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公开(公告)号：US09863120B2
公开(公告)日：2018-01-09
申请号：US14699024
申请日：2015-04-29
Applicant: Caterpillar Inc.
Inventor： William N. O'Neill , Lance M. Cowper , Michael T. Jackson
CPC classification number: E02F3/844 , E02F3/7618 , E02F9/2203
Abstract: A control system for a work implement of a machine having a frame is provided. The control system includes a pair of lift cylinders operatively coupled to the work implement and configured to raise or lower the work implement with respect to the frame. Each of the lift cylinders has a rod end and a cap end. The control system includes a first cross-over line configured to fluidly communicate the rod ends to each other and a second cross-over line configured to fluidly communicate the cap ends to each other. The control system includes a cross-over valve disposed in one of the first and second cross-over lines and configured to regulate a flow of hydraulic fluid therethrough. The control system further includes a controller communicably coupled to the cross-over valve and configured to at least partially close the cross-over valve during a dump cycle of the work implement.
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公开(公告)号：US12172711B2
公开(公告)日：2024-12-24
申请号：US17376982
申请日：2021-07-15
Applicant: Caterpillar Inc.
Inventor： Edward William Mate , William N. O'Neill , Jeremy T Peterson , Richard A Carpenter
Abstract: A secondary steering pump system may include a secondary steering pump, a bypass valve having a first bypass position configured for placing the secondary steering pump in fluid communication with a hydraulic tank and a second use/testing position configured for placing the secondary steering pump in fluid communication with a steering control circuit. The system may also include a solenoid valve configured for actuation by a solenoid and for selectively actuating the bypass valve from the first position to the second position. The system may also include a pressure sensor configured for sensing pressure in the system.
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公开(公告)号：US20170167113A1
公开(公告)日：2017-06-15
申请号：US14964744
申请日：2015-12-10
Applicant: Caterpillar Inc.
Inventor： William N. O'Neill , Michael Thomas Jackson
CPC classification number: E02F9/2217 , E02F3/7618 , E02F3/844 , E02F9/2228 , E02F9/2292
Abstract: A control system for a work implement of a machine having a frame is provided. The control system includes a fluid source configured to provide a supply of pressurized fluid and a pair of tilt cylinders in fluid communication with the fluid source. The tilt cylinders are configured to operatively tilt the work implement with respect to the frame of the machine. Each of the tilt cylinders has a rod end and a cap end between which a regenerative valve is disposed to selectively allow fluid communication between the rod end and the cap end of a corresponding tilt cylinder. The control system further includes a controller communicably coupled to each of the regenerative valves. The controller is configured to vary an amount of restriction in each regenerative valve to regulate an amount of fluid flowing between the rod end and the cap end of the corresponding tilt cylinder.
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Patent Agency Ranking
公开(公告)号：US11654815B2
公开(公告)日：2023-05-23
申请号：US17164512
申请日：2021-02-01
Applicant: Caterpillar Inc.
Inventor： Edward William Mate , William N. O'Neill , Dennis William Dicker
CPC classification number: B60P1/162 , F15B11/04 , G05D7/014 , F15B2211/30505 , F15B2211/3111 , F15B2211/3127 , F15B2211/3144 , F15B2211/31576 , F15B2211/329 , F15B2211/7053 , F15B2211/7741
Abstract: A valve for controlling a hydraulic cylinder on a work machine may include a raising position configured for placing a pump in fluid communication with a cap end of the hydraulic cylinder. The valve may also include closed center position configured for closing off fluid communication to the cap end line and the rod end line. The valve may also include a lowering position configured for placing the pump in fluid communication with the rod end of the hydraulic cylinder. The valve may also include a snubbing position configured for placing the cap end in restricted flow fluid communication with the tank and for placing the rod end in restricted flow fluid communication with the tank.
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公开(公告)号：US20230019722A1
公开(公告)日：2023-01-19
申请号：US17376982
申请日：2021-07-15
Applicant: Caterpillar Inc.
