Back to results
US 4,137,785 AGranted
Speed transmission devices
OwnerJean-Claude Virloninventor
Life of this patent
Estimating the term…
Abstract
Speed change mechanism using spaced, rotatable input and output plates, and idlers in rolling point contact with same, and having freedom to oscillate relative to their own guidance shaft about the perpendicular passing through the contact points. The connection between the idlers and the guidance shaft is by entrainment members which can be displaced along the shafts, fix the idlers to the shafts by rotation, and enable oscillating deflection of the idlers about the perpendicular.
Claims17
Transmission device for speed changing, comprising
- a mechanical speed changer having an input shaft and an output shaft, one of which carries two plates fixed for rotation and spaced from each other,
- at least one pair of idlers carried by a fork and positioned within said space and capable of being radially displaced between these plates along guidance shafts to which they are fixed for rotation, the idlers of one pair bearing with rolling point contact against the plates subjected to a pressure force tending to push them against the idlers,
- a control device connected to the transmission by at least one couple regulator enabling modification of the radial position of the said pair of idlers,
- the idlers of one pair being mounted with freedom for oscillation each relative to its own guidance shaft about the perpendicular passing through the contact points between idlers and plates, the system being characterized in that the connection between the idlers and the guidance shafts is provided by entrainment members arranged on the one hand to be axially displaced along the said shafts, on the other hand to fix for rotation the idlers and the shafts, again on the other hand to enable the oscillatory deflection of the idlers about the said perpendicular passing through the contact points between idlers and plates.
1 more element
Dependencies are inferred from the claim text.