Patent US3629680A successfully refreshed from Google Patents.
US3629680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy battery charger
Assignee: Mattel Inc
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Filing: 1970-04-17
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Granted: 1971-12-21
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Expires: 1990-04-17
Abstract
Abstract A battery charger for charging electric motor-powered toy vehicles with self-contained rechargeable batteries, the charger including a self-contained charging battery housed in a simulated vehicle service facility such as, for example, an automotive service station gasoline pump including a normally open electrical push switch connected in series with the charging battery and an electrical charging current delivery cable and connector resembling a fuel dispensing hose and nozzle. The selfcontained charging battery has a greater nominal potential than the vehicle''s rechargeable batteries and the charger electrical circuitry includes a series connected current limiting resistor to protect the rechargeable batteries from excessive sustained charging current flow.
Inventors
- 👤 William R Baynes
- 👤 John P Hiltpold
- 👤 William A Staats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
A; A63; A63H; A63H29/00; A63H29/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
A toy battery charger for use with toy vehicles having electric motor propulsion systems powered by rechargeable batteries, the propulsion systems including battery charging connectors to provide charging current from an external source, characterized by: a housing simulating a service station gasoline pump. a flexible cable extending from said housing and including a plurality of electrical conductors, said cable including an electrical connector terminating said electrical conductors and adapted to communicate with the battery charging connectors of the toy vehicles; charging battery means disposed in said housing, the battery means comprising two pairs of dry cells, the cells of each pair being connected in series and the pairs being connected in parallel whereby said battery means has a potential greater than that of the rechargeable batteries of the toy vehicles; an electrical, normally open, momentary push switch mounted on said housing and having a manually depressable spring loaded switch-actiVating platform flush with the top of said housing; and electric circuitry connecting said electrical conductors in series with said charging battery and said switch to complete the charging current circuit path between said charging battery and the vehicles'' rechargeable batteries when said switch is manually closed.
Claim 2
Dependent Claim
195 words
A toy battery charger for use with toy vehicles having electric motor propulsion systems powered by rechargeable batteries, the propulsion systems including battery charging connectors to provide charging current from an external source, characterized by: a housing simulating a service station gasoline pump. a flexible cable extending from said housing and including a plurality of electrical conductors, said cable including an electrical connector terminating said electrical conductors and adapted to communicate with the battery charging connectors of the toy vehicles; charging battery means disposed in said housing, the battery means comprising two pairs of dry cells, the cells of each pair being connected in series and the pairs being connected in parallel whereby said battery means has a potential greater than that of the rechargeable batteries of the toy vehicles; an electrical, normally open, momentary push switch mounted on said housing and having a manually depressable spring loaded switch-actiVating platform flush with the top of said housing; and electric circuitry connecting said electrical conductors in series with said charging battery and said switch to complete the charging current circuit path between said charging battery and the vehicles'' rechargeable batteries when said switch is manually closed.
Claim 3
Dependent Claim
30 words
A toy battery charger according to claim 1, wherein said electric circuitry includes a current limiting resistor connected in series with the series connected conductors, charging battery means and switch.
Claim 4
Dependent Claim
42 words
A toy battery charger according to claim 1, wherein the nominal terminal voltage of the rechargeable battery in each of the toy vehicles is approximately 1.2 volts, and wherein the nominal terminal voltage of the series connected cells is approximately 3 volts.
Claim 5
Dependent Claim
20 words
A toy battery charger according to claim 2, wherein said current limiting resistor has a value of approximately 710 milliohms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |