Reciprocating saw
AssigneeMilwaukee Electric Tool Corporation
InventorsJoshua Adams, Ryan J. Denissen
Life of this patent
Estimating the term…
Abstract
A reciprocating saw includes a housing, a motor, and a drive mechanism. The motor includes an output gear rotatable about a motor axis. The drive mechanism includes a driven gear that engages the output gear and is rotated by the motor. The driven gear has a circumference and is vertically-oriented within the housing. The drive mechanism also includes an output shaft driven by the motor to reciprocate relative to the housing. The drive mechanism further includes a counterweight fixed relative to the driven gear and rotating with the driven gear. The counterweight includes a mass portion having a leading edge, a trailing edge, and a curved outer perimeter extending more than 90 degrees and less than 180 degrees between the leading and trailing edges.
Claims20
A reciprocating saw comprising:
- a housing including a rearward portion and a forward portion, the rearward portion having a handle;
- a motor positioned within the housing, the motor including an output gear rotatable about a motor axis;
- and
- a drive mechanism positioned within the housing and coupled to the motor, the drive mechanism including:
- a driven gear that engages the output gear and is rotated by the motor, the driven gear having a circumference and being vertically-oriented within the housing,
- an output shaft driven by the motor to reciprocate relative to the housing, the output shaft configured to support a tool element adjacent the forward portion of the housing, and
- a counterweight fixed relative to the driven gear and rotating with the driven gear, the counterweight including a mass portion having a leading edge, a trailing edge, and a curved outer perimeter, the curved outer perimeter extending more than 90 degrees and less than 180 degrees between the leading and trailing edges, and the counterweight is configured to move a blade in a blade cutting direction during a non-cutting stroke.
A reciprocating saw comprising:
- a housing including a rearward portion and a forward portion, the rearward portion having a battery support portion;
- a motor positioned within the housing, the motor including an output gear rotatable about a motor axis;
- and
- a drive mechanism positioned within the housing and coupled to the motor, the drive mechanism including:
- a driven gear that engages the output gear and is rotated by the motor, the driven gear having a circumference and being vertically-oriented within the housing,
- an output shaft driven by the motor to reciprocate relative to the housing, the output shaft configured to support a tool element adjacent the forward portion of the housing, and
- a counterweight coupled to the driven gear and rotating with the driven gear, the counterweight including a mass portion having a leading edge, a trailing edge, and a curved outer perimeter, the curved outer perimeter extending more than 90 degrees and less than 180 degrees between the leading and trailing edges;
- wherein the battery support portion and the output shaft are located on opposite sides of the motor axis.
A reciprocating saw comprising:
- a housing including a rearward portion and a forward portion;
- a motor positioned within the housing, the motor including an output gear rotatable about a motor axis;
- and
- a drive mechanism positioned within the housing and coupled to the motor, the drive mechanism including:
- a driven gear that engages the output gear and is rotated by the motor, the driven gear having a circumference and being vertically-oriented within the housing,
- an output shaft driven by the motor to reciprocate relative to the housing, the output shaft configured to support a tool element adjacent the forward portion of the housing, and
- a counterweight fixed relative to the driven gear and rotating with the driven gear, the counterweight including a mass portion having a leading edge, a trailing edge, and a curved outer perimeter, the curved outer perimeter extending less than 180 degrees between the leading and trailing edges, and the counterweight is configured to move a blade in a blade cutting direction during a non-cutting stroke.
Dependencies are inferred from the claim text.