Blade drop power tool with dust management

• US 9,517,516 B2
• Filed: 03/11/2014
• Issued: 12/13/2016
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Robert Bosch Tool Corporation (Robert Bosch GmbH)
• Original Assignee: Robert Bosch GmbH, Robert Bosch Tool Corporation (Robert Bosch GmbH)
• Inventors: Doumani, Robert S.
• Primary Examiner(s): Alie, Ghassem
• Application Number:
  US14/203,893
• Publication Number:
  US 20140260859A1
• Time in Patent Office: 1,008 Days
• Field of Search: 831/62, 831/65, 831/47, 83/98, 834/772, 831/68, 831/12, 834/771, 834/00, 834/91, 834/73, 835/81, 835/082, 836/981.1, 836/09
• US Class Current: 1/1
• CPC Class Codes: B23D 45/065 with the saw blade carried by a pivoted lever
• CPC Class Codes: B23D 45/066 the pivoted lever being mounted on a carriage
• CPC Class Codes: B23D 59/006 for removing or collecting chips
• CPC Class Codes: Y10T 83/2209 Guide
• CPC Class Codes: Y10T 83/2216 Inclined conduit, chute or plane

Abstract

A power equipment in one embodiment includes a swing arm assembly movable along a swing arm path between a first swing arm position adjacent a latch hold mechanism and a second swing arm position spaced apart from the latch hold mechanism, a shroud portion mounted on the swing arm assembly and configured to partially enclose a shaping device when the shaping device is mounted on the swing arm assembly, and a hose system configured such that when a hose system inlet plenum is aligned with a shroud portion outlet plenum, dust from the shroud portion outlet plenum is passed to the hose system inlet plenum and the hose system inlet plenum does not interfere with movement of the swing arm assembly along the swing arm path.

Claims

1. A power tool, comprising:

a power tool housing;

a hose system including a hose system inlet plenum located within the power tool housing;

a swing arm assembly pivotable between a first swing arm position adjacent a latch hold mechanism within the housing whereat the swing arm assembly is latched by the latch hold mechanism and a second swing arm position spaced apart from the latch hold mechanism whereat the swing arm assembly is not latched by the latch hold mechanism; and

a shroud portion mounted on the swing arm assembly and including a shroud portion outlet plenum, wherein the shroud portion is configured such that when the swing arm assembly is in the first swing arm position, the shroud portion outlet plenum is aligned with the hose system inlet plenum, and when the swing arm assembly is in the second swing arm position, the shroud portion outlet plenum is not aligned with the hose system inlet plenum.

2. The power tool of claim 1, further comprising:

a frame pivotably supported within the housing; and

a carriage pivotably supporting the swing arm assembly, the carriage movably supported by the frame, wherein the hose system inlet plenum is rigidly supported by the carriage.

3. The power tool of claim 2, wherein the hose system comprises:

a hose system outlet plenum coupled with an outlet port of the frame; and

a flexible portion positioned between the hose system inlet plenum and the hose system outlet plenum.

4. The power tool of claim 3, wherein the hose system and the shroud portion are configured to be slidingly engaged when the swing arm assembly is the first swing arm position.

5. The power tool of claim 3, wherein the hose system and the shroud portion are configured to be spaced apart when the swing arm assembly is in the second swing arm position.

6. The power tool of claim 3, wherein the hose system and the shroud portion are configured to be coupled when the swing arm assembly is in the first swing arm position.

7. The power tool of claim 6, further comprising:

a flexible boot configured to automatically couple the hose system and the shroud portion when the swing arm assembly is pivoted from the second swing arm position to the first swing arm position.

8. The table saw of claim 3, wherein:

the hose system comprises a rigid portion rigidly supported by the carriage; and

the flexible portion is positioned between the rigid portion and the frame.

9. The power tool of claim 1, wherein the shroud portion further comprises:

an outer surface defining an incline; and

a vent extending from the outer surface to an inner surface of the shroud portion, the vent aligned with the ramp and configured such that an air flow from a motor is directed through the vent and toward the shroud portion outlet plenum.