Table saw

• US 6,009,782 A
• Filed: 06/18/1998
• Issued: 01/04/2000
• Est. Priority Date: 06/19/1997
• Status: Expired due to Term

• Current Assignee: Makita Corporation
• Original Assignee: Makita Corporation
• Inventors: Tajima, Nobuo, Haneda, Katsuji, Mineda, Seiichi
• Primary Examiner(s): Rachuba, M.
• Assistant Examiner(s): PRYOR, SEAN AUGUSTUS
• Application Number:
  US09/099,150
• Time in Patent Office: 565 Days
• Field of Search: 83/99, 83/168, 83/471.3, 83/468.7, 83/490, 83/100, 83/477.2, 83/169
• US Class Current: 83/99
• CPC Class Codes: B23D 59/006 for removing or collecting chips
• CPC Class Codes: B23Q 11/005 by blowing
• CPC Class Codes: Y10T 83/2068 Plural blasts directed against plural product pieces
• CPC Class Codes: Y10T 83/7697 Tool angularly adjustable relative to work-support
• CPC Class Codes: Y10T 83/773 Work-support includes passageway for tool [e.g., slotted table]

Abstract

A table saw has a motor driven rotary blade disposed in a blade case and vertically adjustable with respect thereto. During cutting, wood chips are expelled from the blade case even when the rotary blade is vertically disposed away from a bottom of the blade case. An air current, provided by a fan driven by the motor, is blown from a motor gear housing and guided to the blade case via a plurality of guide members. The air current subsequently blows along an inner surface of the blade case in order to blow the wood chips out a chip discharge port.

Claims

1. A table saw comprising:

a table having a top surface;

a rotary blade axially connected to a motor for being driven thereby, with the rotary blade being vertically adjustable with respect to the table top surface;

a blade case attached to the table and covering a substantially lower half of said rotary blade, the blade case having a downward blowout port disposed therein and a chip discharge port provided in a rear bottom portion of the blade case; and

an air current guide path disposed between the motor and the blade case for supplying an air current to the downward blowout port, the air current passing from the motor, along the air current guide path, through the downward blowout port, and into the blade case in order to propel chips produced by the blade toward and out of thin discharge port.

2. The table saw of claim 1 wherein the blade case is tiltably attached to the table.

3. The table saw of claim 1 wherein a fan is axially attached to the motor and disposed within the gear housing, the motor driving the fan in order to cool the motor and produce the air current.

4. The table saw of claim 1 wherein the motor guide member comprises a generally planar motor guide member attachment portion for attaching the motor guide member to the gear housing and a generally planar motor guide member guide plate, the motor guide member guide plate being obliquely integral with or attached to the motor guide member attachment portion.

5. The table saw of claim 1 wherein the blade case guide member comprises a generally planar blade case guide member attachment portion and the guide plate portion of the blade case guide member, and the blade case guide member guide plate portion being generally planar and being obliquely integral with or attached to the blade case guide member attachment portion.

6. The table saw of claim 5 wherein the blade case guide member attachment portion has a void disposed therein shaped complementary to the through hole, whereby when the blade case guide member is attached to the blade case proximate the through hole with the void and the through hole aligning, the air current is able to travel through the void and the through hole, through the downward blowout port and into the blade case.

7. A table saw comprising:

a table having a top surface;

a blade case tiltably attached to the table, the blade case having a downward blowout port disposed therein and a chip discharge port provided in a rear bottom portion of the blade case;

a rotary blade axially connected to a motor for being driven thereby, the motor being vertically adjustably attached to the blade case and the blade case covering substantially a lower half of the rotary blade; and

an air current guide path disposed between the motor and the blade case for supplying an air current to the downward blowout port, the air current passing from the motor, along the air current guide path, through the downward blowout port, and into the blade case in order to propel chips produced by the blade toward and out of the discharge port.

8. The table saw of claim 7 wherein the motor guide member comprises a generally planar motor guide member attachment portion for attaching the motor guide member to the gear housing and a generally planar motor guide member guide plate, the motor guide member guide plate being obliquely integral with or attached to the motor guide member attachment portion.

9. The table saw of claim 7 wherein the blade case guide member comprises a generally planar blade case guide member attachment portion and a generally planar blade case guide member guide plate portion, and the blade case guide member guide plate portion being obliquely integral with or attached to the blade case guide member attachment portion.