Saw blade

• US 5,517,889 A
• Filed: 08/18/1994
• Issued: 05/21/1996
• Est. Priority Date: 07/28/1992
• Status: Expired due to Fees

• Current Assignee: Patrick K. Logan
• Original Assignee: Patrick K. Logan
• Inventors: Logan, Patrick K.
• Primary Examiner(s): Peterson, Kenneth E.
• Application Number:
  US08/292,353
• Time in Patent Office: 642 Days
• Field of Search: 83/835, 83/697, 83/746, 30/355
• US Class Current: 83/835
• CPC Class Codes: B23D 61/126 having cutting teeth along both edges
• CPC Class Codes: B23D 61/128 Sabre saw blades
• CPC Class Codes: Y10T 83/687 By tool reciprocable along elongated edge
• CPC Class Codes: Y10T 83/9319 Toothed blade or tooth therefor

Abstract

An improved saw blade for portable reciprocating power saws in which the end of the blade is curved to enable self starting of the blade while minimizing blade breakage.

Claims

1. A self-starting saw blade for hand-held reciprocating power saws, comprising:

a blade body having a first end segment and a second end segment, a first edge and a second edge, and an elongate, rectilinear segment extending between said first and second end segments, said first edge of said first end segment of said blade body being curved toward said second edge of said first end segment, and said second end segment being engageable with the reciprocating saw;

a first set of teeth extending from said first edge of said first end segment of said blade body, each tooth of said first set of teeth having a configuration generally similar to an isosceles triangle, said first set of teeth projecting outwardly from said first end segment so that said teeth occupy less than 2/3 of a width of said blade at said first end segment;

a second set of teeth extending from said first edge of said rectilinear segment of said blade body, each tooth of said second set of teeth generally raked toward said second end segment of said blade body, and the points of said teeth of said second set of teeth are offset from the points of each adjacent said tooth, whereby the width of the saw cut is increased to prevent blade binding;

a third set of teeth extending from said second edge of said rectilinear segment of said blade body, each tooth of said third set of teeth generally raked toward said second end segment of said blade body, and the points of said teeth of said third set of teeth are offset from the points of each adjacent said tooth, whereby the width of the saw cut is increased to prevent blade binding; and

said second edge of said first end segment maintains the rectilinear configuration of said rectilinear segment of said blade body.

2. The self-starting saw blade described in claim 1, wherein:

the points of said teeth of said first set of teeth are offset from the points of each adjacent said tooth, whereby the width of the saw cut is increased to prevent blade binding.