Patent US3602068A successfully refreshed from Google Patents.
US3602068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split-power transmission
Assignee: RTX Corp
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Filing: 1970-04-27
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Granted: 1971-08-31
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Expires: 1990-04-27
Abstract
Abstract A split-power transmission in which a high-speed engine drives a substantially lower speed drive shaft, such as a helicopter rotor drive shaft, through a counterrotating epicyclic gear unit in which the oppositely rotating planet carrier and ring gear are drivingly connected to opposite sides of the drive shaft to provide substantially equal load, split power paths thereto and, preferably, wherein a second such transmission connects a second engine to the drive shaft so that there are four substantially equal load equally spaced drive gear connections to the drive shaft.
Inventors
- 👤 Graham White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:01
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/36; F16; F16H; F16H37/00; F16H2700/00; F16H2700/02; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19014; Y10T74/19023; Y10T74/19074; Y10T74/19112; Y10T74/19116; Y10T74/19126; Y10T74/19628
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
110 words
A transmission adapted for driving by connecting a high-speed engine to a drive shaft including: A. an epicyclic unit having: 1. a sun gear adapted to be connected to and driven by the engine, 2. a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier, 3. a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions, B. first drive means connecting said ring gear to said drive shaft and, C. second drive means connecting said planet carrier to said drive shaft.
Claim 2
Dependent Claim
110 words
A transmission adapted for driving by connecting a high-speed engine to a drive shaft including: A. an epicyclic unit having: 1. a sun gear adapted to be connected to and driven by the engine, 2. a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier, 3. a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions, B. first drive means connecting said ring gear to said drive shaft and, C. second drive means connecting said planet carrier to said drive shaft.
Claim 3
Dependent Claim
24 words
a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier,
Claim 4
Dependent Claim
24 words
a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier,
Claim 5
Dependent Claim
16 words
Apparatus according to claim 1 and including a freewheeling unit located in said second drive means.
Claim 6
Dependent Claim
24 words
a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier,
Claim 7
Dependent Claim
24 words
a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier,
Claim 8
Dependent Claim
11 words
a combining gear connected to said drive shaft in driving relation,
Claim 9
Dependent Claim
11 words
a combining gear connected to said drive shaft in driving relation,
Claim 10
Dependent Claim
11 words
a combining gear connected to said drive shaft in driving relation,
Claim 11
Dependent Claim
11 words
a combining gear connected to said drive shaft in driving relation,
Claim 12
Dependent Claim
12 words
first drive means connecting said ring gear to said drive shaft and,
Claim 13
Dependent Claim
12 words
first drive means connecting said ring gear to said drive shaft and,
Claim 14
Dependent Claim
12 words
first drive means connecting said ring gear to said drive shaft and,
Claim 15
Dependent Claim
12 words
first drive means connecting said ring gear to said drive shaft and,
Claim 16
Dependent Claim
13 words
means connecting said bevel gear to said ring gear to be driven thereby,
Claim 17
Dependent Claim
13 words
means connecting said bevel gear to said ring gear to be driven thereby,
Claim 18
Dependent Claim
67 words
a drive shaft mounted for rotation about a substantially vertical axis and including: a. a bevel gear mating with said bevel gear and, b. a spur gear mating with said combining gear so that rotation of said planet carrier causes rotation of said bevel gear, said drive shaft and said combining gear, D. a second drive train connecting said ring gear to said combining gear and including:
Claim 19
Dependent Claim
67 words
a drive shaft mounted for rotation about a substantially vertical axis and including: a. a bevel gear mating with said bevel gear and, b. a spur gear mating with said combining gear so that rotation of said planet carrier causes rotation of said bevel gear, said drive shaft and said combining gear, D. a second drive train connecting said ring gear to said combining gear and including:
Claim 20
Dependent Claim
13 words
a plurality of planet gears meshing with and driven by said sun gear,
Claim 21
Dependent Claim
13 words
a plurality of planet gears meshing with and driven by said sun gear,
Claim 22
Dependent Claim
76 words
a bevel gear with teeth forming an angle to said axis and, B. a mating spur gear connecting each of said spur gears of said first and second drive means drive shafts to said drive shaft and, C. a bevel gear in mating relationship with the bevel gear in the drive means drive shaft thereof so as to connect said first and second drive means drive shafts to said ring gear and said planet carrier, respectively.
