Reciprocating Saw Blade for Cutting Drywall

• US 20090049973A1
• Filed: 07/17/2008
• Published: 02/26/2009
• Est. Priority Date: 08/21/2007
• Status: Active Grant

• Current Assignee: Brian J. Huffer, Emmett J. Ebner
• Original Assignee: Brian J. Huffer, Emmett J. Ebner
• Inventors: Ebner, Emmett J., Huffer, Brian J.
• Granted Patent: US 8,365,644 B2
• Time in Patent Office: Days
• US Class Current: 83/697
• CPC Class Codes: B23D 61/12 Straight saw blades; Strap saw blades
• CPC Class Codes: B27B 33/02 Structural design of saw blades or saw teeth
• CPC Class Codes: Y10T 83/9319 Toothed blade or tooth therefor
• CPC Class Codes: Y10T 83/935 Plural tooth groups
• CPC Class Codes: Y10T 83/9454 Reciprocable type

Abstract

There is provided a replaceable drywall saw blade capable of reciprocating in-line when mounted to a hand held reciprocating power saw. The blade includes a generally planar body member having a generally linear top edge and a generally parallel opposed bottom edge. The blade further includes a generally linear upper piercing edge angularly offset downwardly from the top edge. The blade additionally includes a generally linear lower piercing edge angularly offset upwardly from the bottom edge. The upper piercing edge and lower piercing edge intersect to form a forward point on said blade. A mounting aperture is also formed on the blade for releasably securing the blade to the hand held reciprocating power saw.

Claims

1. A replaceable drywall saw blade capable of reciprocating in-line when mounted to a hand held reciprocating power saw, said blade comprising:

a generally planar body member having a generally linear top edge and a generally parallel opposed bottom edge;

a generally linear upper piercing edge angularly offset downwardly from the top edge;

a generally linear lower piercing edge angularly offset upwardly from the bottom edge, wherein the upper piercing edge and lower piercing edge intersect to form a forward point on said blade; and

a mounting aperture connected to the body member for releasably securing the blade to the hand held reciprocating power saw.

2. The replaceable drywall saw blade of claim 1 wherein the upper piercing edge and the lower piercing edge intersect at a right angle.

3. The replaceable drywall saw blade of claim 1 wherein the generally linear upper piercing edge and the top edge intersect to form an obtuse angle.

4. The replaceable drywall saw blade of claim 1 wherein the generally linear lower piercing edge and the bottom edge intersect to form an obtuse angle.

5. The replaceable drywall saw blade of claim 1 wherein the lower piercing edge defines a lower piercing length equal to the distance along the lower piercing edge between the forward point and the bottom edge, and the upper piercing edge defines an upper piercing length equal to the distance along the upper piercing edge between the forward point and the bottom edge, the upper piercing length being larger than the lower piercing length.

6. The replaceable drywall saw blade of claim 1 wherein the generally planar body member includes a pair of opposing lateral body surfaces extending between the top edge and the bottom edge, the pair of opposing lateral body surfaces defining a blade thickness.

7. The replaceable drywall saw blade of claim 6 wherein the blade thickness is substantially uniform.

8. The replaceable drywall saw blade of claim 1 further including at least one saw tooth formed in the bottom edge.

9. The replaceable drywall saw blade of claim 8 wherein the at least one saw tooth includes at least two saw teeth.

10. A blade for use with a reciprocating saw for cutting drywall, the drywall having a first drywall outer layer and an opposing second drywall outer layer, the blade comprising:

a body member having a substantially planar body top edge and an opposing, substantially planar body bottom edge, the body top and bottom edges being substantially parallel;

a blade tip integral with the body member, the blade tip including an upper piercing edge angularly offset downwardly from the body top edge, and a lower piercing edge angularly offset upwardly from the body bottom edge, the blade tip being insertable into the drywall to pierce through the first and second drywall outer layers; and

an engagement element connected to the body member, the engagement element being sized and configured to be releasably engageable with the reciprocating saw.

11. The blade of claim 10 wherein the upper piercing edge is substantially orthogonal to the lower piercing edge.

12. The blade of claim 11 further including at least one saw tooth connected to the bottom edge, the at least one saw tooth being configured to cut the first drywall outer layer upon removal of the blade from the drywall.

13. The blade of claim 12 wherein the at least one saw tooth includes at least two saw teeth.

14. The blade of claim 10 wherein the generally linear upper piercing edge and the top edge intersect to form an obtuse angle.

15. The blade of claim 10 wherein the generally linear lower piercing edge and the bottom edge intersect to form an obtuse angle.

16. The blade of claim 10 wherein the lower piercing edge and upper piercing edge intersect to form a forward point, the lower piercing edge defining a lower piercing length equal to the distance along the lower piercing edge between the forward point and the bottom edge, the upper piercing edge defining an upper piercing length equal to the distance along the upper piercing edge between the forward point and the bottom edge, the upper piercing length being larger than the lower piercing length.

17. The blade of claim 10 wherein the body member includes a pair of opposing lateral body surfaces extending between the top edge and the bottom edge, the pair of opposing lateral body surfaces defining a blade thickness.

18. The blade of claim 17 wherein the blade thickness is substantially uniform.

19. The blade of claim 10 wherein the engagement element includes a mounting aperture sized and configured to be engageable with the reciprocating saw.

20. A blade for use with a reciprocating saw for cutting drywall, the drywall having a first drywall outer layer and an opposing second drywall outer layer, the blade comprising:

a body member having a substantially planar body top edge and an opposing, substantially planar body bottom edge, the body top and lower edges being substantially parallel;

a blade tip integral with the body member, the blade tip including an upper piercing edge angularly offset downwardly from the body top edge, and a lower piercing edge angularly offset upwardly from the body bottom edge, the blade tip being insertable into the drywall to pierce through the first and second drywall outer layers; and

an engagement element connected to the body member, the engagement element being sized and configured to be releasably engageable with the reciprocating saw.