F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/204
F16H 1/10 (2006.01) B41F 13/00 (2006.01) F16H 7/08 (2006.01)
Patent
CA 1220956
DIFFERENTIAL DRIVE MECHANISM Abstract of the Disclosure A drive mechanism especially useful in assemblage with a harmonic drive transmission for providing a desired rotational input to the wave generator of the harmonic drive transmission, and allows for a wide speed range selection while mini- mizing component wear, instability, and heat genera- tion problems. Such a harmonic drive assembly is particularly useful in powering a controlled infeed or chill stand in a printing press and permits the precise adjustment of the tension of the continuous paper web moving through such a press. The drive mechanism supplies rotational movement from the input shaft of the harmonic drive transmission to the wave generator tuner shaft and includes pulley means operatively coupled to the input shaft, an arm assem- bly mounted for pivotal movement about the tuner shaft, and a positioning mechanism for precisely pivoting the arm assembly as desired. The arm assem- bly includes a variable sheave pulley operatively interconnected with the pulley means and tuner shaft, such that pivoting the arm assembly changes the pitch diameter of the variable sheave pulley and effects a corresponding change in the rotational velocity of the wave generator tuner shaft.
465411
Didde Graphic Systems Corporation
Gowling Lafleur Henderson Llp
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