发明名称 |
FORCE BALANCED HYDRAULIC SPOOL VALVE |
摘要 |
<p>A hydraulic spool valve assembly includes a pair of lands spaced apart by a groove, one land comprising a piston face, an adjacent land comprising a hydraulic flow notch, wherein the piston face includes a pair of concentric radially concave concentric. The boundary between the two concave annuli defines a convex split point annulus. The notch is oriented so as to establish a hydraulic fluid flow adapted to impact the split point annulus so as to create inversely directed radial flows across the respective concave annuli. A reverse flow component is thereby established across the groove and back toward the notch to lessen the impact of the force of the hydraulic stream against the split point annulus.</p> |
申请公布号 |
KR0166071(B1) |
申请公布日期 |
1998.12.01 |
申请号 |
KR19900021946 |
申请日期 |
1990.12.27 |
申请人 |
DANA CORP. |
发明人 |
HENNESSY, DAVID R.;WENKER, DENNIS H. |
分类号 |
F16K11/07;(IPC1-7):F15B13/04 |
主分类号 |
F16K11/07 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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