Power plants – Pressure fluid source and motor – Having a signal – indicator or inspection means
Reexamination Certificate
2005-12-13
2005-12-13
Look, Edward K. (Department: 3745)
Power plants
Pressure fluid source and motor
Having a signal, indicator or inspection means
C060S445000
Reexamination Certificate
active
06973779
ABSTRACT:
An agricultural-implement hydraulic circuit includes a pump supplying pressurized fluid to a first service line and a second service line via a feed line and a device for varying the flow rate of the pump. A distributor valve is disposed between the first service line and the second service line, with the first service line and the second service line being connected and disconnected according to a position of the distributor valve. A hydraulic motor is coupled to the first service line through the valve and discharges fluid to a return line. A hydraulic actuator is coupled to the second service line. An indicator-valve assembly is coupled to the feed line, with the indicator-valve assembly including an indicator sensitive to pressure in the feed line such that the indicator indicates a predetermined pressure in the feed line to an operator.
REFERENCES:
patent: 5452579 (1995-09-01), Friedrichsen
patent: 5493861 (1996-02-01), Friedrichsen
patent: 5873245 (1999-02-01), Kato et al.
patent: 6295810 (2001-10-01), Langen et al.
patent: 4120733 (1993-07-01), None
Naaktgeboren Adrianus
Osselaere Guy H. J.
CNH America LLC
Kershteyn Igor
Look Edward K.
Stader John William
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