Invention Grant
- Patent Title: Electrohydraulic valve having dual-action right-angle pilot actuator
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Application No.: US14934591Application Date: 2015-11-06
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Publication No.: US09915368B2Publication Date: 2018-03-13
- 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
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- Main IPC: F16K31/06
- IPC: F16K31/06 ; F16K11/06 ; F16K27/04 ; E02F9/00

Abstract:
A pilot actuator is disclosed for use with a valve. The pilot actuator may have a cage with a base end and a tip end, and a pilot bore formed in the cage. The pilot actuator may also have a supply port, a drain port, a first end port, and a second end port each formed in the cage and intersecting with the pilot bore. The pilot actuator may further have a pilot spool slidingly disposed in the pilot bore and movable to selectively connect the supply port and the drain port with the first and second end ports, a follower separate from the cage and disposed at the tip end of the cage, and at least one spring operatively connecting the follower to the cage and to the pilot spool.
Public/Granted literature
- US20170130857A1 ELECTROHYDRAULIC VALVE HAVING DUAL-ACTION RIGHT-ANGLE PILOT ACTUATOR Public/Granted day:2017-05-11
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