Configurable hydraulic system for agricultural tractor and...

Details Configurable hydraulic system for agricultural tractor and... Configurable hydraulic system for agricultural tractor and...

2004-12-16

2008-10-14

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

C091S508000

Reexamination Certificate

active

07434392

ABSTRACT:
When different implements are attached to an agricultural tractor, various hydraulic actuators on the implement are operated by connection to the hydraulic system on the tractor. A single hydraulic fluid connector on the tractor has first and second ports with a separate valve assembly provided to control fluid of fluid to and from each port. This enables one doubling-acting hydraulic actuator to be connected to both connector ports so that the fluid flow to and from the actuator is controlled. For a different implement, one single-acting hydraulic actuator can be connected to one connector port and another single-acting hydraulic actuator can be connected to the other port of the same connector. Individual operation of the valve assembly for each port in this case allows independent control of the two single-acting hydraulic actuators.

REFERENCES:
patent: 3048981 (1962-08-01), Mark et al.
patent: 3561541 (1971-02-01), Woelfel
patent: 4193458 (1980-03-01), Meinert et al.
patent: 4967851 (1990-11-01), Barber
patent: 5918558 (1999-07-01), Susag
patent: 6973779 (2005-12-01), Naaktgeboren et al.

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