Rotary insulated saw blade

• US 4,026,177 A
• Filed: 07/21/1976
• Issued: 05/31/1977
• Est. Priority Date: 07/21/1976
• Status: Expired due to Term

• Current Assignee: Lokey Tool Incorporated
• Original Assignee: Lokey Tool Incorporated
• Inventors: Lokey, Robert C.
• Primary Examiner(s): Schran, Donald R.
• Application Number:
  US05/707,358
• Time in Patent Office: 314 Days
• Field of Search: 83/835, 83/838, 83/676, 83/58, 83/DIG. 1
• US Class Current: 83/835
• CPC Class Codes: B23D 61/026 Composite body, e.g. laminated
• CPC Class Codes: B27B 5/38 Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing vibration-damping of sawing machines or devices working with circular saw blades B23D47/005
• CPC Class Codes: Y10S 83/01 Safety devices
• CPC Class Codes: Y10T 83/081 With randomly actuated stopping means
• CPC Class Codes: Y10T 83/9319 Toothed blade or tooth therefor
• CPC Class Codes: Y10T 83/9326 Plural separable sections
• CPC Class Codes: Y10T 83/9403 Disc type

Abstract

An insulated saw blade for use with the automatic safety brake for rotary blade equipment, U.S. Pat. No. 3,785,230, to stabilize the capacitance field produced by the blade. The blade has an inner metallic part which is secured to the arbor of the saw an insulating ring rigidly secured to the inner part and extending completely therearound and an outer metallic ring rigidly secured to the insulating ring and having the saw teeth formed thereon. The insulating ring has a roughened surface on its opposite sides to assist in gripping the brake when applied thereto.

Claims

1. A saw blade comprising a generally circular inner metallic portion having an axial arbor bore extending therethrough, an outer metallic ring having saw teeth formed thereon spaced outwardly of the outer edge of said inner portion, and a plastic insulating ring rigidly connecting said inner portion and said outer ring.

2. A device as claimed in claim 1 wherein said inner ring is provided with a plurality of radially extending U-shaped notches in the periphery thereof and said outer ring has a plurality of radially extending U-shaped notches in the inner edge thereof with said insulating ring molded into said notches.

3. A device as claimed in claim 2 wherein bores extend transversely through said inner portion and said outer ring between said respective U-shaped notches with said insulating ring molded through said bores.