Jigsaw

Patent metadata

Field	Value
Publication number	US-12564890-B2
Application number	US-202318139629-A
Country	US
Kind code	B2
Filing date	Apr 26, 2023
Priority date	May 4, 2022
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A jigsaw including a housing, a handle extending transverse from the housing in a direction of a handle axis, a battery selectively coupled to the handle, a foot plate coupled to the housing and configured to contact a workpiece, and a drive assembly powered by the battery. The drive assembly includes a motor, a fan, a transmission driven by the motor, and an output spindle driven by the transmission and coupled to a cutting blade. The jigsaw also includes a frame supported within the housing which supports the motor and the transmission. The frame includes a shroud surrounding at least a portion of the fan and an air chute in fluid communication with the shroud that together direct an airflow produced by the fan toward a cutting area adjacent the cutting blade. The jigsaw also includes a baffle that is selectively moveable into the air chute to redirect the airflow away from the cutting blade.

First claim

What is claimed is:

1 . A jigsaw comprising:
a housing; a handle extending substantially transverse from the housing in a direction of a handle axis; a battery selectively coupled to the handle; a foot plate coupled to the housing and configured to contact a workpiece during a cutting operation; a drive assembly powered by the battery, the drive assembly including
a motor,
a fan,
a transmission driven by the motor, and
an output spindle driven by the transmission in a reciprocating manner and coupled to a cutting blade;
a frame supported within the housing, the frame includes two apertures which, in turn, support the motor and the transmission, the frame further includes a shroud surrounding at least a portion of the fan and an air chute in fluid communication with the shroud that together direct an airflow produced by the fan toward the cutting blade; and a baffle that is selectively moveable into the air chute to redirect the airflow away from the cutting blade.

2 . The jigsaw of claim 1 , further comprising a dust shield that is removably coupled to the housing for creating a debris chamber, wherein the debris chamber is enclosed by at least portions of the housing, the foot plate, and the dust shield.

3 . The jigsaw of claim 2 , wherein the foot plate includes a passageway configured to be coupled to a vacuum source, such that the vacuum source may draw dust and debris from the debris chamber via the passageway in the foot plate.

4 . The jigsaw of claim 1 , wherein the fan creates a low-pressure zone within the housing, which draws the airflow through at least one vent in the housing, the motor, and the fan, and wherein the fan creates a high-pressure zone adjacent the cutting blade to disperse dust and debris away from the cutting blade.

5 . The jigsaw of claim 1 , wherein the baffle is moveable between an open position, in which the airflow is permitted to travel through the air chute and toward the cutting blade, and a closed position, in which the baffle inhibits the airflow from traveling toward the cutting blade and instead redirects the airflow out of the housing away from the cutting blade.

6 . The jigsaw of claim 5 , further comprising a switch coupled to the baffle, wherein manual actuation of the switch moves the baffle between the open position and the closed position.

7 . The jigsaw of claim 1 , further comprising an air guide disposed between the air chute and the cutting blade, wherein the air guide is configured to direct the airflow towards the cutting blade.

8 . The jigsaw of claim 7 , wherein the air guide is removably coupled to the frame.

9 . The jigsaw of claim 7 , wherein the air guide is integrally formed with the frame.

10 . The jigsaw of claim 7 , further comprising a linkage operable to selectively impart an orbit motion to the cutting blade, wherein the air guide is integrally formed with the linkage.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Jubeck John M
• Weber Andrew J
• Edwards Jacob A
• Moorleghen Ryan D
• Leidel Matthew
• Fan Wu

Classifications

• B23D59/0062

  by blowing · CPC title

• B23D51/16 Primary

  of drives or feed mechanisms for straight tools, e.g. saw blades, or bows · CPC title

• B23D49/16

  actuated by electric or magnetic power or prime movers (B23D49/11 takes precedence) · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B23D51/00

  Sawing machines or sawing devices working with straight 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); Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends · CPC title