Claim 23
Dependent Claim
76 words
a bevel gear with teeth forming an angle to said axis and, B. a mating spur gear connecting each of said spur gears of said first and second drive means drive shafts to said drive shaft and, C. a bevel gear in mating relationship with the bevel gear in the drive means drive shaft thereof so as to connect said first and second drive means drive shafts to said ring gear and said planet carrier, respectively.
Claim 24
Dependent Claim
112 words
a drive shaft mounted for rotation about a substantially vertical axis and including: a. a bevel gear matingly engaging said bevel gear of said second drive train and, b. a spur gear connected to said combining gear of said drive shaft at a station substantially diametrically opposed from the location of the spur gear of the first drive train on said combining gear so that rotation of said ring gear will cause rotation of said bevel gear and said drive shaft of said second drive train so as to drive said combining gear and hence said drive shaft in the same direction as it is being driven by said first drive train.
Claim 25
Dependent Claim
112 words
a drive shaft mounted for rotation about a substantially vertical axis and including: a. a bevel gear matingly engaging said bevel gear of said second drive train and, b. a spur gear connected to said combining gear of said drive shaft at a station substantially diametrically opposed from the location of the spur gear of the first drive train on said combining gear so that rotation of said ring gear will cause rotation of said bevel gear and said drive shaft of said second drive train so as to drive said combining gear and hence said drive shaft in the same direction as it is being driven by said first drive train.
Claim 26
Dependent Claim
29 words
a planet carrier supporting each of said planet gears in equal circumferential relationship about said sun gear and adapted to rotate with said planet gears about said sun gears,
Claim 27
Dependent Claim
29 words
a planet carrier supporting each of said planet gears in equal circumferential relationship about said sun gear and adapted to rotate with said planet gears about said sun gears,
Claim 28
Dependent Claim
28 words
second drive means connecting said planet carrier to said drive shaft, B. a second transmission adapted to connect a second high-speed engine to the drive shaft and including:
Claim 29
Dependent Claim
28 words
second drive means connecting said planet carrier to said drive shaft, B. a second transmission adapted to connect a second high-speed engine to the drive shaft and including:
Claim 30
Dependent Claim
47 words
second drive means connecting said planet carrier to said drive shaft, C. a combining gear operatively connected to said drive shaft and wherein said first and second drive means of said first and second transmissions operatively engage said combining gear at substantially equally spaced circumferential stations thereabout.
Claim 31
Dependent Claim
47 words
second drive means connecting said planet carrier to said drive shaft, C. a combining gear operatively connected to said drive shaft and wherein said first and second drive means of said first and second transmissions operatively engage said combining gear at substantially equally spaced circumferential stations thereabout.
Claim 32
Dependent Claim
94 words
a first drive train connecting said planet carrier to said combining gear and including: a. a bevel gear mounted for rotation about a substantially horizontal axis and connected to said planet carrier to be driven thereby, b. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear mating with said bevel gear and, ii. a spur gear mating with said combining gear at a first station thereon so that rotation of said planet carrier causes rotation of said bevel gear, said drive shaft and said combining gear,
Claim 33
Dependent Claim
94 words
a first drive train connecting said planet carrier to said combining gear and including: a. a bevel gear mounted for rotation about a substantially horizontal axis and connected to said planet carrier to be driven thereby, b. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear mating with said bevel gear and, ii. a spur gear mating with said combining gear at a first station thereon so that rotation of said planet carrier causes rotation of said bevel gear, said drive shaft and said combining gear,
Claim 34
Dependent Claim
17 words
Apparatus according to claim 1 and including a freewheeling unit located in one of said drive means.
Claim 35
Dependent Claim
50 words
a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions, B. first drive means connecting said ring gear to said drive shaft and, C. second drive means connecting said planet carrier to said drive shaft.
Claim 36
Dependent Claim
50 words
a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions, B. first drive means connecting said ring gear to said drive shaft and, C. second drive means connecting said planet carrier to said drive shaft.
