Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Load responsive
Patent
1993-10-28
1995-01-03
Buiz, Michael Powell
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Load responsive
474 28, F16H 5900
Patent
active
053782003
ABSTRACT:
A cone disc transmission is presented which is infinitely adjustable and includes the production of axial pressure forces of the cone discs on pulling member rotating between these cone discs via hydraulic tensioning member. The tensioning member, which are arranged on the transmission shafts, each axially influence one of the cone discs which are displaceably arranged on the respective transmission shaft. By way of a control valve, the tensioning member and the pressure medium conduits connected thereto are charged by a pressure medium which is supplied by a pump. A torque disposed on the drive shaft of the transmission in the reflux of the control valve throttles the reflux of the pressure medium as a result of the torque-dependent movement of two valve members relative to one another and as a function of the load and thus determines the basic pressure of the system. A revolution sensor is provided on the drive shaft, which, as a function of the number of revolutions, provides pressure medium to a control element which, in connection with an adjustment member for drive power, acts upon the transmission ratio by way of the control valve. In this case, pressure medium conduits leading from the control valve to the tensioning member are connected to one another by a short-circuit conduit which is open only if the pump is at rest.
REFERENCES:
patent: 4702725 (1987-10-01), Kouno et al.
patent: 4778435 (1988-10-01), Sugaya et al.
patent: 5169365 (1992-12-01), Friedmann
Buiz Michael Powell
Reimers Getriebe AG
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