Patent US3735527A successfully refreshed from Google Patents.
US3735527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed toy transmission
Assignee: Individual
•
Filing: 1972-02-03
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Granted: 1973-05-29
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Expires: 1992-02-03
Abstract
Abstract A variable speed transmission for toy vehicles comprising a motor driven drive shaft mounting drive gear means of progressively changing diameter, the drive gear means selectively engaged at points of different diameter by a driven gear which drives a propulsion means through an elongated shaft. The driven gear is shifted relative to the drive gear means by a manually controlled lever spring biased to releasably retain an engagement of the drive and driven gears. The lever includes a selector bar which cooperates with positioning plates to set selected relationships between the drive and driven gears.
Inventors
- 👤 J Lombardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:25
CPC Classifications
A; A63; A63H; A63H31/00; A63H31/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19293; Y10T74/19349
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
105 words
In a toy vehicle, a motor, a drive shaft drivingly connected to said motor, said drive shaft mounting generally conical drive gear means thereon varying from at least a minimum diameter to a maximum diameter, propulsion means, a driven shaft drivingly connected to and extending from said propulsion means, a driven gear connected to said shaft in a manner so as to effect a driving thereof and a corresponding driving of the propulsion means, and means for engaging the driven gear with the drive gear means at selected points on the variable diameter thereof to achieve a particular gear ratio and resultant propulsion means speed.
Claim 2
Dependent Claim
105 words
In a toy vehicle, a motor, a drive shaft drivingly connected to said motor, said drive shaft mounting generally conical drive gear means thereon varying from at least a minimum diameter to a maximum diameter, propulsion means, a driven shaft drivingly connected to and extending from said propulsion means, a driven gear connected to said shaft in a manner so as to effect a driving thereof and a corresponding driving of the propulsion means, and means for engaging the driven gear with the drive gear means at selected points on the variable diameter thereof to achieve a particular gear ratio and resultant propulsion means speed.
Claim 3
Dependent Claim
63 words
The toy vehicle of Claim 1 wherein said means for engaging the driven gear with the drive gear means including spring means biasing said driven gear into engagement with said drive gear means, and lever means engaged with the driven gear for effecting a shifting of the driven gear relative to and along the drive gear means to engage at different diameters therealong.
Claim 4
Dependent Claim
35 words
The toy vehicle of claim 2 including positioning means for releasably retaining said lever means in a plurality of positions corresponding to preselected positions of engagement of the driven gear with the drive gear means.
Claim 5
Dependent Claim
77 words
The toy vehicle of claim 3 wherein said positioning means comprises a series of seats and intermediate cams, said lever means being moveable along said positioning means for selective engagement with said cams and in said seats, said driven gear, upon engagement of the lever means in a seat, engaging with the drive gear means at a preselected position, said driven gear, upon engagement of the lever means with a cam, disengaging from the drive gear means.
Claim 6
Dependent Claim
56 words
The toy vehicle of claim 4 wherein said lever means includes a selector bar transversely overlying and mounting said driven gear, said positioning means comprising a pair of laterally spaced plates, each having the seats and cams defined along the upper edge thereof, the opposite end portions of said selector bar engaging the plate upper edges.
Claim 7
Dependent Claim
21 words
The toy vehicle of claim 1 wherein said drive gear means comprises a plurality of spaced parallel gearS of different diameters.
Claim 8
Dependent Claim
15 words
The toy vehicle of claim 1 wherein said drive gear means comprises a single gear.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |