Table saw with dust shield

Patent metadata

Field	Value
Publication number	US-10076796-B2
Application number	US-54785909-A
Country	US
Kind code	B2
Filing date	Aug 26, 2009
Priority date	Aug 26, 2009
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

A table saw in one embodiment includes a motor, a blade operably connected to the motor, at least a portion of the blade positioned within an enclosure, and a dust plate extending within the enclosure and positioned between the at least a portion of the blade and the motor.

First claim

The invention claimed is:

1. A table saw, comprising:
a swing arm pivotable about a pivot along a swing arm path between a first swing arm position and a second swing arm position;
a latch pin movable between a first latch pin position whereat the latch pin engages a spring biased latch hold such that the swing arm is maintained in the first swing arm position, and a second latch pin position whereat the latch pin does not engage the spring biased latch hold and the swing arm is not maintained in the first swing arm position;
a motor;
a blade operably connected to the motor and supported by the swing arm, at least a portion of the blade positioned within an enclosure;
a dust plate extending within the enclosure and positioned between the at least a portion of the blade and the motor, the dust plate including a shaft slot with an upper portion and a lower portion, wherein the lower portion of the slot is wider than the upper portion of the slot, the dust plate dividing the enclosure into a mechanism portion and a blade portion, the at least a portion of the blade positioned within the blade portion and the swing arm positioned within the mechanism portion; and
a control system that controls an actuating device to cause the actuating device to transfer a force to the swing arm when the swing arm is maintained at the first swing arm position, wherein the force is sufficient to move the latch pin from the first latch pin position to the second latch pin position.

2. The table saw of claim 1 , further comprising:
a dust collection port configured to vent the blade portion of the enclosure.

3. The table saw of claim 1 , wherein the blade is supported by an arbor shaft extending through an arbor shaft slot in the dust plate and the arbor shaft is supported by the swing arm.

4. The table saw of claim 3 , further comprising:
a dust curtain extending adjacent to the slot.

5. The table saw of claim 4 , wherein the dust curtain comprises a plurality of bristles.

6. The table saw of claim 4 , wherein the dust curtain comprises a plurality of interconnected plates.

7. The table saw of claim 1 , wherein the pressure within the mechanism portion is higher than the pressure within the blade portion during operation of the table saw.

8. A table saw, comprising:
a swing arm mounted on a carriage for movement therewith, the swing arm further movable relative to the carriage so as to be movable with respect to a latch hold along a swing arm path between a first swing arm position and a second swing arm position;
a latch pin movable between a first latch pin position whereat the latch pin engages the latch hold such that the swing arm is maintained in the first swing arm position, and a second latch pin position whereat the latch pin does not engage the latch hold and the swing arm is not maintained in the first swing arm position;
a motor;
an enclosure;
a dust plate substantially dividing the enclosure into a mechanism portion and a blade portion, wherein the carriage is movable relative to the dust plate;
a blade operably connected to the motor and supported by the swing arm, at least a portion of the blade positioned within the blade portion of the enclosure;
a shaft slot in the dust plate, the shaft slot including a first end portion and a generally opposing second end portion;
an arbor shaft extending from the swing arm through the shaft slot and supporting the blade; and
a control system that controls an actuating device to cause the actuating device to cause the latch pin to move from the first latch pin position to the second latch pin position,
wherein the first end portion of the shaft slot is configured to allow for linear vertical movement of the arbor shaft during the movement of the carriage relative to the dust plate, and the second end portion of the shaft slot is configured to allow for movement of the arbor shaft during the movement of the swing arm along the swing arm path.

9. The table saw of claim 8 , further comprising:
a dust collection port configured to vent the blade portion of the enclosure.

10. The table saw of claim 8 , further comprising:
a dust curtain extending adjacent to the slot.

11. The table saw of claim 10 , wherein the dust curtain comprises a plurality of bristles.

12. The table saw of claim 10 , wherein the dust curtain comprises a plurality of interconnected plates.

13. The table saw of claim 8 , wherein the pressure within the mechanism portion is higher than the pressure within the blade portion during operation of the table saw.

14. The table saw of claim 8 , wherein the shaft slot has an upper portion and a lower portion, and the lower portion of the slot is wider than the upper portion of the slot.

Assignees

• Chung Brian Hyuk Joon
• Bosch Tool Corp
• Bosch Gmbh Robert

Inventors

• Chung Brian Hyuk Joon

Classifications

• B23Q11/06

  Safety devices for circular cutters · CPC title

• B23D45/067 Primary

  the saw blade being adjustable according to depth or angle of cut · CPC title

• Y10T83/089

  Responsive to tool characteristic · CPC title

• B23D45/066

  the pivoted lever being mounted on a carriage · CPC title

• B23D47/00

  Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts (constructional features of these parts per se B23Q; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title