F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 55/17 (2006.01) F16H 55/30 (2006.01)
Patent
CA 2739553
A variable diameter gear device for variable ratio transmission systems has a displaceable gear tooth sequence (11) formed from interconnected gear teeth (12) with uniform pitch lying on a virtual cylinder coaxial with an axle (20) of the device. A torque linkage (24) transfers a turning moment between the axle and the gear tooth sequence. A diameter changer includes at least one disc (14) with a spiral track (16) to which each of the gear teeth is linked. Rotation of the discs relative to the axle causes variation of an effective diameter of the virtual cylinder while the gear tooth sequences remain on a virtual cylinder centered on the axis (22) and the uniform pitch remains constant.
L'invention concerne un dispositif d'engrenage à diamètre variable pour des systèmes de transmission à rapport variable, ayant une suite de dents d'engrenage mobile (11) formée de dents d'engrenage solidaires (12) à pas constant reposant sur un cylindre virtuel coaxial à un essieu (20) du dispositif. Une tringlerie de couple (24) transfère un moment de rotation entre l'essieu et la suite de dents d'engrenage. Un organe de changement de diamètre comprend au moins un disque (14) muni d'un chemin en spirale (16) auquel chacune des dents d'engrenage est reliée. La rotation des disques par rapport à l'essieu entraîne une variation d'un diamètre effectif du cylindre virtuel tandis que les suites de dents d'engrenage demeurent sur un cylindre virtuel centré sur l'axe (22) et l'uniformité du pas reste constante.
Eitan Nimrod
Etzion Joseph
Naveh Nathan
Integral Ip
Iqwind Ltd.
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