Internal-combustion engines – Poppet valve operating mechanism – Rocker
Reexamination Certificate
2005-12-20
2005-12-20
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Rocker
C123S090390, C123S090410, C123S090430, C123S090450, C123S090200, C123S090270, C123S090310, C074S569000, C074S519000, C074S559000, C384S058000, C384S548000, C384S549000
Reexamination Certificate
active
06976462
ABSTRACT:
A double roller cam follower includes a longitudinal beam having a first end and a second end, a cam roller rotationally mounted on the beam for engaging a cam lobe and a valve stem roller rotationally mounted on the second end of the beam for engaging a valve stem. The cam roller includes a stepped outer circumference having a larger diameter at its sides to engage the cam lobe and a smaller diameter positioned centrally between the flanking larger diameters to provide clearance between the cam roller and the valve stem roller.
REFERENCES:
patent: 5060606 (1991-10-01), Hubbard
patent: 5074261 (1991-12-01), Hamburg et al.
patent: 5596958 (1997-01-01), Miller
Denion Thomas
Harbin King & Klima
Jesel, Inc.
Riddle Kyle M.
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