Poppet valve bushing with tolerance ring

Details Poppet valve bushing with tolerance ring Poppet valve bushing with tolerance ring

2005-05-10

2005-05-10

Look, Edward K. (Department: 3751)

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

C384S215000

Reexamination Certificate

active

06889956

ABSTRACT:
A pintle bushing assembly for a poppet valve assembly including a tolerance ring which is disposable between the pintle bushing and a bore in the body of the valve to both seal and center the bushing in the bore. The tolerance ring includes a plurality of radially-extending dimples which are deformable during assembly such that the valve pintle can be aligned coaxially with the valve seat under all conditions. An axial flange on the tolerance ring is sealed against axial surfaces of the valve body adjacent the bore and a flange on the bushing to prevent leakage past the bushing.

REFERENCES:
patent: 5439928 (1995-08-01), Karjalainen et al.
patent: 6213447 (2001-04-01), Bircann et al.
patent: 6230742 (2001-05-01), Bircann
patent: 6288878 (2001-09-01), Misso et al.
patent: 6604542 (2003-08-01), Bircann et al.
patent: 6748774 (2004-06-01), Dubay et al.

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