Saw blade

• US 4,827,822 A
• Filed: 08/18/1987
• Issued: 05/09/1989
• Est. Priority Date: 04/03/1985
• Status: Expired due to Term

• Current Assignee: Amada Company Limited
• Original Assignee: Amada Company Limited
• Inventors: Tsujimoto, Susumu, Kawabata, Katsuhiko, Yoshida, Sumio, Takegawa, Yoshikazu
• Primary Examiner(s): Yost, Frank T.
• Assistant Examiner(s): Smith, Scott A.
• Application Number:
  US07/087,392
• Time in Patent Office: 630 Days
• Field of Search: 83/848, 83/849, 83/850, 83/851, 83/676, 83/661, 83/835
• US Class Current: 83/835
• 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: Y10T 83/9319 Toothed blade or tooth therefor
• CPC Class Codes: Y10T 83/935 Plural tooth groups
• CPC Class Codes: Y10T 83/9353 Including raker tooth group
• CPC Class Codes: Y10T 83/9355 Including intermediate raker tooth
• CPC Class Codes: Y10T 83/9358 Series of dissimilar teeth

Abstract

A saw blade such as a bandsaw blade, circular saw blade, or backsaw blade has a pair of leading teeth which cut the workpiece and advance in a feed direction while the workpiece is being cut and a plurality of trailing teeth which cut the workpiece later than the leading teeth and serve to widen the leading cut channel. The leading teeth and the trailing teeth form one basic group in which the heights of the trailing teeth from a basic position on the saw blade are equal to or smaller than the height of the leading teeth. The trailing teeth are set in the right and left directions with respect to the saw blade and the leading teeth are slightly set with respect to the saw blade.

Claims

1. A saw blade, comprising:

a pair of leading teeth and

a plurality of trailing teeth having a height equal to or smaller than that of the leading teeth,

wherein the pair of leading teeth is slightly set in the lateral direction, the plurality of trailing teeth is set wider than that of the leading teeth, wherein the plurality of trailing teeth comprises a first plurality of trailing teeth which are the same in height as the pair of leading teeth, and a second plurality of trailing teeth which are different in height and smaller than the height of the pair of leading teeth, and

wherein each tooth of the second plurality of trailing teeth is adjacent to one of the leading teeth or one of the first plurality of the trailing teeth, at each side thereof.

2. The saw blade of claim 1 wherein the first plurality of trailing teeth are positioned between a first tooth of the second plurality of trailing teeth and a second tooth of the second plurality of trailing teeth.

3. The saw blade of claim 2 wherein each of the teeth are alternately set in opposed lateral directions.

4. The saw blade of claim 1 wherein there are four trailing teeth.