Claim 37
Dependent Claim
50 words
a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions, B. first drive means connecting said ring gear to said drive shaft and, C. second drive means connecting said planet carrier to said drive shaft.
Claim 38
Dependent Claim
50 words
a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions, B. first drive means connecting said ring gear to said drive shaft and, C. second drive means connecting said planet carrier to said drive shaft.
Claim 39
Dependent Claim
95 words
a first drive train connecting said planet carrier to said combining gear and including: a. a bevel gear mounted for rotation for about a substantially horizontal axis and connected to said planet carrier to be driven thereby, b. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear mating with said bevel gear and, ii. a spur gear mating with said combining gear at a third station thereon so that rotation of said planet caRrier causes rotation of said bevel gear, said drive shaft and said combining gear,
Claim 40
Dependent Claim
95 words
a first drive train connecting said planet carrier to said combining gear and including: a. a bevel gear mounted for rotation for about a substantially horizontal axis and connected to said planet carrier to be driven thereby, b. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear mating with said bevel gear and, ii. a spur gear mating with said combining gear at a third station thereon so that rotation of said planet caRrier causes rotation of said bevel gear, said drive shaft and said combining gear,
Claim 41
Dependent Claim
175 words
a second drive train connecting said ring gear to said combining gear and including: a. a bevel gear mounted for rotation about a substantially horizontal axis, b. means connecting said bevel gear to said ring gear to be driven thereby, c. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear matingly engaging said bevel gear of said second drive train and, ii. a spur gear connected to said combining gear of said drive shaft at a fourth station thereon so that rotation of said ring gear will cause rotation of said bevel gear and said drive shaft of said second drive train so as to drive said combining gear and hence said drive shaft in the same direction as it is being driven by said first drive train and so that said first, second, third, and fourth stations are substantially equally positioned circumferentially about said combining gear and wherein said first and second drive trains of said first and second split-power systems carry about one-half engine load.
Claim 42
Dependent Claim
175 words
a second drive train connecting said ring gear to said combining gear and including: a. a bevel gear mounted for rotation about a substantially horizontal axis, b. means connecting said bevel gear to said ring gear to be driven thereby, c. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear matingly engaging said bevel gear of said second drive train and, ii. a spur gear connected to said combining gear of said drive shaft at a fourth station thereon so that rotation of said ring gear will cause rotation of said bevel gear and said drive shaft of said second drive train so as to drive said combining gear and hence said drive shaft in the same direction as it is being driven by said first drive train and so that said first, second, third, and fourth stations are substantially equally positioned circumferentially about said combining gear and wherein said first and second drive trains of said first and second split-power systems carry about one-half engine load.
Claim 43
Dependent Claim
22 words
Apparatus according to claim 1 wherein said first and second drive means drivingly connect to substantially opposite sides of said drive shaft.
Claim 44
Dependent Claim
170 words
a second drive train connecting said ring gear to said combining gear and including: a. a bevel gear mounted for rotation about a substantially horizontal axis, b. means connecting said bevel gear to said ring gear to be driven thereby, c. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear matingly engaging said bevel gear of said second drive train and, ii. a spur gear connected to said combining gear of said drive shaft at a second station thereon so that rotation of said ring gear will cause rotation of said bevel gear and said drive shaft of said second drive train so as to drive said combining gear and hence said drive shaft in the same direction as it is being driven by said first drive train, B. a second split power transmission system adapted to connect a second substantially horizontally oriented engine to said substantially vertically oriented drive shaft to be driven thereby at a substantially reduced rotary speed including:
Claim 45
Dependent Claim
170 words
