Table saw with actuator reset mechanism

• US 8,714,061 B2
• Filed: 05/18/2012
• Issued: 05/06/2014
• Est. Priority Date: 08/26/2009
• Status: Active Grant

• Current Assignee: Robert Bosch Tool Corporation (Robert Bosch GmbH)
• Original Assignee: Robert Bosch GmbH
• Inventors: Chung, Brian Hyuk Joon
• Primary Examiner(s): Alie, Ghassem
• Application Number:
  US13/475,281
• Publication Number:
  US 20120227556A1
• Time in Patent Office: 718 Days
• Field of Search: 834/772, 83/621, 83/58, 834/713, 834/712, 835/81, 834/78, 834/90, 836/63, 837/81, 836/54, 144/383, 144/391, 144/427, 144/154.5, 144/356, 318/16, 318/480, 340/686.5, 340/686.6, 340/532
• US Class Current: 83/13
• CPC Class Codes: B23D 45/067 the saw blade being adjustable according to depth or angle of cut
• CPC Class Codes: B23D 59/002 for the position of the saw blade B27B5/36 and B27B9/02 take precedence
• CPC Class Codes: B27B 5/243 the saw blade being arranged underneath the work-table the circular saw blade arranged underneath a stationary work-table for sawing material in general B23D45/06
• CPC Class Codes: B27G 19/02 for circular saws
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 83/04 Processes
• CPC Class Codes: Y10T 83/081 With randomly actuated stopping means
• CPC Class Codes: Y10T 83/089 Responsive to tool characteristic
• CPC Class Codes: Y10T 83/7726 By movement of the tool
• CPC Class Codes: Y10T 83/773 Work-support includes passageway for tool [e.g., slotted table]
• CPC Class Codes: Y10T 83/8749 By pivotal motion

Abstract

A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a latch hold pivotable between a first latch hold position whereat the swing arm assembly can be supported by the latch hold in the first swing arm position and a second latch hold position whereat the swing arm assembly cannot be supported by the latch hold in the first swing arm position, an actuator chamber configured to receive at least one actuator, an opening in the actuator chamber, and a plug aligned with the opening and connected to the latch hold.

Claims

1. A method of operating a table saw comprising:

providing a workpiece support surface;

biasing a latch hold toward a first position using an actuator;

supporting a swing arm assembly of the saw under the workpiece support surface with the latch hold in the first position; and

disengaging the swing arm assembly from the latch hold using the actuator, and moving the latch hold toward a second position by using the actuator.

2. The method of claim 1, wherein biasing the latch hold toward the first position comprises:

supporting a plug with the actuator, the plug operatively contacting the latch hold.

3. The method of claim 2, wherein biasing the latch hold toward the first position comprises:

compressing at least one spring with the plug; and

biasing the latch hold toward the first position using the at least one spring.

4. The method of claim 3, wherein biasing the latch hold toward the first position comprises:

positioning a portion of the plug within an actuator chamber; and

forcing the portion of the plug in a direction outwardly from the actuator chamber.

5. The method of claim 4, wherein biasing the latch hold toward the first position comprises:

transferring force along a first axis to force movement of the plug along a second axis by contacting a rounded portion of the plug with the actuator, wherein the second axis is orthogonal to the first axis.

6. A method of operating a table saw comprising:

providing a table saw;

inserting an actuator within a chamber;

forcing a plug outwardly from the chamber by inserting the actuator;

biasing a latch hold with the outwardly forced plug; and

supporting a swing arm assembly underneath a workpiece support surface of the table saw with the biased latch hold.

7. The method of claim 6, wherein biasing the latch hold comprises:

compressing a spring with the plug.

8. The method of claim 6, wherein:

inserting the actuator includes inserting the actuator along a first axis; and

forcing the plug outwardly includes forcing the plug outwardly along a second axis, the second axis orthogonal to the first axis.

9. The method of claim 6, wherein forcing the plug outwardly comprises:

contacting a rounded portion of the plug with the actuator.