Invention Grant
- Patent Title: Lockout solenoid valve for brake actuator and system thereof
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Application No.: US17110885Application Date: 2020-12-03
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Publication No.: US11543045B2Publication Date: 2023-01-03
- Inventor: Marcus L. Kuhl
- Applicant: DEERE & COMPANY
- Applicant Address: US IL Moline
- Assignee: DEERE & COMPANY
- Current Assignee: DEERE & COMPANY
- Current Assignee Address: US IL Moline
- Agency: Taft Stettinius & Hollister LLP
- Agent Stephen F. Rost
- Main IPC: F16K11/07
- IPC: F16K11/07 ; F16K31/06 ; E02F9/20 ; F15B13/04

Abstract:
An electrohydraulic valve system for controlling a braking system of a work machine includes a valve body forming a bore and a fluid channel, a valve spool disposed within the bore, and a first armature positioned with respect to the valve spool to move the valve spool axially within the bore between a first position and a second position. A spring is disposed within the bore, where the valve spool is biased to its first position by the spring. A first electromagnetic coil is operably controlled between an energized state and a de-energized state, and a lockout system is formed at least partially within the valve body. The lockout system includes a second armature, a second electromagnetic coil, and a lockout spring, where the second electromagnetic coil is operably controlled between an energized state and a de-energized independently of the first electromagnetic coil.
Public/Granted literature
- US20210285563A1 LOCKOUT SOLENOID VALVE FOR BRAKE ACTUATOR AND SYSTEM THEREOF Public/Granted day:2021-09-16
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