Claims
- 1. A pintle type valve assembly, comprising:
a) a metering base sub-assembly; b) an actuator sub-assembly attached to said metering base sub-assembly; c) a pintle shaft sub-assembly extending through a bore in said metering base sub-assembly into said actuator sub-assembly; and d) a shield disposed on said pintle shaft between said metering base sub-assembly and said actuator sub-assembly, said shield including means for attachment to said shaft and a radial flange extending along a surface of said metering base sub-assembly for cooperating with said surface at a first extreme of axial actuation of said pintle shaft to impede leakage of gas from said metering base sub-assembly along said bore.
- 2. A pintle type valve assembly in accordance with claim 1 wherein said metering base sub-assembly comprises a bushing for said pintle shaft, said bore being formed in said bushing, and wherein said surface is an outer surface of said bushing, and wherein said outer bushing surface cooperates with said flange.
- 3. A pintle type valve assembly in accordance with claim 1 wherein said actuator sub-assembly comprises an armature shield having an opening therethrough for passage of said pintle shaft, and wherein said armature shield cooperates with said flange at a second extreme of axial actuation of said pintle shaft to impede leakage of gas from said metering base sub-assembly into said actuator sub-assembly.
- 4. A pintle type valve assembly in accordance with claim 1 wherein said assembly is an exhaust gas recirculation valve for use with an internal combustion engine.
- 5. An internal combustion engine, comprising an exhaust gas recirculation valve, including
a metering base sub-assembly, an actuator sub-assembly attached to said metering base sub-assembly, a pintle shaft sub-assembly extending through a bore in said metering base sub-assembly into said actuator sub-assembly, and a shield disposed on said pintle shaft between said metering base sub-assembly and said actuator sub-assembly, said shield including means for attachment to said shaft and a radial flange extending along a surface of said metering base sub-assembly for cooperating with said surface at a first extreme of axial actuation of said pintle shaft to impede leakage of gas from said metering base sub-assembly along said bore.
RELATIONSHIP TO OTHER APPLICATIONS AND PATENTS
[0001] The present application claims priority from U.S. Provisional Patent Application, Serial No. 60/415,648, filed Oct. 2, 2002.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60415648 |
Oct 2002 |
US |