Invention Grant
- Patent Title: Direct operated cartridge valve assembly
- Patent Title (中): 直接插入式阀组件
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Application No.: US11581840Application Date: 2006-10-16
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Publication No.: US07766042B2Publication Date: 2010-08-03
- Inventor: Joseph Edward Tabor
- Applicant: Joseph Edward Tabor
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc
- Current Assignee: Caterpillar Inc
- Current Assignee Address: US IL Peoria
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLC
- Main IPC: F15B13/044
- IPC: F15B13/044

Abstract:
A cartridge valve assembly includes a body having a central bore, a first port, a second port, and a third port fluidly connected to the central bore. The cartridge valve assembly further includes a main spool positioned within the central bore and being movable between at least a first position and a second position. The main spool forms, within the central bore, a first chamber, and a second chamber, and a control chamber. The cartridge valve assembly also includes a first passage fluidly communicating the first chamber with the second chamber, and an actuator adapted to apply a force to a first end of the main spool. The cartridge valve assembly further includes a feedback spool having an end exposed to a feedback chamber formed within the body, and a second passage fluidly communicating the control chamber with the feedback chamber.
Public/Granted literature
- US20080087345A1 Direct operated cartridge valve assembly Public/Granted day:2008-04-17
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