Dual path, dual range transmission

Details Dual path, dual range transmission Dual path, dual range transmission

F - Mech Eng,Light,Heat,Weapons

16

H

74/117

F16H 3/72 (2006.01)

Patent

CA 1075038

DUAL PATH, DUAL RANGE TRANSMISSION ABSTRACT OF THE DISCLOSURE A dual path, dual range transmission utilizes two simple planetaries with a sliding shaft shift wherein a first ring gear is in constant mesh with the first planet gear, the second ring gear is connected with the first carrier and the second ring gear is also in constant mesh with the second planet gear. A variable speed device, drivingly connected with the input shaft, controllably varies the rotative speed of a variable speed control shaft which is connected with the first and second sun gears. The input shaft is also independently drivingly connected with the first ring gear and the second planet carrier, with the output shaft being connected with the first carrier. Means are provided for alter- nately first moving the first sun gear into mesh with the first planet gear, when the pitch line velocity of the first planet gear, relative to the first planet carrier, is substantially the same as the pitch line velocity of the first sun gear, and out of mesh when they are rotating under load, and secondly for moving the second sun gear into mesh with the second planet gear, when the pitch line velocity of the second planet gear, relative to the second planet carrier, is substantially the same as the pitch line velocity of the second sun gear, and out of mesh when they are under load, with this means for moving being activated only when the control shaft is rotating at a selected speed relative to the speed of the two sun gears. -0-

300904

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