Patent US3897699A successfully refreshed from Google Patents.
US3897699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Change gear transmission in group construction, especially for motor vehicles in agriculture and construction
Assignee: Kloeckner Humboldt Deutz AG
•
Filing: 1973-09-10
•
Granted: 1975-08-05
•
Expires: 1993-09-10
Abstract
Abstract A change gear transmission, especially for an agricultural or construction vehicle having an engine. The transmission has a geared first unit having a drive shaft driven by the engine and geared to a countershaft by gear pairs that provide a plurality of velocity ranges for the countershaft. The transmission has a geared second unit with two input shafts and an output shaft. The input shafts are geared to the countershaft to be driven at a plurality of velocity ranges and at least one input shaft is reversible. Gearing connects the input shafts to the output shaft for driving the output shaft at a plurality of velocity ranges in each direction. The transmission may have one or more power takeoff shafts. Couplings and clutches are provided for making the paths for power flow to the output shaft selectively effective and controls are provided for actuating the couplings and clutches in the proper combinations.
Inventors
- 👤 Manfred Hoyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:29
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/087; F16H3/093; F16H37/00; F16H37/02; F16H37/04; F16H37/042; F16H37/043; F16H3/006; F16H2003/007; F16H2003/0803; F16H2003/0933; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19167; Y10T74/19219; Y10T74/19377; Y10T74/19386; Y10T74/19405
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
268 words
A gear change and reversing transmission in group construction including a main shifting group with several forward shifting steps following a group drive and driven selectively directing in forward driving direction at diverging stepped-up and steppeddown ratios, especially for agricultural and construction vehicles and comprising: a main geared unit having drive shaft means adapted for being driven by a prime mover and having a countershaft (18) parallel to the drive shaft means, a second geared unit having a first input shaft (29) and a second input shaft (55) and an output shaft (38) all parallel to said drive shaft means, first meshing gears on said drive shaft means and countershaft (14, 19; 15, 20; 16, 21; 17, 22) and adapted to be made selectively effective to drive said countershaft, second gears (26, 27) adapted to be selectively coupled to said first input shaft (29) and meshing with gears (20, 22) on said countershaft, a third gear (60) rotatable on said second input shaft and meshing with a gear (21) on said countershaft, a fourth rotatable gear (56) meshing with a gear (22) on said countershaft, a fifth gear (57) rotatable on said second input shaft and meshing with said fourth gear, means (61, 62) for selectively coupling said third (60) and fifth (57) gears to said second iNput shaft, an eighth gear (39) adapted for selective coupling to said output shaft (38), a sixth gear (37) fixed to said first input shaft (29) and meshing with said eighth gear, and a seventh gear (37'') fixed to said second input shaft (55) and also meshing with said eighth gear.
Claim 2
Dependent Claim
268 words
A gear change and reversing transmission in group construction including a main shifting group with several forward shifting steps following a group drive and driven selectively directing in forward driving direction at diverging stepped-up and steppeddown ratios, especially for agricultural and construction vehicles and comprising: a main geared unit having drive shaft means adapted for being driven by a prime mover and having a countershaft (18) parallel to the drive shaft means, a second geared unit having a first input shaft (29) and a second input shaft (55) and an output shaft (38) all parallel to said drive shaft means, first meshing gears on said drive shaft means and countershaft (14, 19; 15, 20; 16, 21; 17, 22) and adapted to be made selectively effective to drive said countershaft, second gears (26, 27) adapted to be selectively coupled to said first input shaft (29) and meshing with gears (20, 22) on said countershaft, a third gear (60) rotatable on said second input shaft and meshing with a gear (21) on said countershaft, a fourth rotatable gear (56) meshing with a gear (22) on said countershaft, a fifth gear (57) rotatable on said second input shaft and meshing with said fourth gear, means (61, 62) for selectively coupling said third (60) and fifth (57) gears to said second iNput shaft, an eighth gear (39) adapted for selective coupling to said output shaft (38), a sixth gear (37) fixed to said first input shaft (29) and meshing with said eighth gear, and a seventh gear (37'') fixed to said second input shaft (55) and also meshing with said eighth gear.
Claim 3
Dependent Claim
49 words
A gear change and reversing transmission according to claim 1 in which said drive shaft means (4) drives said countershaft (18) in one direction, said countershaft being adapted selectively for driving separately said first input shaft (29) in one direction and the second input shaft (55) in opposite directions.
Claim 4
Dependent Claim
41 words
A gear change and reversing transmission according to claim 1 in which said fourth (56) and fifth (57) gears drive said second input shaft (55) in reverse direction when said fifth gear (57) is coupled to said second input shaft (55).
Claim 5
Dependent Claim
54 words
A gear change and reversing transmission according to claim 1 in which said second gears (26, 27) on said firth input shaft (29) are of respective sizes and mesh with corresponding gears (20, 22) on said countershaft (18) for the selective driving of said first input shaft (29) at either of two velocity ranges.
Claim 6
Dependent Claim
36 words
A gear change and reversing transmission according to claim 4 in which the gear (22) on said countershaft which meshes with the larger one of said second gears (27) also meshes with said fourth gear (56).
Claim 7
Dependent Claim
59 words
A gear change and reversing transmission according to claim 5 in which the gear (21) on said countershaft which meshes with said third gear (60) rotatable on said second input shaft (55) is disposed axially between the gears (20, 22) on said countershaft (18) which mesh with the said second gears (26, 27) on said first input shaft (29).
Claim 8
Dependent Claim
79 words
A gear change and reversing transmission according to claim 1 in which said first gears (14, 19; 15, 20; 16, 21; 17, 22) on said drive shaft means and said countershaft provide for four velocity ranges of said countershaft (18), the gear (21) on the countershaft meshing with said third gear (60) on said second input shaft being that one of said first gears on the countershaft which forms the next to the highest velocity range for the countershaft.
Claim 9
Dependent Claim
40 words
A gear change and reversing transmission according to claim 1 in which each of the gears (20, 21, 22) on said countershaft meshing with said second (26, 27), third (60), and fourth (56) gears is one of said first gears.
Claim 10
Dependent Claim
131 words
A gear change and reversing transmission according to claim 1 in which each of said first gears (29, 20, 21, 22) on said countershaft is fixed thereto, a first hollow shaft (25) rotatable on said first input shaft (29), said second gears (26, 27) being rotatable on said first hollow shaft (25) and first coupling means (28) for selectively coupling said second gears to said first hollow shaft, a second hollow shaft (58) rotatable on said second input shaft and rotatably supporting said third (60) and fifth (57) gears, second coupling means (62) for selectively coupling said third and fifth gears to said second hollow shaft, and first and second friction clutch means (34, 61) for selectively coupling said first and second hollow shafts to said first and second input shafts.
Claim 11
Dependent Claim
27 words
A gear change and reversing transmission according to claim 9 in which each friction clutch (34, 61) is hydraulically engageable and each friction clutch is spring disengageable.
Claim 12
Dependent Claim
69 words
A gear change and reversing transmission according to claim 1 in which said second input shaft (55) includes a ninth gear (65) fixed thereto and larger than said seventh gear (37''), a tenth gear (66) rotatable on said output shaft (38) and meshing with said ninth gear, and means (41) for selectively coupling said tenth gear to said output shaft while uncoupling said eighth gear from said output shaft.
Claim 13
Dependent Claim
89 words
A gear change and reversing transmission according to claim 11 in which said eighth gear (39) has an eleventh and smaller gear (40) fixed thereto, a third hollow shaft (44), a twelfth gear (42) fixed to the hollow shaft and meshing with saId eleventh gear, a thirteenth gear (48) fixed to said third hollow shaft and smaller than said twelfth gear, a fourteenth gear (50) rotatable on said output shaft and meshing with said thirteenth gear, and means (52) for selectively coupling said fourteenth gear to said output shaft.
Claim 14
Dependent Claim
24 words
A gear change and reversing transmission according to claim 12 in which said third hollow shaft (44) is coaxial with said drive shaft (4).
Claim 15
Dependent Claim
64 words
A gear change and reversing transmission according to claim 12 which includes a further gear (49) fixed to said third hollow shaft (44) and smaller than said thirteenth gear (48), another gear (51) rotatable on said output shaft and meshing with said further gear (49), and means for selectively coupling said other gear (51) and said fourteenth gear (50) to said output shaft (38).
Claim 16
Dependent Claim
32 words
A gear change and reversing transmission according to claimm14 in which said tenth gear (66) is disposed on said output shaft axially between said eighth gear (39) and said fourteenth gear (50).
Claim 17
Dependent Claim
33 words
A gear change and reversing transmission according to claim 14 which includes a single coupling element (41) between said eighth (39) and tenth (66) gears for selective coupling thereof to said output shaft.
Claim 18
Dependent Claim
70 words
A gear change and reversing transmission according to claim 14 which includes a first coupling element 41 between said eighth (39) and tenth (66) gears for selective coupling thereof to said output shaft (38) and a second coupling element (52) between said fourteenth (50) and said other gear (51) for selective coupling thereof to said output shaft (38), and a single control element for said first and second coupling elements.
Claim 19
Dependent Claim
37 words
A gear change and reversing transmission according to claim 1 in which said first (29) and second (55) input shafts and said drive shaft means (4) are disposed on a common circle relative to said countershaft (18).
Claim 20
Dependent Claim
28 words
A gear change and reversing transmission according to claim 18 in which the axis of rotation of said fourth gear (56) is arranged on the same said circle.
Claim 21
Dependent Claim
22 words
A gear change and reversing transmission according to claim 18 in which said output shaft (38) is coaxial with said countershaft (18).
Claim 22
Dependent Claim
109 words
A gear change and reversing transmission according to claim 1 in which said drive shaft means (4) includes an inner shaft (46) having a one way drive connection (45) with the prime mover, drive gear means (72, 73) rotatable on said inner shaft, take-off shaft means (68) having driven gear means (78) for driving said take-off shaft means, idler gear means (74, 77) rotatable on said output shaft and meshing with said drive and driven gear means, means (81, 83, 84) for coupling said driven gear means (78) to said take-off shaft means, and means (67) for selectively coupling said drive gear means (72, 73) to said inner shaft.
Claim 23
Dependent Claim
32 words
A gear change and reversing transmission according to claim 21 in which said take-off shaft means (68) is on the same circle relative to said countershaft (18) as said inner shaft (46).
Claim 24
Dependent Claim
28 words
A gear change and reversing transmission according to claim 21 in which said gear means (72, 73; 78; 83, 84) form multi-velocity ranges for said take-off shaft means.
Claim 25
Dependent Claim
45 words
A gear change and reversing transmission according to claim 21 in which said drive gear means include two gears (72, 73) rotatable on said inner shaft (46), and a control member (67) unrotatable on said inner shaft and selectively engageable with said drive gear means.
Claim 26
Dependent Claim
45 words
A gear change and reversing transmission according to claim 24 in which said driven gear means includes at least one gear (78) rotatable relative to said take-off shaft means and a friction clutch (81) for selectively coupling said one gear to said take-off shaft means.
Claim 27
Dependent Claim
73 words
A gear change and reversing transmission according to claim 24 which includes a larger gear (84) fixed to said take-off shaft means (68), a smaller gear (83) meshing with the larger gear, a first clutch element (82) fixed to the smaller gear, a second clutch element (79) cooperatiNg with the first clutch element, and said driven gear means (78) being fixed to said second clutch element and driven by said idler gear means.
Claim 28
Dependent Claim
40 words
A gear change and reversing transmission according to claim 26 which includes an intermediate shaft (80) fixed to said smaller gear (83) and first clutch element (82) and rotatably supporting said driven gear means (78) and second clutch element (79).
Claim 29
Dependent Claim
36 words
A gear change and reversing transmission according to claim 27 which includes a second shaft (85) coaxial with said take-off shaft means (68) and gearing (87, 88) connecting said second shaft to said output shaft (38).
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |