Abstract:
A high pressure fluid coupling means provides a fluid tight connection between two separable members in a fluid circuit while concurrently allowing slight axial and lateral misalignment between such members. An expansible, flexible seal ring provides sealing with movement accommodation while a rigid back-up ring abuts said expansible, flexible seal ring to prevent it from dislodging from the coupling under the influence of high fluid pressure. The coupling mean is used to connect the respective inlet and outlet manifolds in a hydraulic motor-pump set.
Abstract:
A track drive vehicle incorporating a pair of hydrostatic transmissions in the drive train for individual track drive is provided with a control system that is responsive to the vehicle steering control to automatically proportion transmission setting during a turn to prevent turns at excessive speeds and also to prevent over-pressurization of the hydrostatic drive system.
Abstract:
A vehicle incorporating a pair of hydostatic transmissions in the drive train is provided with a control system that automatically proportions engine horsepower between vehicle drive and vehicle implements. The control system is responsive to engine speed which is proportional to engine load to control transmission output.
Abstract:
There is disclosed a control system for interconnecting a plurality of hydrostatic transmissions for synchronous operation. The control system includes means to adjust the null position of the pumps and motors and means to adjust the gain between the two machines.