Patrick X Opdenbosch

20130047592, Feb 28, 2013

Aug 31, 2011

13/222945

Patrick Opdenbosch - Peoria IL, US
Michael L. Knussman - Peoria IL, US
Joshua Dierking - Peoria IL, US

F15B 13/042

60327, 60459

A hydraulic system is disclosed. The hydraulic system may have a primary pump, a hydraulic actuator, and first and second passages fluidly connecting the primary pump to the hydraulic actuator in a closed-loop manner. The hydraulic system may also have a charge circuit, a makeup valve movable to selectively allow charge fluid from the charge circuit to enter the first or second passages, and at least one restricted pilot passage configured to direct pilot fluid to the makeup valve to move the makeup valve and allow the charge fluid into the first and second passages.

20130047599, Feb 28, 2013

Aug 31, 2011

13/222990

Patrick OPDENBOSCH - Peoria IL, US
Michael L. Knussman - East Peoria IL, US
Joshua Dierking - Peoria IL, US

F16H 61/4035
F16D 31/02
F15B 13/01
F16K 17/04
F16K 15/00

60464, 251337, 137516, 60468

A hydraulic system is disclosed. The hydraulic system may have a pump, a hydraulic actuator, and first and second passages fluidly connecting the pump to the hydraulic actuator in a closed-loop. The hydraulic system may also have a control valve, and a load-holding valve configured to selectively lock movement of the hydraulic actuator. The load-holding valve may include a valve block at least partially defining a pump passage, an actuator passage, a control passage, a restricted passage connecting the actuator passage and the control passage, and a bypass passage connecting the actuator passage and the control passage. The load-holding valve may also include a valve element movable between a first position at which flow between the pump and the hydraulic actuator is blocked, and a second position at which fluid is allowed to flow between the pump and the hydraulic actuator, the valve element being spring-biased toward the first position.

20130048117, Feb 28, 2013

Aug 31, 2011

13/222895

Patrick OPDENBOSCH - Peoria IL, US
Michael L. KNUSSMAN - East Peoria IL, US
Joshua DIERKING - Peoria IL, US

F15C 3/00
F16K 11/20

13756501, 137597

A hydraulic system is disclosed. The hydraulic system may have a pump, a tank, a displacement actuator having first and second chambers, a regeneration valve, and a load-holding valve. The hydraulic system may also have a displacement control valve including a valve element, and a stationary cage portion at least partially forming a high-pressure passage fluidly connecting the pump and valve element, a low-pressure passage fluidly connecting the valve element and tank, a first displacement actuator passage fluidly connecting the valve element and first chamber, a second displacement actuator passage fluidly connecting the valve element and second chamber, a load-holding control passage fluidly connecting the valve element and load-holding valve, and a regeneration control passage fluidly connecting the valve element and regeneration valve. The displacement control valve may also include a movable cage portion that is movable to selectively restrict fluid flow through only the first and second displacement actuator passages.

20130081384, Apr 4, 2013

Sep 30, 2011

13/250171

Patrick OPDENBOSCH - Peoria IL, US

F15B 13/04
F15B 13/042
F15B 13/044

60327, 60494

A hydraulic system is disclosed. The hydraulic system may have an over-center, variable-displacement pump, an actuator, and first and second passages that create a closed-loop circuit. The hydraulic system may also have first and second check valves disposed in the first and second passages, respectively, to allow flow only from the pump to the actuator. The hydraulic system may further have a first bypass line connecting the first passage at a location between the actuator and the first check valve to the first passage at a location between the first check valve and the pump, and a second bypass line connecting the second passage at a location between the actuator and the second check valve to the second passage at a location between the second check valve and the pump. The hydraulic system may additionally have a valve configured to control flow through the first and second bypass lines.

20130081385, Apr 4, 2013

Sep 30, 2011

13/250250

Patrick OPDENBOSCH - Peoria IL, US

F15B 11/20

60327, 60484

A hydraulic system is disclosed. The hydraulic system may have a pump, a rotary actuator, a linear actuator, and a closed-loop circuit fluidly connecting the pump to the rotary and linear actuators. The hydraulic system may also have at least one valve configured to switch fluid flow direction from the pump through the linear actuator during fluid flow in a single direction through the rotary actuator.

20130081704, Apr 4, 2013

Sep 30, 2011

13/250067

Patrick OPDENBOSCH - Peoria IL, US

F17D 1/16
E03B 7/07

137 14, 137563

A hydraulic system is disclosed. The hydraulic system may have a pump, a first actuator, and a meterless circuit connecting the first actuator to the pump. The hydraulic system may also have a second actuator connected to the meterless circuit in parallel with the first actuator. The second actuator may be a variable-area linear actuator

20130098012, Apr 25, 2013

Oct 21, 2011

13/278720

Patrick OPDENBOSCH - Peoria IL, US

F15B 1/04

60327, 60413

A hydraulic system is disclosed. The hydraulic system may have a first meterless circuit with a first pump fluidly connected to a first actuator in a closed-loop manner, and a second meterless circuit with a second pump fluidly connected to a second actuator in a closed-loop manner. The hydraulic system may also have at least one accumulator configured to receive pressured fluid from and discharge pressurized fluid to the first and second meterless circuits.

20130098015, Apr 25, 2013

Oct 21, 2011

13/278894

Patrick OPDENBOSCH - Peoria IL, US

F15B 11/17

60327, 60420

A hydraulic system hydraulic system includes a variable displacement pump, and a variable displacement first travel motor selectively fluidly connected to the pump in a closed-loop manner. The system also includes a first switching valve associated with the first travel motor and configured to selectively switch a flow direction of fluid passing through the first travel motor from the pump. The system further includes a variable displacement second travel motor selectively fluidly connected to the pump in a closed-loop manner. The system also includes a second switching valve associated with the second travel motor and configured to selectively switch a flow direction of fluid passing through the second travel motor from the pump.