EP0001348A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Gear transmissions
Assignee: Vickers Shipbuilding Group Ltd
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Filing: 1978-09-18
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Granted: —
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Expires: 1998-09-18
Abstract
Abstract The invention relates to high power gear transmissions such as may be used in marine applications. The gear transmission is reversible and utilises an epicyclic construction involving sun, planet and annulus gears and including a first coupling (9, 10) which in an engaged condition makes the innulus gear support member (5) rotationally fast with the input shaft (1), and a second coupling (13, 14) which in an engaged condition locks the planet gear carrier (12) against rotation. The transmission has two operative conditions, a first in which the first coupling is engaged and the second coupling disengaged, and a second in which the second coupling is engaged and the first coupling disengaged so that for a single direction of rotation of the input shaft the output shaft can be rotated in either direction. I
Inventors
- 👤 John Calverley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 20:27
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/02; B63H23/08; F; F16; F16H; F16H3/00; F16H3/44; F16H3/46; F16H3/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
201 words
A gear transmission comprising an input shaft (1, 1A, 101), an epicyclic gear arrangement having its sun pinion (2, 102) fast for rotation with said input shaft, a plurality of planet gears (3, 103) mounted on a planet carrier (12, 112) and an output shaft (8, 108) coupled for rotation in dependence upon rotation of a member (5, 105) that supports the annulus gear (4, 104) of the epicyclic gear arrangement, characterised in that a first coupling (9, 10; 109, 110) in an engaged condition thereof makes said annulus gear support member rotationally fast with said input shaft, and a second coupling ( : 13, 14; 113, 114) in an engaged condition thereof locks the planet carrier. of the epicyclic gear arrangement against rotation, the gear transmission having a first operative condition in which said first coupling is engaged and said second coupling is disengaged, and a second operative condition in which said first coupling is disengaged and said second coupling is engaged, whereby for a single direction of rotation of said input shaft, said output shaft is rotated in one direction in said first operative condition of the gear transmission and in the reverse direction in said second operative condition.
Claim 2
Dependent Claim
201 words
A gear transmission comprising an input shaft (1, 1A, 101), an epicyclic gear arrangement having its sun pinion (2, 102) fast for rotation with said input shaft, a plurality of planet gears (3, 103) mounted on a planet carrier (12, 112) and an output shaft (8, 108) coupled for rotation in dependence upon rotation of a member (5, 105) that supports the annulus gear (4, 104) of the epicyclic gear arrangement, characterised in that a first coupling (9, 10; 109, 110) in an engaged condition thereof makes said annulus gear support member rotationally fast with said input shaft, and a second coupling ( : 13, 14; 113, 114) in an engaged condition thereof locks the planet carrier. of the epicyclic gear arrangement against rotation, the gear transmission having a first operative condition in which said first coupling is engaged and said second coupling is disengaged, and a second operative condition in which said first coupling is disengaged and said second coupling is engaged, whereby for a single direction of rotation of said input shaft, said output shaft is rotated in one direction in said first operative condition of the gear transmission and in the reverse direction in said second operative condition.
Claim 3
Dependent Claim
72 words
A gear transmission as claimed in claim 1, characterised in that the first coupling comprises a clutch (9, 10; 109, 110) and the second coupling comprises a brake (13, 14; 113, 114), the clutch being engageable with the annulus gear support member (5, 105) to make the support member rotationally fast with the input shaft and the brake being engageable with the output shaft for braking the rotation of the output shaft.
Claim 4
Dependent Claim
40 words
A gear transmission as claimed in claim 1 or 2, characterised in that the output shaft is parallel with the input shaft, a reduction gear arrangement (6, 7) being interposed between the annulus gear support member and the output shaft.
Claim 5
Dependent Claim
28 words
. 4. A gear transmission as claimed in claim 3, characterised in that the transmission includes a further reduction gear between the input shaft and the sun pinion.
Claim 6
Dependent Claim
22 words
A gear transmission as claimed in claim 1 or 2, characterised in that the output shaft and the input shaft are coaxial.
Claim 7
Dependent Claim
32 words
A gear transmission as claimed in claim 5, characterised in that the transmission includes a reduction gear between the output shaft and a further output shaft parallel to the first-mentioned output shaft.
Claim 8
Dependent Claim
34 words
A gear transmission as claimed in claim 5 or 6, characterised in that the transmission includes a reduction gear between the input shaft and a further input shaft parallel to the first-mentioned input shaft.
Claim 9
Dependent Claim
29 words
A gear transmission as claimed in any preceding claim, characterised in that each of the planet gears is mounted on the planet carrier by way of a resilient spindle.
References Cited (Backward Citations)
DE343651C
Cited
DE328862C
Cited
FR905503A
Cited
US2672769A
Cited
DE1213688B
Cited
GB1004910A
Cited
GB989161A
Cited
GB1101131A
Cited
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