Claims
- 1. A needle valve comprising a housing having an inlet means, and outlet means and a flow path formed there between, a cylindrical valve seat in said flow path, a hollow valve stem threadedly engaged with said housing and moveable coaxially toward and away from said cylindrical valve seat, said hollow valve stem having its end remote from said cylindrical valve seat closed and its end near said cylindrical valve seat open, a tapered needle affixed within said hollow valve stem by having one end secured to said closed end of said hollow valve stem and having its free end extending outwardly from said open end of said hollow valve stem and having its main axis at an angle to the main axis of said hollow valve stem, said needle adapted to enter and withdraw from said cylindrical valve seat as said hollow valve stem moves toward and away therefrom to decrease and increase, respectively, the flow through said needle valve, said needle physically touching the inner surface of said cylindrical valve seat throughout its movement therein.
- 2. A needle valve as defined in claim 1, wherein said needle is in contact with said open end of said hollow valve stem as it extends therefrom.
Parent Case Info
This application is a continuation of U.S. Ser. No. 539,362 filed Oct. 6, 1983 now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2323206 |
Nov 1973 |
DEX |
Continuations (1)
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Number |
Date |
Country |
Parent |
539362 |
Oct 1983 |
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