Power tool

A method of assembling a tool comprising the steps of:

• providing components for assembly including:
• a generally cylindrical first component, the first component including a radially outward stop at a first axial position on the first component and a plurality of circumferentially spaced radially outwardly extending projections at a second axial position on the first component;
• an annular drive gear;
• a spring member having a first end and a second end;
• a stop ring having an internal surface, the internal surface defining a plurality of recesses corresponding to the plurality of projections, the recesses extending from a first face of the stop ring to an opposite face of the stop ring, the internal surface also defining a plurality of pockets, the pockets open to the opposite face of the stop ring,
• installing the annular drive gear around the first component and adjacent to the radially outward stop;
• installing the spring member around the first component with the first end toward the drive gear and the second end toward the projections;
• circumferentially aligning the recesses in the stop ring with the projections on the first component;
• passing the stop ring over the projections and compressing the spring member so that the recesses pass completely over the projections;
• rotating the stop ring about the first component so as to circumferentially align the pockets in the stop ring with the projections;
• and
• releasing the stop ring to axially fix the stop ring on the first component by the pockets engaging the projections under the biasing force from the spring member.

A hand-held powered tool comprising:

• a housing;
• a spindle mounted within the housing and defining a longitudinal axis;
• the spindle including a plurality of circumferentially spaced and radially outwardly extending projections
• a movable component axially movably mounted to the spindle;
• a stop ring connectable around the spindle and including a radially inner face, a bearing face, and a second face axially opposite to the bearing face,
• a spring located between the bearing face of the stop ring and the movable component and applying an axial biasing force to the moveable component and the stop ring;
• and
• wherein the stop ring defines;
• a plurality of recesses located in the radially inner face of the stop ring, the recesses extending axially and open at the bearing face and open at the second face, and slidable over the projections of the spindle during assembly of the power tool;
• and
• a plurality of pockets located in the radially inner face of the stop ring and open at the second face and engageable with the projections of the spindle such that the stop ring is fixed on the spindle under the biasing force applied by the spring.

A method of assembling a tool comprising the steps of:

• providing components for assembly including:
• a spindle defining a longitudinal axis and including a plurality of circumferentially spaced and radially outwardly extending projections;
• a movable component;
• a stop ring connectable around the spindle and including a radially inner face, a bearing face, and a second face axially opposite to the bearing face, the stop ring defining a plurality of recesses located in the radially inner face of the stop ring, the recesses extending axially and open at the bearing face and open at the second face;
• and
• a spring having a first end and a second end;
• mounting the movable component on the spindle;
• mounting the spring so that the first end of the spring will exert a bias force against the movable component when assembly is complete;
• circumferentially aligning the recesses in the stop ring with the projections on the spindle;
• passing the stop ring over the projections in a first axial direction so that the recesses pass completely over the projections;
• rotating the stop ring about the spindle so as to circumferentially aligning the pockets in the stop ring with the projections;
• moving the stop ring in a second axial direction;
• and
• engaging the pockets of the stop ring with the projections of the spindle so as to fix the stop ring on the spindle under a biasing force exerted by the second end of the spring when assembly is complete.