Edgeless Valve Spool Design with Variable Clearance

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专利权人:

Caterpillar Inc.

发明人:

Bean Sunil J.,Hazari Shivangini Singh

申请号：

US201615264210

公开号：

US2018073644(A1)

申请日:

2016.09.13

申请国别(地区):

美国

年份:

2018

代理人:

摘要：

A valve spool may include a cylindrical spool body having a spool longitudinal axis, a first spool body end wall and a second spool body end wall disposed axially opposite the first spool body end wall, and a spool outer surface. The spool outer surface may include a first spool guide region proximate the first spool body end wall and having a spool guide region outer diameter, a second spool guide region proximate the second spool body end wall and having the spool guide region outer diameter, and a spool tight clearance region disposed between the first spool guide region and the second spool guide region. The spool tight clearance region may have a spool tight clearance region outer diameter that is greater than the spool guide region outer diameter.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/