US 11,407,142 B2Granted

Table saw

AssigneeMilwaukee Electric Tool Corporation

InventorsDaniel R. Garces, Travis Mergener, Zhi Bin Li, Hai Feng Jiang, Daryl S. Richards

Life of this patent

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Abstract

A table saw includes a table, a saw unit movably coupled underneath the table, a riving knife extending through the table, and a quick-release assembly selectively coupling the riving knife to the table. The quick-release assembly includes a mounting plate coupled to the table and a clamping plate movable relative to the mounting plate between a clamping position, in which the riving knife is clamped between the mounting plate and the clamping plate to secure the riving knife to the table, and a release position, in which the riving knife is releasable from the table. The quick-release assembly further includes a pin coupled for movement with the clamping plate and a handle pivotably coupled to the pin. The pin has a cam portion engageable with the saw unit. The clamping plate is movable between the clamping position and the release position in response to pivoting movement of the handle.

Claims16

Dependent claims

A table saw comprising:

a table for supporting a workpiece to be cut;
a spindle rotatably coupled to the table about a longitudinal axis for driving a saw blade extending through an opening in the table;
at least one flange plate coupled for co-rotation with the spindle for clamping the saw blade to the spindle;
an actuator movable relative to the spindle between a release position, in which the actuator is disengaged from the spindle, and a lockout position, in which the actuator is engaged with the spindle or the flange plate to prevent rotation of the spindle to facilitate changing the saw blade;
a spring biasing the actuator toward the release position;
and
a bracket rotatably supporting the spindle relative to the table via a bearing, wherein the bracket defines a pocket in which the spring is at least partially positioned,
wherein the actuator is slidable relative to the spindle along an axis that is transverse relative to the longitudinal axis of the spindle,
wherein the actuator is positioned underneath the table, and
wherein the actuator is accessible through the opening in the table.

7 more elements

A table saw comprising:

a table for supporting a workpiece to be cut;
a saw unit movably coupled underneath the table, the saw unit including
a spindle rotatably coupled to the table about a longitudinal axis for driving a saw blade extending through an opening in the table, and
at least one flange plate coupled for co-rotation with the spindle for clamping the saw blade to the spindle;
a riving knife extending through the opening in the table and aligned with the saw blade extending through the opening;
a quick-release assembly selectively coupling the riving knife to the table, the quick-release assembly including
a mounting plate coupled to the table,
a clamping plate that is movable relative to the mounting plate between a clamping position, in which the riving knife can be clamped between the mounting plate and the clamping plate to secure the riving knife to the table, and a release position, in which the riving knife is releasable from the table,
a pin having a first end coupled for movement with the clamping plate, and
a handle pivotably coupled to a second end of the pin and including a cam portion engageable with the saw unit, wherein the clamping plate is movable between the clamping position and the release position in response to pivoting movement of the handle;
an actuator movable relative to the spindle between a release position, in which the actuator is disengaged from the spindle, and a lockout position, in which the actuator is engaged with the spindle or the flange plate to prevent rotation of the spindle to facilitate changing the saw blade;
a spring biasing the actuator toward the release position;
and
a bracket rotatably supporting the spindle relative to the table via a bearing, wherein the bracket defines a pocket in which the spring is at least partially positioned,
wherein the actuator is slidable relative to the spindle along an axis that is transverse relative to the longitudinal axis of the spindle,
wherein the actuator is positioned underneath the table, and
wherein the actuator is accessible through the opening in the table.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/008,845Filed 1 Sep 2020 · continuation
Priority: CN 201720642344.15 Jun 2017
Published: US 2020/0391404 A117 Dec 2020
Granted: 9 Aug 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B27G 19/08
Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws: accessories for keeping…
B23D 45/06
Sawing machines or sawing devices with circular saw blades or with friction saw discs: with a circular saw blade arranged underneath a stationary…
B23D 45/068
With a circular saw blade arranged underneath a stationary work-table: the saw blade being adjustable according to depth or angle of cut
B27G 19/02
Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws: for circular saws

Family

Application15/947,985Parent of this continuation · filed 9 Apr 2018
US 2020/0391404 A1Pre-grant publication · published 17 Dec 2020
US 10,792,834 B2Parent of this continuation
US 2018/0345526 A1Published application
US 11,407,142 B2This patent

From the US filing history. Foreign family members aren’t listed.