Jigsaw Blade

• US 20090144992A1
• Filed: 12/03/2008
• Published: 06/11/2009
• Est. Priority Date: 12/11/2007
• Status: Active Grant

• Current Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Original Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Inventors: Bucks, Brent L.
• Granted Patent: US 9,364,907 B2
• Time in Patent Office: Days
• US Class Current: 30/355
• CPC Class Codes: B23D 49/162 Pad sawing devices
• CPC Class Codes: B23D 61/121 Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
• CPC Class Codes: B23D 61/128 Sabre saw blades

Abstract

A jigsaw blade has an elongated body with a first and second end, a cutting edge and an opposing back edge. A plurality of teeth is formed on the cutting edge. The first tooth of the plurality of teeth is immediately adjacent the second end of the blade. The first tooth is raker tooth and has a rake face and a clearance face. The rake face and clearance face intersect to form a cutting edge of the first tooth. The second end defines a plunging nose. The second end includes a nose end surface that extends between the cutting edge and the back edge. The nose end surface is on an angle of about 35° with respect to a line defined by tips of the plurality of teeth. The nose end surface intersects the first tooth relief surface to form an angled cutting edge with a leading sharp point.

Claims

1. A jigsaw blade comprising:

an elongated body having a first and second end, a cutting edge and an opposing back edge, said first end being a shanking end for securing the jigsaw blade with a jigsaw;

a plurality of teeth formed on said cutting edge, a first tooth of said plurality of teeth is immediately adjacent said second end, said first tooth being a full tooth, said first tooth being a raker tooth, said first tooth having a rake face and a clearance face, said rake face and clearance face intersecting one another forming a cutting edge of said first tooth;

said second end defining a plunging nose, said second end including an end surface extending between said cutting and back edges, said nose end surface being on an angle of 30°

to 45°

with respect to a line defined by tips of said plurality of teeth, said nose end surface intersecting said first tooth relief surface to form a cutting edge with a sharp leading point so that during plunge cutting with said jigsaw blade, said sharp leading point initiates cutting of a workpiece.

2. The jigsaw blade according to claim 1 wherein a remainder of said plurality of teeth being fleam teeth.

3. The jigsaw blade according to claim 1, wherein said angle of said nose end surface is about 35°

.

4. The jigsaw blade of claim 1, wherein said elongated body includes a pair of major faces between said cutting and back edges, said major faces each angled from said cutting edge to back edge on an inward angle of about 2°

.

5. The jigsaw blade of claim 1, wherein said clearance face and nose end surface define an included angle of about 66°

to 96°

.

6. The jigsaw blade of claim 5, wherein said included angle being about 76°

.

7. The jigsaw blade of claim 1, wherein said first tooth being a fleam tooth.

8. A jigsaw blade comprising:

an elongated body having a first and second end, a cutting edge and an opposing back edge, a pair of major side faces between said cutting and back edge, said first end being a shanking end for securing the jigsaw blade with a jigsaw;

a plurality of teeth formed on said cutting edge, said plurality of teeth being fleam teeth, a first tooth of said plurality of teeth is immediately adjacent said second end, said first tooth being a full tooth, said first tooth being a raker tooth, said first tooth having a rake face and a clearance face, said rake face and clearance face intersecting one another forming a cutting edge of said first tooth;

said second end defining a plunging nose, said second end including a nose end surface extending between said cutting and back edges, said nose end surface being on an angle of 30°

to 45°

with respect to a line defined by tips of said plurality of teeth, said nose end surface intersecting said first tooth relief surface to form an angled cutting edge having a leading edge portion and a trailing edge portion, said leading edge portion forming a sharp point, an inclusion angle is formed between said first tooth relief face and said nose end surface having an angle of about 66°

to 96°

, said relief surface acting as a rake face so that during plunge cutting with said jigsaw blade, said sharp point initiates cutting of a workpiece.

9. The jigsaw blade of claim 8, wherein said major side faces each angled from said cutting edge to said back edge on an inward angle of about 2°

.

10. The jigsaw blade of claim 8, wherein said included angle being about 76°

.

11. The jigsaw blade of claim 8 wherein said remaining plurality of teeth are offset with respect to one another.