US3416016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed reduction apparatus for automotive vehicles
Assignee: Hitachi Ltd
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Filing: 1966-01-04
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Granted: 1968-12-10
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Expires: 1986-01-04
Abstract
No abstract record available.
Inventors
- 👤 Murakami Tadao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:52
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; B; B60; B60K; B60K31/00; B60K31/02; B60T; B60T13/00; B60T13/74; F; F16; F16D; F16D63/00; F16D63/002; H02K49/043; H02P; H02P29/00; H02P29/0016; H02P29/0022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
SPEED REDUCTION APPARATUS FOR AUTOMOTIVE VEHICLES COMPRISING AN OUTER CASING SECURED TO A STATIONARY PORTION OF THE VEHICLE BODY, A ROTARY SHAFT EXTENDING THROUGH SAID CASING AND CONNECTED WITH THE PROPELLER SHAFT OF THE VEHICLE, A ROTOR MOUNTED ON SAID ROTARY SHAFT FOR UNITARY ROTATION THEREWITH AND HAVING EXCITING COILS OF BREAKING MEANS FIXEDLY MOUNTED THEREON AND POWER GENERATING COILS OF AN AC GENERATOR, SAID GENERATOR HAVING ITS FIELD COILS DISPOSED OPPOSITE SAND POWER GENERATING COILS ON SAID ROTOR, A STATOR DISPOSED IN SAID CASING IN A MANNER TO BE CONCENTRICALLY OPPOSED IN SUITABLY SPACED RELATION BY SAID ROTOR AND SAID CASING SO THAT MAGNETOMOTIVE FORCE GENERATED IN SAID EXCITING COILS OF SAID BRAKING MEANS CAN PRODUCE AN EDDY CURRENT ON THAT FACE PORTION OF SAID STATOR WHICH IS OPPOSITE TO SAID ROTOR, MEANS FOR CONNECTING SAID FIELD COILS OF SAID AC GENERATOR TO A BATTERY THROUGH SWITCH MEANS, AND MEANS FOR CONNECTING THE OUTPUT TERMINALS OF SAID POWER GENERATING COILS OF SAID AC GENERATOR TO SAID EXCITING COILS OF SAID BRAKING MEANS THROUGH RECTIFIER MEANS.
Claim 2
Dependent Claim
176 words
SPEED REDUCTION APPARATUS FOR AUTOMOTIVE VEHICLES COMPRISING AN OUTER CASING SECURED TO A STATIONARY PORTION OF THE VEHICLE BODY, A ROTARY SHAFT EXTENDING THROUGH SAID CASING AND CONNECTED WITH THE PROPELLER SHAFT OF THE VEHICLE, A ROTOR MOUNTED ON SAID ROTARY SHAFT FOR UNITARY ROTATION THEREWITH AND HAVING EXCITING COILS OF BREAKING MEANS FIXEDLY MOUNTED THEREON AND POWER GENERATING COILS OF AN AC GENERATOR, SAID GENERATOR HAVING ITS FIELD COILS DISPOSED OPPOSITE SAND POWER GENERATING COILS ON SAID ROTOR, A STATOR DISPOSED IN SAID CASING IN A MANNER TO BE CONCENTRICALLY OPPOSED IN SUITABLY SPACED RELATION BY SAID ROTOR AND SAID CASING SO THAT MAGNETOMOTIVE FORCE GENERATED IN SAID EXCITING COILS OF SAID BRAKING MEANS CAN PRODUCE AN EDDY CURRENT ON THAT FACE PORTION OF SAID STATOR WHICH IS OPPOSITE TO SAID ROTOR, MEANS FOR CONNECTING SAID FIELD COILS OF SAID AC GENERATOR TO A BATTERY THROUGH SWITCH MEANS, AND MEANS FOR CONNECTING THE OUTPUT TERMINALS OF SAID POWER GENERATING COILS OF SAID AC GENERATOR TO SAID EXCITING COILS OF SAID BRAKING MEANS THROUGH RECTIFIER MEANS.
References Cited (Backward Citations)
US3184626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |