Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Fluid pressure actuator for adjustment of member
Patent
1982-10-05
1985-02-19
Novosad, Stephen J.
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Fluid pressure actuator for adjustment of member
13762561, F16H 1104
Patent
active
045003017
ABSTRACT:
In apparatus for controlling the transmission ratio of an infinitely variable V-belt transmission of the kind including a fluid control valve which supplies fluid to and relieves fluid from a cylinder space the volume of which controls the transmission ratio by adjusting the axial position of a first conical sheave portion relative to a second conical sheave portion, the valve including a valve housing and an internal axially displaceable valve body, the improvement which includes an electromagnet having a displaceable armature and a winding which upon electrical energization produces a displacing force on the armature; a spring connected between the armature and the axially displaceable valve body, the arrangement being such that a displacing force on the armature produced by energization of the electromagnet produces a displacing force, via the spring on the valve body in a first direction; and a fluid connection device controlled by the position of the armature for supplying fluid pressure to the valve body to effect a displacing force thereon in a direction opposite to the first direction such that the valve body is displaced in such opposite direction to a position in which the displacing forces on the valve body are balanced.
REFERENCES:
patent: 2896588 (1959-07-01), Hayner et al.
patent: 2972467 (1961-02-01), Gilman
patent: 3918312 (1975-11-01), Espenschied et al.
patent: 4369675 (1983-01-01), Van Deursen
patent: 4387608 (1983-06-01), Mohl et al.
Bui Thuy M.
Novosad Stephen J.
VAN Doorne's Transmissie B.V.
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