Patent EP0061845A2 successfully refreshed from Google Patents.
EP0061845A2
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EP
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Rotary transmission
Assignee: Whitnash PLC
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Filing: 1982-03-04
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Granted: —
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Expires: 2002-03-04
Abstract
Abstract The transmission comprises gear trains each being one of a set providing a series of increasing speed ratios and two clutches (12, 13) independently operable and providing alternative drive paths through the gear trains between a common input shaft (11) and a common output shaft (14). The gear trains of alternate ratios in the set are driven respectively through one and the other clutch. One clutch (13) is arranged to drive the output shaft (14) through a first four wheel gear train or through a second four wheel gear train, the gear trains having common first and second gear wheels (21, 22 and 23, 24 or 21, 22 and 23, 30). The other clutch (12) is arranged to drive the output shaft (14) either directly or through a third four wheel gear train which includes gear wheels which are members of at least one of the first and second mentioned four wheel gear trains. The second and third gear wheels of each respective four wheel train are coaxial about a layshaft (15) and one of the gear wheels (24; 30) on the layshaft (15) is journalled for rotation thereon and is selectively drivably connectable to the layshaft.
Inventors
- 👤 John Puis Burke
- 👤 Alastair John Young
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:04
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/087; F16H3/093; F16H3/097; F16H3/006; F16H3/091; F16H3/0915; F16H2003/0803; F16H2003/0807; F16H2003/0933; F16H2200/00; F16H2200/003; F16H2200/0043; F16H2200/0052
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
200 words
A rotary transmission having gear trains each being one of a set providing a series of increasing speed ratios and two clutches (12, 13) independently operable and providing alternative drive paths through the gear trains between a common input shaft (11) and a common output shaft (14), the gear trains of alternate ratios in the set being driven respectively through one and the other clutch, one clutch (1.3) being arranged to drive the output shaft (14) through a first four wheel gear train or through a second four wheel gear train, the gear trains having common first and second gear wheels (21, 22 and 23, 24 or 21, 22 and 23, 30), the other clutch (12) being arranged to drive the output shaft (14) either directly or through a third four wheel gear train which includes wheels which are members of at least one of the first and second mentioned four wheel gear trains the second and third gear wheels of each respective four wheel train being co- axial about a layshaft (15), characterised in that one of the gear wheels (24; 30) on the layshaft (15) is journalled for rotation thereon and is selectively drivably connectable to the layshaft.
Claim 2
Dependent Claim
200 words
A rotary transmission having gear trains each being one of a set providing a series of increasing speed ratios and two clutches (12, 13) independently operable and providing alternative drive paths through the gear trains between a common input shaft (11) and a common output shaft (14), the gear trains of alternate ratios in the set being driven respectively through one and the other clutch, one clutch (1.3) being arranged to drive the output shaft (14) through a first four wheel gear train or through a second four wheel gear train, the gear trains having common first and second gear wheels (21, 22 and 23, 24 or 21, 22 and 23, 30), the other clutch (12) being arranged to drive the output shaft (14) either directly or through a third four wheel gear train which includes wheels which are members of at least one of the first and second mentioned four wheel gear trains the second and third gear wheels of each respective four wheel train being co- axial about a layshaft (15), characterised in that one of the gear wheels (24; 30) on the layshaft (15) is journalled for rotation thereon and is selectively drivably connectable to the layshaft.
Claim 3
Dependent Claim
27 words
A transmission according to claim 1, characterised in that the gear wheel (24) jounalled on the layshaft (15) is the second wheel of said third gear train.
Claim 4
Dependent Claim
59 words
A transmission according to claim 1 or 2, charactersied in that the second gear wheel (22) of the first gear train (A) and the third gear wheel (25) of the third gear train (C) are fast for rotation with the layshaft with a space between them and the gear wheel (24) is journatted on the layshaft in the space.
Claim 5
Dependent Claim
78 words
A transmission according to claim 1, 2 or 3 characterised in that fourth gear wheel (26) of said first four wheel gear train (A,C) is journalled for rotation on the common output shaft (14) and is selectively drivably connectable to the output shaft by selector means (18), and a further selector means (17) operable independently of the first said selector means is provided for selectively drivably connecting the said other clutch (12) directly to the output shaft (14).
Claim 6
Dependent Claim
73 words
A transmission according to claim 1,characterised in that a fourth gear train (D) is provided between said layshaft (15) and said output shaft (14) and selectively connectable to drive therebetween, the third gear wheel (27) of said third gear train (B , C) being journalled on the layshaft (15) and selectively connectable to said layshaft such that six alternative speed ratios are provided between said input and output shafts (11 and 14) .
Claim 7
Dependent Claim
35 words
A transmission according to claim 6, characterised in that said fourth gear train comprises one gear wheel (28) fast for rotation with the layshaft and a second gear wheel (29) journalled on the output shaft.
Claim 8
Dependent Claim
49 words
A transmission according to claim 6, characterised in that the third gear wheel (27) of said third gear train (B, C) is connectable to the second gear wheel (24) of the third gear train (B) and to said one gear wheel (28) of the fourth gear train (D) .
Claim 9
Dependent Claim
113 words
A transmission according to claim 6 or 7 characterised in that the fourth gear wheel (26) of said first gear train (A, C) is journalled for rotation on the common output shaft (14) and is selectively drivably connected to the output shaft by first selector means 18, a second selector means (17) operable independently of the first said selector means is provided for selectively drivably connecting said other clutch (12) directly to the output shaft (14) and a third selector means (19) operable independently of the first and second selector means is provided for selectively drivably connecting said second gear wheel 29 of the fourth gear train (D) to the output shaft (14).
Claim 10
Dependent Claim
47 words
A transmission according to claim 1 characterised in that the gear wheel (30) journal led on the layshaft is coaxial with a further gear wheel (32), the two gear wheels (30,32) being rotatably fast with a common hub (130) which is journal I ed on the layshaft.
Claim 11
Dependent Claim
87 words
1 0. A transmission according to claim 9 characterised in that the output shaft (14) carries selector means (31) which is operable either to drivably connect a gear wheel (34) journalled on the output shaft to the output shaft to form a fourth gear wheel in a train (G, H) for transmitting drive from the other clutch (12) to the output shaft through the gears (30, 32) on the common hub (130) or to connect the said other clutch (12) di rectly to the output shaft (14).
References Cited (Backward Citations)
No citation records indexed.
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