US4734590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated drive generator with common center line
Assignee: Sundstrand Corp
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Filing: 1986-12-30
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Granted: 1988-03-29
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Expires: 2006-12-30
Abstract
Abstract An integrated drive generator system in which all of the main components of the system are mounted for operation about a single centerline. A housing mounts a drive input shaft. A differential is coupled to and arranged coaxially of the drive input shaft. A generator is coupled to the differential and includes a rotor coaxially of the drive input shaft. A hydraulic log includes a hydraulic pump and motor assembly coupled to the differential and arranged coaxially of the drive input shaft. An exciter also is employed coaxially of the drive input shaft, surrounding the differential, and a compact cooling system includes cooling passages integral with the housing and in close proximity to the stator of the generator.
Inventors
- 👤 Theodore D. Fluegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:01
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/006; F; F16; F16H; F16H47/00; F16H47/02; F16H47/04; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H2037/088
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
62 words
An integrated drive generator system, comprising a housing mounting drive input shaft means, differential means coupled to and arranged coaxially of the drive input shaft means, generator means coupled to the differential means and including a rotor coaxially of the drive input shaft means, and hydraulic log means coupled to the differential means and arranged coaxially of the drive input shaft means.
Claim 2
Dependent Claim
62 words
An integrated drive generator system, comprising a housing mounting drive input shaft means, differential means coupled to and arranged coaxially of the drive input shaft means, generator means coupled to the differential means and including a rotor coaxially of the drive input shaft means, and hydraulic log means coupled to the differential means and arranged coaxially of the drive input shaft means.
Claim 3
Dependent Claim
24 words
The integrated drive generator system of claim 1 wherein said differential means are located axially between the generator means and the hydraulic log means.
Claim 4
Dependent Claim
25 words
The integrated drive generator system of claim 2 wherein said input shaft means extend through the differential means for connection to the hydraulic log means.
Claim 5
Dependent Claim
31 words
The integrated drive generator system of claim 3 wherein said differential means include rotary sleeve means about the input shaft means, the rotary sleeve means being connected to the generator rotor.
Claim 6
Dependent Claim
33 words
The integrated drive generator system of claim 4 wherein said differential means include a planetary gearset, and said rotary sleeve means is defined in part by a ring gear of the planetary gearset.
Claim 7
Dependent Claim
20 words
The integrated drive generator system of claim 1 wherein said hydraulic log means comprises a hydraulic pump and motor assembly.
Claim 8
Dependent Claim
34 words
The integrated drive generator system of claim 1 wherein said housing surrounds the generator means in close proximity to the periphery thereof, and including cooling passage means integral with the housing about the generator.
Claim 9
Dependent Claim
36 words
The integrated drive generator system of claim 7 wherein said generator means include a stator about the rotor, with said integral cooling passage means being disposed in an interior wall of the housing surrounding the stator.
Claim 10
Dependent Claim
21 words
The integrated drive generator system of claim 1, including exciter means surrounding and arranged coaxially of the drive input shaft means.
Claim 11
Dependent Claim
29 words
The integrated drive generator system of claim 1 wherein said differential means include a planetary gearset having outer, rotary ring gear means coupled to the rotor of the generator.
Claim 12
Dependent Claim
34 words
The integrated drive generator system of claim 10, including exciter means having a rotor, the rotor of the exciter means being connected to said rotary ring gear means coaxially of the input shaft means.
Claim 13
Dependent Claim
89 words
An integrated drive generator system, comprising a housing mounting drive input shaft means, mechanical differential means coupled to and arranged coaxially about the drive input shaft means, generator means coupled to the mechanical differential means on one axial side of the differential means and including a rotor coaxially of the input drive shaft means, and a hydraulic log means coupled to the differential means on an opposite axial side of the differential means and including a hydraulic pump and motor assembly arranged coaxially of the input drive shaft means.
Claim 14
Dependent Claim
89 words
An integrated drive generator system, comprising a housing mounting drive input shaft means, mechanical differential means coupled to and arranged coaxially about the drive input shaft means, generator means coupled to the mechanical differential means on one axial side of the differential means and including a rotor coaxially of the input drive shaft means, and a hydraulic log means coupled to the differential means on an opposite axial side of the differential means and including a hydraulic pump and motor assembly arranged coaxially of the input drive shaft means.
Claim 15
Dependent Claim
25 words
The integrated drive generator system of claim 12 wherein said input shaft means extend through the differential means for connection to the hydraulic log means.
Claim 16
Dependent Claim
31 words
The integrated drive generator system of claim 13 wherein said differential means include rotary sleeve means about the input shaft means, the rotary sleeve means being connected to the generator rotor.
Claim 17
Dependent Claim
33 words
The integrated drive generator system of claim 14 wherein said differential means include a planetary gearset, and said rotary sleeve means is defined in part by a ring gear of the planetary gearset.
Claim 18
Dependent Claim
34 words
The integrated drive generator system of claim 12 wherein said housing surrounds the generator means in close proximity to the periphery thereof, and including cooling passage means integral with the housing about the generator.
Claim 19
Dependent Claim
36 words
The integrated drive generator system of claim 16 wherein said generator means include a stator about the rotor, with said integral cooling passage means being disposed in an interior wall of the housing surrounding the stator.
Claim 20
Dependent Claim
21 words
The integrated drive generator system of claim 12, including exciter means surrounding and arranged coaxially of the drive input shaft means.
Claim 21
Dependent Claim
29 words
The integrated drive generator system of claim 12 wherein said differential means include a planetary gearset having outer, rotary ring gear means coupled to the rotor of the generator.
Claim 22
Dependent Claim
34 words
The integrated drive generator system of claim 19, including exciter means having a rotor, the rotor of the exciter means being connected to said rotary ring gear means coaxially of the input shaft means.
Claim 23
Dependent Claim
46 words
An integrated drive generator system comprising a housing mounting drive input shaft means, and including differential means, generator means and hydraulic log means, each of the differential means, generator means and hydraulic log means being mounted within the housing coaxially of the drive input shaft means.
Claim 24
Dependent Claim
46 words
An integrated drive generator system comprising a housing mounting drive input shaft means, and including differential means, generator means and hydraulic log means, each of the differential means, generator means and hydraulic log means being mounted within the housing coaxially of the drive input shaft means.
Claim 25
Dependent Claim
21 words
The integrated drive generator system of claim 21, including exciter means surrounding and arranged coaxially of the drive input shaft means.
Claim 26
Dependent Claim
29 words
The integrated drive generator system of claim 21 wherein said differential means include a planetary gearset having outer, rotary ring gear means coupled to the rotor of the generator.
Claim 27
Dependent Claim
34 words
The integrated drive generator system of claim 23, including exciter means having a rotor, the rotor of the exciter means being connected to said rotary ring gear means coaxially of the input shaft means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |