Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2007-12-25
2007-12-25
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
C123S495000, C417S470000
Reexamination Certificate
active
10994291
ABSTRACT:
A fuel pump for an internal combustion engine including a fuel pump housing, a cylindrical bore having a central axis and being defined by a bore wall surface, a receiving hole formed in the housing, and a tappet assembly received in the cylinder bore. The tappet assembly includes an outer peripheral surface with an elongated key slot longitudinally extending parallel to the central axis. A guide key partially received in the receiving hole is provided, the guide key including a head that extends into the cylindrical bore to engage the elongated key slot of the tappet assembly. The head has an outer dimension that is larger than a dimension of the receiving hole along the central axis. Methods for guiding a reciprocating tappet assembly in a fuel pump and assembling a fuel pump are also provided.
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Shaull Anthony A.
Thayer Wesley R.
Brackett, Jr. Tim L.
Cummins Inc.
Miller Carl S.
Nixon & Peabody LLP
Schelkopf J. Bruce
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