Patent US3659780A successfully refreshed from Google Patents.
US3659780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric odometer drive
Assignee: Ford Motor Co
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Filing: 1970-11-30
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Granted: 1972-05-02
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Expires: 1990-11-30
Abstract
Abstract An electrically operated odometer including an electric motor, a plurality of odometer rolls and reduction gearing preferably in the form of series connected worm and worm gear sets coupling the electric motor to the odometer rolls. A plastic housing completely encloses the electric motor and the reduction gears with the housing being positioned in spaced relationship to the electric motor. The electric motor is alternately energized and de-energized by suitable switching arrangements to drive the odometer rolls, and the reduction gearing provides high torque and minimum overrun on the odometer rolls.
Inventors
- 👤 Gary Floyd Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
G; G01; G01C; G01C22/00; G01C22/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
201 words
An electrically operated odometer comprising, an electric motor, a plurality of odometer rolls, reduction gears coupling said electric motor to said odometer rolls, a plastic housing enclosing said electric motor and said reduction gears, a metal frame member positioned in said housing between said electric motor and said reduction gears, said reduction gears including a pair of worm and worm gear sets connected in series, said electric motor including an armature shaft extending through said frame, the worm of said first worm and gear set positioned on said armature shaft, a cross shaft rotatably mounted in said frame, said cross shaft having the worm gear of said first worm and gear set and the worm of said second worm and gear set positioned thereon, said odometer rolls having an odometer shaft extending in parallel relationship to said armature shaft, one end of said odometer shaft rotatably mounted in said frame, the worm of said second worm and gear set positioned on said odometer shaft, and means coupled to said electric motor and said frame for supporting said motor from said frame in cantilever fashion from one end of said motor, said housing being spaced from said motor at all other locations.
Claim 2
Dependent Claim
201 words
An electrically operated odometer comprising, an electric motor, a plurality of odometer rolls, reduction gears coupling said electric motor to said odometer rolls, a plastic housing enclosing said electric motor and said reduction gears, a metal frame member positioned in said housing between said electric motor and said reduction gears, said reduction gears including a pair of worm and worm gear sets connected in series, said electric motor including an armature shaft extending through said frame, the worm of said first worm and gear set positioned on said armature shaft, a cross shaft rotatably mounted in said frame, said cross shaft having the worm gear of said first worm and gear set and the worm of said second worm and gear set positioned thereon, said odometer rolls having an odometer shaft extending in parallel relationship to said armature shaft, one end of said odometer shaft rotatably mounted in said frame, the worm of said second worm and gear set positioned on said odometer shaft, and means coupled to said electric motor and said frame for supporting said motor from said frame in cantilever fashion from one end of said motor, said housing being spaced from said motor at all other locations.
Claim 3
Dependent Claim
29 words
The combination of claim 1 in which the speed reduction ratio of said pair of worm and worm gear sets is in the range of about 500:1 to 750:1.
Claim 4
Dependent Claim
28 words
The combination of claim 1 and comprising further a commutator carried by said cross shaft and contacts engaging said commutator and connected in circuit with said electric motor.
Claim 5
Dependent Claim
22 words
The combination of claim 3 in which said commutator includes means energizing said motor during each half revolution of said cross shaft.
Claim 6
Dependent Claim
63 words
The combination of claim 1 in which said plastic housing has a generally cup shaped portion with an integrally formed end wall receiving said electric motor, the inner dimension of said cup shaped portion being slightly greater than the outer dimension of said electric motor and the length of said cup shaped portion being slightly greater than the length of said electric motor.
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |