurality of pivotably suspended lock-keys mounted on an inner circumference of a wheel rotatable structure, including the wheel rotatable structure, and additionally including radially outwardly extending teeth positioned around an inner fixed wheel structure such that ends of the keys are lockable thereagainst whenever the wheel structure tends to rotate in a reverse-direction that would move the platform means rearwardly, said suspendedly mounted keys being mounted such that a predetermined rate of revolutions of the wheel rotatable structure serves by centrifugal momentum-force to suspend the keys'' ends in respective positions spaced away from the locking projections such that forward rotation at or above said predetermined rate of revolutions serves to pRevent wear, noise and friction of the keys against the projections.
Claim 8
Dependent Claim
125 words
A walking-skate device of claim 6, in which said braking means includes a lever element having mounted on an upper end thereof at its distal end, a handle portion upon which a first forward pressure thereagainst when there is at least a predetermined pressure and movement of the brake lever locks the brake lever in a braking state, and including a catch-lock structure mounted on at least one of said fore and aft portions lockable of the brake lever when said predetermined braking pressure is reached or exceeded, and additionally including a release-lock structure releasable of the locked brake lever upon a next consecutive braking pressure application upon the braking lever, said release-lock structure also being mounted on one of said fore and aft portions.
Claim 9
Dependent Claim
100 words
A walking-skate device of claim 7, in which said brake means includes a tubular lever and a wheel axis mounted coaxially therein, and includes a cam mounted circumscribingly around the tubular lever fixedly mounted on the tubular lever with one end of the cam fixedly mounted on structure of the platform means such that upon rotation of the tubular lever, the circumscribing cam portion is arced radially outwardly as toward a brake drum, and including a brake drum mounted within the revolvable wheel means opposite the circumscribing cam portion such that an arced cam portion frictionally engages the brake drum.
Claim 10
Dependent Claim
164 words
A walking-skate device of claim 8, in which each of the aft portion''s rear wheel means, the fore portion''s rearward wheel means, and the fore portion''s forward wheel means includes two laterally spaced-apart wheels on about aligned axes, one on one side of the platform means and the other on the other side of the platform means, the rearward securing lever means being a rearwardly extending tongue portion and the lock means thereof including a spring-biased key biased against the tongue''s distal end such that upon sufficient downward pressure upon the tongue''s distal end, the tongue''s distal end slips beyond and catches under a distal end of the spring-biased key thereby such as to lock the tongue in the depressed state, and the vise-like clamping elements being opposingly mounted facing each other on opposite edges of the aft portion onto a distal end of the tongue such that upon depressing the tongue''s distal end the clamps are pulled downwardly and inwardly laterally toward one-another.
Claim 11
Dependent Claim
44 words
A walking-skate device of claim 1, in which said fore and aft portions are mounted below axis levels of the wheel means of the fore and aft portions respectively such that the platform means is slung low with a resulting low center of gravity.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |