Rotary control valve of power steering system and method of producing spool valve member
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 25, 1986
Grant Date -
N/A
app pub date -
Dec 27, 1983
filing date -
Dec 27, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary control valve for an automotive power steering system and a method for making such a valve. The valve includes a tubular valve body and a spool valve member rotatable within the valve body, each of the valve body and spool valve having axially extending grooves. The spool valve member includes control edges formed at the axial grooves to effect control of the area of an opening defined by the edges of the axial grooves of the spool member and the axial grooves of the valve body. The control edges extend parallel to the axial grooves of the spool valve member along substantially the entire length thereof and are defined by at least one arcuate surface portion formed on the spool valve member at axially extending edges of the grooves. The arcuate surface portion has an axis that extends parallel to the axial grooves of the spool valve member.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully