Invention Application
- Patent Title: VALVE HAVING RIGHT-ANGLE PROPORTIONAL AND DIRECTIONAL PILOT ACTUATORS
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Application No.: US14934568Application Date: 2015-11-06
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Publication No.: US20170130745A1Publication Date: 2017-05-11
- Inventor: Dennis Ray BARBER
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Peoria
- Assignee: CATERPILLAR INC.
- Current Assignee: CATERPILLAR INC.
- Current Assignee Address: US IL Peoria
- Main IPC: F15B13/02
- IPC: F15B13/02 ; F16K31/122 ; F16K11/07

Abstract:
A valve is disclosed for use with a hydraulic circuit. The valve may have a valve block, a central bore formed in the valve block, an actuator passage formed in the valve block and intersecting with the central bore, and at least one of a supply and a drain passage. The valve may also have a control spool movable to selectively connect the actuator passage and the at least one of the supply passage and the drain passage. The control spool may have a base end, and a tip end with a tapered outer surface. The valve may also have a first actuator configured to selectively meter a flow of pilot fluid and having a feedback follower configured to ride along the tapered outer surface of the control spool, and a second actuator configured to selectively direct the pilot fluid to the base and tip ends of the control spool.
Public/Granted literature
- US09803661B2 Valve having right-angle proportional and directional pilot actuators Public/Granted day:2017-10-31
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