US4118997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bevel gearing
Assignee: Rolls Royce PLC
•
Filing: 1977-08-15
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Granted: 1978-10-10
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Expires: 1997-08-15
Abstract
Abstract A bevel gear assembly for transmitting high horsepowers between a first shaft and a second shaft the axis of which lies at an angle to the first shaft includes a main bevel gear mounted on the first shaft and having two circumferential rows of teeth. The teeth face axially in opposite directions and a pair of secondary bevels are provided meshing respectively with the two rows of teeth. The secondary bevels are coupled to drive the second shaft.
Inventors
- 👤 Clifford Stanley Woodward
- 👤 David Roberts McMurtry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:05
CPC Classifications
F; F01; F01D; F01D15/00; F01D15/12; F02; F02C; F02C7/00; F02C7/32; F02C7/36; F02K; F02K3/00; F02K3/02; F02K3/04; F02K3/06; F16; F16H; F16H1/00; F16H1/02; F16H1/20; F16H1/22; F16H1/222; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19051; Y10T74/19056; Y10T74/19074; Y10T74/19079; Y10T74/19088; Y10T74/19642; Y10T74/1966; Y10T74/19665
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
A bevel gearing assembly comprising a first shaft, a main bevel gear connected to the first shaft and having two circumferentially extending rows of teeth facing in opposite axial directions, and two secondary bevel gears meshing respectively with the two rows of teeth on the main bevel gear, the two secondary bevel gears being coupled to drive a second shaft the axis of which lies at an angle to the axis of the first shaft.
Claim 2
Dependent Claim
75 words
A bevel gearing assembly comprising a first shaft, a main bevel gear connected to the first shaft and having two circumferentially extending rows of teeth facing in opposite axial directions, and two secondary bevel gears meshing respectively with the two rows of teeth on the main bevel gear, the two secondary bevel gears being coupled to drive a second shaft the axis of which lies at an angle to the axis of the first shaft.
Claim 3
Dependent Claim
48 words
A bevel gearing assembly as claimed in claim 1 and in which the main bevel gear has a circumferential row of teeth on both of its opposite sides and the secondary bevel gears are mounted one on each side of the main bevel to mesh with said teeth.
Claim 4
Dependent Claim
47 words
A bevel gearing assembly as claimed in claim 2 and in which one of the secondary bevel gears is mounted on the second shaft and the second bevel gear is connected to drive a spur gear which meshes with a spur gear mounted on said second shaft.
Claim 5
Dependent Claim
53 words
A bevel gearing assembly as claimed in claim 1 and in which the main bevel has two axially spaced flanges each having a circumferential row of teeth facing the other flange, and the secondary bevels are mounted in between the flanges so as to mesh respectively with one of the rows of teeth.
Claim 6
Dependent Claim
33 words
A bevel gearing assembly as claimed in claim 4 and in which the two secondary bevels mesh with each other and the second shaft lies at an acute angle to the first shaft.
Claim 7
Dependent Claim
37 words
A bevel gearing assembly as claimed in claim 4 and in which the two secondary bevels mesh with an intermediate idler gear and the second shaft lies at right angles to the axis of the first shaft.
References Cited (Backward Citations)
US3374687A
Cited
US3959850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |