Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A powershift transmission of the type including input and output drive means (12, 20), first and second shafts (26, 13) disposed between the drive means, and first and second power paths (36, 38) disposed between the drive means and alternately connectable between the drive means via the shafts, characterized in that it comprises: first means (42, 74) selectively operative to effect driving connections including the first shaft, either of the power paths, and one of the drive means; second means (42, 74) selectively operative to effect driving connections including the second shaft, either of the power paths, and said one drive means; and first and second frictions clutches (48, 82) for completing the driving connections effected by said first and second means, one of said friction clutches engagable substantially simultaneously with disengagement of the other friction clutch, whereby the first and second power paths are alternately connected between the input and output drive means.
Claim 2
Dependent Claim
154 words
A powershift transmission of the type including input and output drive means (12, 20), first and second shafts (26, 13) disposed between the drive means, and first and second power paths (36, 38) disposed between the drive means and alternately connectable between the drive means via the shafts, characterized in that it comprises: first means (42, 74) selectively operative to effect driving connections including the first shaft, either of the power paths, and one of the drive means; second means (42, 74) selectively operative to effect driving connections including the second shaft, either of the power paths, and said one drive means; and first and second frictions clutches (48, 82) for completing the driving connections effected by said first and second means, one of said friction clutches engagable substantially simultaneously with disengagement of the other friction clutch, whereby the first and second power paths are alternately connected between the input and output drive means.
Claim 3
Dependent Claim
128 words
The transmission of claim 1, characterized in that it comprises: input gear means(50, 86, 52) nonrotatably fixed to each of said input shafts; first and second driven gears (44, 76) disposed respectively in said first and second power paths and in constant mesh with said input gear means of said first input shaft; third and fourth driven gears (46, 78) disposed respectively in said first and second power paths and in constant mesh with said input gear means of said second input shaft and said first and said second means being respectively synchronizer clutch means (42, 74) disposed in each of the power paths and selectively engageable to effect driving connections including one of said input shafts, one of said power paths, and one of said drive means.
Claim 4
Dependent Claim
56 words
The transmission of claim 2, characterized in that the first power path includes first and third speed ratios, the second power path includes second and reverse speed ratios, said driving connections effected by said first means includes said first and third ratios, and said driving connections effected by said second means includes,said second and reverse ratios.
Claim 5
Dependent Claim
28 words
The transmission of claims 1, 2 or 3, characterized in that a fluid coupling is interposed between the input drive means (12) and the first input shaft (26).
Claim 6
Dependent Claim
34 words
The transmission of claim 2, characterized in that said first, second, and third driven gears are first, second, and third speed ratio gears; and said fourth driven gear is a reverse speed ratio gear.
Claim 7
Dependent Claim
40 words
The transmission of claims 3 or 5, characterized in that a fluid coupling is interposed between the input drive means and the first input shaft, whereby said first, second, and reverse speed ratios may be driven by said torque converter.