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US 7,406,902 B2Granted
Battery powered table saws
AssigneeMakita Corporation
InventorsYoshinori Shibata, Junichi Masuda, Hisashi Higuchi
Life of this patent
Estimating the term…
Abstract
A table saw includes a table for placing a workpiece thereon. A saw unit may be vertically movably supported on the table and may have a saw blade mounted thereon. A battery-driven motor may be mounted on the saw unit for rotatably driving the saw blade. A battery mounting device may be provided for mounting a battery on the table saw.
Claims28
A table saw comprising:
- a table adapted to support a workpiece,
- a saw unit disposed above the table and pivotable with respect to the table about a pivotal axis, the saw unit comprising a saw blade, a motor housing and a blade case covering an uppermost portion of the saw blade, the blade case having a rear portion defined closest to the pivotal axis and a front portion defined farthest from the pivotal axis,
- a battery-driven motor disposed within the motor housing and adapted to rotatably drive the saw blade,
- a battery mounting device disposed at the rear portion of the blade case and
- a rechargeable battery detachably mounted within the battery mounting device, wherein the rechargeable battery is disposed above the pivotal axis,
- the battery mounting device is disposed such that when the saw unit is in an uppermost vertical pivot position, the battery center of gravity is positioned on one side of a vertical plane extending through the pivotal axis while the saw unit center of gravity is positioned on the other side of the vertical plane, and such that when the saw unit is in a lowermost vertical pivot position, the battery center of gravity is positioned substantially within the vertical plane.
3 more elements
A table saw comprising:
- a table adapted to support a workpiece,
- a saw unit disposed above the table and pivotable with respect to the table about a pivotal axis, the saw unit comprising a saw blade, a motor housing and a blade case covering an uppermost portion of the saw blade, the blade case having a rear portion defined closest to the pivotal axis and a front portion defined farthest from the pivotal axis,
- a battery-driven motor disposed within the motor housing and adapted to rotatably drive the saw blade,
- a battery mounting device disposed at the rear portion of the blade case and
- a rechargeable battery detachably mounted within the battery mounting device, wherein the rechargeable battery is disposed above the pivotal axis,
- wherein the blade case, the battery mounting device and the motor are positioned substantially within the same plane as the saw blade.
3 more elements
A table saw comprising:
- a table adapted to support a workpiece,
- a saw unit disposed above the table and pivotable with respect to the table about a pivotal axis, the saw unit comprising a saw blade, a motor housing and a blade case covering an uppermost portion of the saw blade,
- a battery-driven motor disposed within the motor housing and adapted to rotatably drive the saw blade,
- a battery mounting device disposed on the blade case and
- a rechargeable battery detachably mounted within the battery mounting device, wherein the rechargeable battery and the battery mounting device are disposed above the table and are substantially aligned in the same plane as the saw blade.
2 more elements
A table saw comprising:
- a table adapted to support a workpiece,
- a saw unit disposed above the table and pivotable with respect to the table about a pivotal axis, the saw unit comprising a saw blade, a motor housing and a blade case covering an uppermost portion of the saw blade,
- a battery-driven motor disposed within the motor housing and adapted to rotatably drive the saw blade,
- a battery mounting device disposed on the blade case and
- a rechargeable battery detachably mounted within the battery mounting device, wherein the battery mounting device is disposed such that when the saw unit is in an uppermost vertical pivot position, the battery center of gravity is positioned on one side of a vertical plane extending through the pivotal axis while the saw unit center of gravity is positioned on the other side of the vertical plane, and such that when the saw unit is in a lowermost vertical pivot position, the battery center of gravity is positioned substantially within the vertical plane.
2 more elements
A table saw comprising:
- a table adapted to support a workpiece,
- a saw unit disposed above the table and pivotable with respect to the table about a pivotal axis, the saw unit comprising:
- a motor disposed in a housing;
- a saw blade operably connected to the motor;
- a handle mounted on the motor housing;
- a battery mounting device disposed on the handle and spaced from the motor housing such that, when the saw unit is in an uppermost vertical pivot position, the battery center of gravity is positioned substantially within a vertical plane extending through the pivotal axis, while the motor center of gravity is positioned outside the vertical plane.
3 more elements
Dependencies are inferred from the claim text.