a second drive train connecting said ring gear to said combining gear and including: a. a bevel gear mounted for rotation about a substantially horizontal axis, b. means connecting said bevel gear to said ring gear to be driven thereby, c. a drive shaft mounted for rotation about a substantially vertical axis and including: i. a bevel gear matingly engaging said bevel gear of said second drive train and, ii. a spur gear connected to said combining gear of said drive shaft at a second station thereon so that rotation of said ring gear will cause rotation of said bevel gear and said drive shaft of said second drive train so as to drive said combining gear and hence said drive shaft in the same direction as it is being driven by said first drive train, B. a second split power transmission system adapted to connect a second substantially horizontally oriented engine to said substantially vertically oriented drive shaft to be driven thereby at a substantially reduced rotary speed including:
Claim 46
Dependent Claim
63 words
a ring gear mounted for rotation about and in mating relation with said planet gears so that rotation of said sun gear will cause said planet carrier and said ring gear to rotate in opposite directions, B. a combining gear connected to said drive shaft in driving relation, C. a first drive train connecting said planet carrier to said combining gear and including:
Claim 47
Dependent Claim
63 words
a ring gear mounted for rotation about and in mating relation with said planet gears so that rotation of said sun gear will cause said planet carrier and said ring gear to rotate in opposite directions, B. a combining gear connected to said drive shaft in driving relation, C. a first drive train connecting said planet carrier to said combining gear and including:
Claim 48
Dependent Claim
28 words
Apparatus according to claim 1 and including a second transmission adapted to connect a second high-speed engine to the drive shaft and including: A. an epicyclic unit having:
Claim 49
Dependent Claim
36 words
Apparatus according to claim 1 wherein said drive shaft is mounted for rotation about an axis and wherein each of said drive means includes: A. a drive shaft mounted coaxially with said drive shaft and including:
Claim 50
Dependent Claim
45 words
A split-power transmission system adapted to connect a substantially horizontally oriented engine to a substantially vertically oriented drive shaft to be driven thereby at a substantially reduced rotary speed including: A. an epicyclic gear system mounted for rotation about a substantially horizontal axis and including:
Claim 51
Dependent Claim
45 words
A split-power transmission system adapted to connect a substantially horizontally oriented engine to a substantially vertically oriented drive shaft to be driven thereby at a substantially reduced rotary speed including: A. an epicyclic gear system mounted for rotation about a substantially horizontal axis and including:
Claim 52
Dependent Claim
17 words
Apparatus according to claim 7 and including a freewheeling unit located in one of said drive trains.
Claim 53
Dependent Claim
29 words
Apparatus according to claim 7 wherein the teeth of each of said gears are numbered and sized so that each of said drive trains carries substantially one-half engine power.
Claim 54
Dependent Claim
34 words
Apparatus according to claim 9 and wherein said gears of said epicyclic unit have selected numbers of gears so that a reduction ratio of about 10-to-1 occurs between said engine and said planet carrier.
Claim 55
Dependent Claim
100 words
A power system including: A. a first transmission adapted for driving by connecting a first high-speed engine to a drive shaft adapted to rotate at a relatively low speed including: 1.an epicyclic unit having: a. a sun gear adapted to be connected to and driven by the first engine, b. a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier, c. a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions,
Claim 56
Dependent Claim
100 words
A power system including: A. a first transmission adapted for driving by connecting a first high-speed engine to a drive shaft adapted to rotate at a relatively low speed including: 1.an epicyclic unit having: a. a sun gear adapted to be connected to and driven by the first engine, b. a plurality of planet gears surrounding said sun gear and in mating relation therewith and positioned relative to one another by a planet carrier, c. a movable ring gear mounted to be driven by said planetary gears such that said ring gear and said planet carrier rotate in opposite directions,
Claim 57
Dependent Claim
22 words
Apparatus according to claim 11 and including a freewheeling unit in one of said drive means in said first or second transmissions.
Claim 58
Dependent Claim
47 words
Apparatus according to claim 11 wherein said first and second engines are of equal power and wherein said first and second drive means of said first and second transmissions each carry substantially one-half engine power so that substantially equal power loading is imparted to said coMbining gears.
Claim 59
Dependent Claim
37 words
A drive mechanism including: A. a first split-power transmission system adapted to connect a first substantially horizontally oriented engine to a substantially vertically oriented drive shaft to be driven thereby at a substantially reduced rotary speed including:
Claim 60
Dependent Claim
37 words
A drive mechanism including: A. a first split-power transmission system adapted to connect a first substantially horizontally oriented engine to a substantially vertically oriented drive shaft to be driven thereby at a substantially reduced rotary speed including:
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |