F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
192/15
F16H 3/44 (2006.01) F16H 1/28 (2006.01)
Patent
CA 1117451
ABSTRACT OF THE DISCLOSURE A multi-speed planetary gear transmission comprising a casing, primary and secondary shafts, each journalled in the cas- ing, a planet carrier drivingly connected to one of said shafts with at least one planet gear mounted therein, each planet gear having at least two gearings of different diameters, at least three annular gears, one of said annular gears being a drive annular gear drivingly engaged with each of the remaining annular gears engaging the shaft other than the one to which the planet carrier is drivingly engaged, one of the said planet gearings, a direct drive coupling for directly drivingly connecting the drive annular gear and the planet carrier, a coupling associated with each of the said remaining annular gears for connecting it against rotation relative to the casing, servo-motor means for connecting each of the said couplings, and at least one of said couplings being a friction disc coupling with a first set of discs fixed against rotation relative to a first member, and a second set comprising a single disc or a plurality of discs, interposed between the discs of the first set, being constrained against rotation relative to its respective annular gear, the disc or discs of both sets being movable axially against each other for engaging of the coupling and axially away from each other for release of the coupling, and means for providing an air flow path into and through the location of the discs, including between the adjacent discs, when the coupling is disengaged.
344890
Ahlen Karl G.
Bergstrom Per-Olof
Marks & Clerk
S.r.m. Hydromekanik Aktiebolag
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