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US 8,474,160 B1Granted
Center pin support for a dragline excavating machine
AssigneeWarfab Industries, Inc.
InventorsMarty W. Thomas, James Alan Ehret
Life of this patent
Estimating the term…
Abstract
A center pivot pin support bearing assembly to provide rotatable center restraint for a dragline excavator machine. Multiple center pin bearing support fittings imparts stabilization and additional bearing wear surfaces for increased pin useful service life before replacement. An axially center pin bore receiving fitting is provided for longitudinal spaced multiple support fits combination with a center pin receiving stabilization base and fit.
Claims7
A center pin support for a walking dragline excavator comprises,
- a center pin receiving housing having a base plate,
- a primary bearing fitting centrally secured within said center pin receiving housing,
- a center pin receiving bore in said bearing fitting,
- an independent annular horizontally dipsosed bearing platform within said housing on said base plate in vertical spaced relation to said bearing fitting,
- a bearing fitting support sleeve extending between said bearing fitting and said bearing platform,
- an annular recess in said bearing platform aligned with said center pin receiving bore, a center pin registerable within said center pin receiving bore and said annular recess in said bearing platform,
- a first and second bearing pin surface within said bearing fitting.
4 more elements
Dependencies are inferred from the claim text.