Outer bearing retention structures for ratchet hammer mechanism
AssigneeBlack & Decker Inc.
InventorsDaniel Puzio, Robert Gehret, Warren Ceroll, Craig Schell
Life of this patent
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Abstract
Provided are various embodiments of structures that may utilized in a power driver, particularly in a power driver having an optional reciprocating “hammer” action, for retaining an outer bearing during assembly and/or operation of the power driver. In particular, the disclosed structures provide one or more surfaces, particularly inner peripheral surfaces, that limit outward axial movement of the bearing along the input shaft. These structures may include combinations of surfaces defined by retaining means, an input shaft, biasing means and chuck shields for positioning the outer bearing within the power driver.
Claims25
A power driver comprising:
- a power driver housing;
- an input shaft supporting chuck jaws and mounted for rotation relative to the power driver housing;
- an inner bearing assembly providing rotational support for the input shaft;
- an outer bearing assembly providing rotational support for the input shaft;
- a hammer assembly arranged between the inner and outer bearings to impart an axial displacement of the actuator shaft between an initial position and a displaced position relative to the power driver housing during rotation of the input shaft;
- a biasing assembly tending to return the input shaft to the initial position;
- and
- a bearing retainer fixed to the power driver housing to limit an outward axial movement of the outer bearing assembly relative to the power driver housing.
A power driver comprising:
- a power driver housing;
- an input shaft supporting chuck jaws and mounted for rotation relative to the power driver housing;
- a bearing assembly providing rotational support for the input shaft;
- and
- a bearing retainer fixed to the power driver housing to limit an outward axial movement of the bearing assembly relative to the power driver housing.
A power driver comprising:
- a power driver housing;
- a input shaft supporting chuck jaws and mounted for rotation relative to the power driver housing;
- a bearing assembly providing rotational support for the input shaft;
- and
- a bearing retainer to limit an outward axial movement of the bearing assembly relative to the power driver housing.
Dependencies are inferred from the claim text.