Inventor： Edward William Mate , William N. O'Neill , Jeremy T. Peterson , Richard A. Carpenter
Abstract: A secondary steering pump system may include a secondary steering pump, a bypass valve having a first bypass position configured for placing the secondary steering pump in fluid communication with a hydraulic tank and a second use/testing position configured for placing the secondary steering pump in fluid communication with a steering control circuit. The system may also include a solenoid valve configured for actuation by a solenoid and for selectively actuating the bypass valve from the first position to the second position. The system may also include a pressure sensor configured for sensing pressure in the system.
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公开(公告)号：US20220242295A1
公开(公告)日：2022-08-04
申请号：US17164512
申请日：2021-02-01
Applicant: Caterpillar Inc.
Inventor： Edward William Mate , William N. O'Neill , Dennis William Dicker
Abstract: A valve for controlling a hydraulic cylinder on a work machine may include a raising position configured for placing a pump in fluid communication with a cap end of the hydraulic cylinder. The valve may also include closed center position configured for closing off fluid communication to the cap end line and the rod end line. The valve may also include a lowering position configured for placing the pump in fluid communication with the rod end of the hydraulic cylinder. The valve may also include a snubbing position configured for placing the cap end in restricted flow fluid communication with the tank and for placing the rod end in restricted flow fluid communication with the tank.
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公开(公告)号：US11428336B2
公开(公告)日：2022-08-30
申请号：US17112624
申请日：2020-12-04
Applicant: Caterpillar Inc.
Inventor： William N. O'Neill , Bruno L. Risatti , Michael A. Zolvinski , Bill F. Erdman , Dayao Chen
Abstract: A ball float vent valve includes a valve body having an inlet port, an outlet port and an axial passageway there-between. The passageway may be defined by a cylindrical inlet chamber, a cylindrical outlet chamber and a tapered seat connecting the inlet chamber and outlet chamber. The outlet chamber may include an annular retaining groove proximate the outlet port. A spherical float may be positioned in the outlet chamber. The float may be dimensioned to seal the passageway when seated on the tapered seat. A retainer positioned in the retaining groove may include an outer crescent region having a plurality of apertures, a center region dimensioned to retain the float in the outlet chamber, and a linking region connecting the outer region to the center region.
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公开(公告)号：US20160319512A1
公开(公告)日：2016-11-03
申请号：US14699024
申请日：2015-04-29
Applicant: Caterpillar Inc.
Inventor： William N. O'Neill , Lance M. Cowper , Michael T. Jackson
CPC classification number: E02F3/844 , E02F3/7618 , E02F9/2203
Abstract: A control system for a work implement of a machine having a frame is provided. The control system includes a pair of lift cylinders operatively coupled to the work implement and configured to raise or lower the work implement with respect to the frame. Each of the lift cylinders has a rod end and a cap end. The control system includes a first cross-over line configured to fluidly communicate the rod ends to each other and a second cross-over line configured to fluidly communicate the cap ends to each other. The control system includes a cross-over valve disposed in one of the first and second cross-over lines and configured to regulate a flow of hydraulic fluid therethrough. The control system further includes a controller communicably coupled to the cross-over valve and configured to at least partially close the cross-over valve during a dump cycle of the work implement.
Abstract translation: 提供了一种具有框架的机器的工作装置的控制系统。 控制系统包括一对可操作地联接到工作工具并且构造成相对于框架升高或降低工作工具的提升缸。 每个提升缸具有杆端和帽端。 控制系统包括：第一交叉线，其配置成将杆端部彼此流体连通;以及第二交叉线，其配置成将帽端部彼此流体连通。 控制系统包括设置在第一和第二交叉管线中的一个中并被构造成调节通过其的液压流体流动的交叉阀。 所述控制系统还包括可通信地联接到所述交叉阀并被配置为在所述工作装置的转储循环期间至少部分地关闭所述交叉阀的控制器。
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