Miter saw
AssigneeMilwaukee Electric Tool Corporation
InventorsMike Brewster, Taylor Crabb, Josh Adams, Steven Cunningham, David Rose, Daryl S. Richards, Jeffrey S. Holly, Brian Wattenbach, Scott R. Fischer
Life of this patent
Estimating the term…
Abstract
A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a saw arm, a brushless motor supported by the saw arm, and power electronics positioned outside the motor for supplying power to the motor. The power electronics are coupled to a structural component of the miter saw to utilize the entire mass of the structural component as a heat sink to dissipate heat generated by the power electronics.
Claims33
A miter saw comprising:
- a base assembly;
- and
- a saw unit pivotably coupled to the base assembly, the saw unit including
- a saw arm,
- a brushless motor supported by the saw arm, and
- power electronics positioned outside the motor for supplying power to the motor, wherein the power electronics are coupled to a structural component of the miter saw to utilize the entire mass of the structural component as a heat sink to dissipate heat generated by the power electronics.
A miter saw comprising:
- a base assembly;
- a saw unit pivotably coupled to the base assembly, the saw unit including a saw blade and a lower blade guard covering a lower portion of the saw blade;
- and
- a linkage for raising the lower blade guard to expose the lower portion of the saw blade as the saw unit is lowered toward the base assembly, wherein the linkage is operable to apply a force to the lower blade guard for holding the lower blade guard in a raised position, without any input from the operator of the miter saw, to facilitate changing the saw blade.
A miter saw comprising:
- a base assembly;
- a saw unit pivotably coupled to the base assembly, the saw unit including a saw blade and an upper blade guard covering an upper portion of the saw blade;
- and
- a cut line indicator coupled to the upper blade guard, the cut line indicator including
- a light source, and
- a cover positioned between the saw blade and the light source;
- wherein the cover includes a slot through which light from the light source passes to illuminate opposite sides of the saw blade and a work piece supported upon the base assembly, thereby casting a shadow of the saw blade onto the work piece.
33-64. (canceled)
Dependencies are inferred from the claim text.