Invention Grant
- Patent Title: System for adjusting rate of spool centering in a pilot-controlled hydraulic spool valve
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Application No.: US16837117Application Date: 2020-04-01
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Publication No.: US11624452B2Publication Date: 2023-04-11
- Inventor: James Douglas Holmes , Eric Thomas Nelson , Nathan Bradley Wourms
- Applicant: BARKO HYDRAULICS, LLC
- Applicant Address: US WI Superior
- Assignee: BARKO HYDRAULICS, LLC
- Current Assignee: BARKO HYDRAULICS, LLC
- Current Assignee Address: US WI Superior
- Agency: Shook, Hardy & Bacon, LLC
- Main IPC: F16K31/383
- IPC: F16K31/383

Abstract:
The disclosure is directed to an apparatus and system for adjusting rate of spool centering in a pilot-controlled hydraulic spool valve. The apparatus includes a first pilot port and a second pilot port. The apparatus includes a first valve port and a second valve port. The apparatus also includes a first hydraulic circuit connecting the first pilot port and the first valve port, wherein the first hydraulic circuit, based on a hydraulic fluid pressure of the second pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition. The apparatus further includes a second hydraulic circuit connecting the second pilot port and the second valve port, wherein the second hydraulic circuit, based on a hydraulic fluid pressure of the first pilot port, comprises one of a controlled-flow condition and an unrestricted-flow condition.
Public/Granted literature
- US20200326013A1 SYSTEM FOR ADJUSTING RATE OF SPOOL CENTERING IN A PILOT-CONTROLLED HYDRAULIC SPOOL VALVE Public/Granted day:2020-10-15
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