Patent US3575531A successfully refreshed from Google Patents.
US3575531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor and gear system
Assignee: Bird Machine Co Inc
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Filing: 1968-12-11
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Granted: 1971-04-20
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Expires: 1988-12-11
Abstract
Abstract A high horsepower motor and gear system is provided in which the motor has a hollow drive shaft and the first stage drive gear has a long shaft extending through the hollow drive shaft and fixedly attached thereto at its far end, the latter shaft being sufficiently resilient to absorb positional errors which would otherwise result in high dynamic load exerted between the first gear pair. The system permits reduction in gear size which would otherwise be required, close coupling and ease of alignment between the two mentioned shafts and between the first stage drive and driven gears, being particularly useful as the drive for an aerator impeller.
Inventors
- 👤 Eliot K Buckingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:39
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C02F3/205; B; B01; B01F; B01F35/00; B01F35/30; B01F35/32; B01F35/323; F; F16; F16H; F16H1/00; F16H1/02; F16H1/20; F16H1/26; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19633
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A motor and gear system which comprises a motor of at least 5 horsepower having a hollow drive shaft and a gear train connecting said shaft to a load, the drive gear of said train having a shaft which extends coaxially through said hollow drive shaft, said shafts being secured together only at their ends remote from said drive gear to connect said motor operatively to said gear train, said drive gear shaft and the other gears of said train being mounted with their axes in fixed parallel relation, said drive gear shaft having a resistance to torsional distortion sufficiently low to absorb to a substantial extent dynamic load which would otherwise be exerted between teeth of said drive gear and a mating gear of said train.
Claim 2
Dependent Claim
127 words
A motor and gear system which comprises a motor of at least 5 horsepower having a hollow drive shaft and a gear train connecting said shaft to a load, the drive gear of said train having a shaft which extends coaxially through said hollow drive shaft, said shafts being secured together only at their ends remote from said drive gear to connect said motor operatively to said gear train, said drive gear shaft and the other gears of said train being mounted with their axes in fixed parallel relation, said drive gear shaft having a resistance to torsional distortion sufficiently low to absorb to a substantial extent dynamic load which would otherwise be exerted between teeth of said drive gear and a mating gear of said train.
Claim 3
Dependent Claim
31 words
A motor and gear system according to claim 1 wherein said motor and gear train are close coupled with said drive gear closely adjacent the near end of said motor shaft.
Claim 4
Dependent Claim
20 words
A motor and gear system according to claim 2 wherein said load is the shaft of a rotary aerator impeller.
Claim 5
Dependent Claim
38 words
A motor and gear system according to claim 3 wherein said gear train has a casing, said motor has a casing mounted on top of said gear train casing and the axes of said shafts are vertically disposed.
Claim 6
Dependent Claim
20 words
A motor and gear system according to claim 4 wherein the axes of all said shafts are in vertical alignment.
Claim 7
Dependent Claim
30 words
A motor and gear system according to claim 3 wherein said gear system rotates said impeller shaft at a substantially slower speed than the rotational speed of said motor shaft.
Claim 8
Dependent Claim
31 words
A motor and gear system according to claim 1 wherein said drive gear shaft is mounted in a bearing fixed between said drive gear and the secured-together ends of said shafts.
Claim 9
Dependent Claim
24 words
A motor and gear system according to claim 1 wherein the ratio of dynamic load to applied load is not substantially greater than 1.
References Cited (Backward Citations)
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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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |