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US 6,053,060 AGranted
Two-piece pinion gear
AssigneeJohnson Electric Automotive, Inc.
InventorsRobert L. Tumberlinson, Mauricio Clarke
Life of this patent
Estimating the term…
Abstract
A two-piece pinion gear includes a metal outer portion and a plastic inner portion. The metal outer portion includes a plurality of gear teeth that are adapted to be engaged by a driving member. The plastic inner portion preferably includes a spiraled groove that is adapted to ride along a spiraled track on a spline shaft associated with an electric starting motor.
Claims20
A starting device comprising:
- a plastic spline shaft extending generally outward from a starter motor housing;
- and
- a pinion supported on said spline shaft, said pinion comprising:
- a metal outer portion having a plurality of outwardly extending teeth and a central opening that includes a plurality of first locking members spaced about said central opening;
- and
- a single piece plastic inner portion having a plurality of second locking members spaced about an exterior surface on said inner portion, said second locking members engaging said first locking members to maintain said inner and outer portions in a selected alignment, said inner portion including a central opening to be received on said plastic spline shaft.
3 more elements
A small engine starting device, comprising:
- a starter motor housing;
- a single-piece plastic spline shaft extending outwardly from said housing;
- and
- a pinion supported on said spline shaft and having a single-piece plastic inner portion having a central opening that is received upon said spline shaft and a plurality of first locking members spaced about an exterior surface on said inner portion, and included a metal outer portion having a plurality of radially outwardly extending gear teeth adapted to engage a driving member and a central bore through said outer portion including a plurality of second locking members spaced about said central bore that engage said first locking members such that said inner and outer portions rotate in unison.
1 more element
A small engine starting device, comprising:
- a starter motor housing;
- a plastic spline shaft extending generally outwardly from said housing;
- and
- a pinion supported on said spline shaft and having a single piece plastic inner portion having a central opening that is received upon said spline shaft and a plurality of first locking members, spaced about an exterior surface on said inner portion, and including a metal outer portion having a plurality of radially outwardly extending gear teeth adapted to engage a driving member and a central bore through said outer portion including a plurality of second locking members spaced about said central bore that engage said first locking members such that said inner and outer portions rotate in unison,
- wherein there are an equal number of said teeth, first locking members and second locking members, respectively, and
- wherein each one of said first locking members and second locking members are radially aligned with each one of said teeth.
3 more elements
Dependencies are inferred from the claim text.