Bearing structure for a reciprocating shaft in a reciprocating saw
OwnerMichael Lagaly, Thomas Mooty +3inventors
InventorsMichael Lagaly, Thomas Mooty, James Nichols, Earl Clowers, Matthew Popik
Life of this patent
Estimating the term…
Abstract
A reciprocating shaft assembly in a reciprocating saw moves in a reciprocal motion and drives a saw blade via a blade holder. At least one bore is formed in an end of the reciprocating shaft assembly opposite the blade holder. A pin fixed to the saw passes through the bore and acts as a bearing to support the reciprocating shaft assembly in its reciprocating motion.
Claims7
A power operated reciprocating tool comprising:
- a motor;
- a reciprocating shaft adapted for reciprocal movement along a longitudinal axis, and adapted to support a working tool;
- a drive assembly operatively associated with the motor for driving the reciprocating shaft in a reciprocal motion;
- a drive housing enclosing at least a portion of the shaft and the drive assembly;
- a counterweight positioned at least partially within the drive housing and operatively connected with the drive assembly,
- the counterweight including a slide which rides in a slot formed on an inside surface of the drive housing;
- and
- a main body housing including a handle portion,
- the main body housing enclosing the drive housing.
The power operated reciprocating tool of claim 19, the motor comprising:
- a motor shaft operatively coupled with the drive assembly, the motor shaft extending through the drive housing.
The power operated reciprocating tool of claim 20, wherein the motor shaft extends at least partially through an opening in the counterweight.
The power operated reciprocating tool of claim 19, the counterweight slide comprising:
- a first tab extending from the periphery of the counterweight.
The power operated reciprocating tool of claim 22, the counterweight slide further comprising:
- a second tab extending from the periphery of the counterweight in a direction opposite the first tab with respect to an axis of reciprocating motion.
The power operated reciprocating tool of claim 19, the drive assembly comprising:
- a crank gear having a toothed peripheral wall,
- wherein a portion of the counterweight extends around at least a portion of the crank gear peripheral wall
The power operated reciprocating tool of claim 19, the counterweight comprising:
- at least one surface adjacent to the crank gear which has a radius of curvature substantially corresponding to that of the crank gear.
Dependencies are inferred from the claim text.