Patent US1720274A successfully refreshed from Google Patents.
US3604147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walking doll
Assignee: Individual
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Filing: 1969-05-28
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Granted: 1971-09-14
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Expires: 1989-05-28
Abstract
Abstract Self-walking doll having an inner motor-driven mechanism comprising a crank-operated equilateral lever arm system. Two arms of the lever arm system are articulatedly jointed to a pair of limbs, such as legs.
Inventors
- 👤 Enrico Ceccon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:28
CPC Classifications
A; A63; A63H; A63H11/00; A63H11/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
262 words
A self-walking doll having a hollow body and articulated limbs in the form of legs which are provided with feet and are moved by a mechanism located inside said hollow body of said doll; said mechanism comprising a three-arm lever pivoted about a centrally disposed pin, the axis of which is parallel to the walking direction of said doll, an upper lever arm of said threearm lever is caused to oscillate by means of a driving device about a vertical axis passing through the pivot axis of said lever, the other two arms of said three-arm lever extend in opposite direction with respect of said upper lever arm so as to project outwardly and downwardly with respect to a vertical axis of the upper lever arm, said lower arms of said three-arm lever being fixedly connected to the upper part of their cooperatively associated legs of said doll; the upper part of said doll and the legs forming an arch or curved line extending rearwardly from a vertical line through the center of gravity of said doll, the most forwardly advanced part of said curved line passes through said body substantially where said mechanism is located, so that as each foot of the doll during a walk rests on a substrate, the action or center of gravity line of the weight of said doll passes through from the heel portion of the foot to the forward part of the foot, and resilient sole means mounted under each foot providing the means for overcoming substrate unevenness and for facilitating a balanced doll equilibrium.
Claim 2
Dependent Claim
262 words
A self-walking doll having a hollow body and articulated limbs in the form of legs which are provided with feet and are moved by a mechanism located inside said hollow body of said doll; said mechanism comprising a three-arm lever pivoted about a centrally disposed pin, the axis of which is parallel to the walking direction of said doll, an upper lever arm of said threearm lever is caused to oscillate by means of a driving device about a vertical axis passing through the pivot axis of said lever, the other two arms of said three-arm lever extend in opposite direction with respect of said upper lever arm so as to project outwardly and downwardly with respect to a vertical axis of the upper lever arm, said lower arms of said three-arm lever being fixedly connected to the upper part of their cooperatively associated legs of said doll; the upper part of said doll and the legs forming an arch or curved line extending rearwardly from a vertical line through the center of gravity of said doll, the most forwardly advanced part of said curved line passes through said body substantially where said mechanism is located, so that as each foot of the doll during a walk rests on a substrate, the action or center of gravity line of the weight of said doll passes through from the heel portion of the foot to the forward part of the foot, and resilient sole means mounted under each foot providing the means for overcoming substrate unevenness and for facilitating a balanced doll equilibrium.
Claim 3
Dependent Claim
74 words
The self-walking doll according to claim 1, wherein the swinging movement of the upper lever arm of said three-arm lever is operated by a crankshaft driven by a motor, the crank head of said crankshaft is engaged in a longitudinal slot arranged in said upper lever arm so that the rotary movement of said crankshaft is transformed into a swinging movement of said upper lever arm about the pivot axis of said three-arm lever.
Claim 4
Dependent Claim
31 words
The self-walking doll according to claim 2, further including a supporting member connected to each of said lower arms of said three-arm lever, and a concentric connecting element frictionally hinged thereto.
Claim 5
Dependent Claim
21 words
The self-walking doll according to claim 3, wherein said concentric connecting elements are integral with the upper part of said legs.
Claim 6
Dependent Claim
178 words
The self-walking doll according to claim 4, wherein said supporting members are conically shaped and have their smallest cross section at their outer ends, the inner ends each project outwardly with a flat flange serving as a bearing sliding surface for a second flange forming a part of a device provided to connect each leg with the correspondingly associated conical member; said device comprising in combination with said second flange and a short tubular body so as to be adapted to be mounted concentrically around said conical supporting member with its flange in contact with that of said conical member, said second flange of said connecting device being biased against said flat flange of the conical member by resilient means acting at one of its ends against the inner surface of said second flange and anchored at the other end to said conical member so as to generate between the two facing surfaces of said flanges a friction effect which provides that the flanges and the parts connected thereto can accomplish rotary movement with respect to each other.
Claim 7
Dependent Claim
40 words
The self-walking doll according to claim 5, wherein disengageable detent locking means is provided between said two facing flanges so that in the operative disposition, the mutual position of the two flanges is defined for the walking of said doll.
Claim 8
Dependent Claim
83 words
The self-walking doll according to claim 6, wherein said locking device comprises a recess arranged in one of said facing surface, and a projection provided in the other of said flanges adapted to be engaged into said recess and so positioned that said detent means becomes operative as the doll stands up, said detent means being associated with a spring which acts so as to press one flange against the other so that said projection is precluded from coming out of said recess.
Claim 9
Dependent Claim
40 words
The self-walking doll according to claim 7, wherein said spring associated with said detent means is same spring forming said resilient means provided to enable a friction rotary movement of each leg of the doll with respect to the body.
Claim 10
Dependent Claim
41 words
The self-walking doll according to claim 7, wherein each supporting member is mounted on the corresponding lower arm of the three arm lever by means adapted to fixedly connecting the aforesaid parts each other preventing any relative rotary movement of them.
Claim 11
Dependent Claim
144 words
The self-walking doll according to claim 1, wherein said resilient sole means for each foot comprises a plate conforming to the shape of said foot, an identically shaped parallel plate spaced therefrom by means of a plurality of pins set substantially at a right angle to said plates and made integral with said lower plate, said pins sliding in guiding holes provided in the upper plate, said plates being spaced apart from each other by means of springs having a spring rate so proportionated that said springs can be only partially compressed as the whole weight of the doll discharges on one of its feet, such as that foot which rests on the floor and about which the body of the doll pivots and slightly rotates forward in order to bring forward the other leg of the doll which is in an upraised position.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |