Title:
往復型ブレードを具えた動力のこぎり用のブレード
Document Type and Number:
Japanese Patent JPH061294
Kind Code:
Y2
Abstract:
A saw blade, for a power saw having two such blades arranged adjacent and parallel to each other and reciprocating in opposite directions, comprises an elongate blade member having teeth along a bottom edge. The teeth comprise at least three types, a first type being at an outer surface of the blade member, a third type being at the inner surface, and the second type being therebetween. The first type are shaped to produce on the blade's bottom edge an outward force away from the inner surface while cutting a workpiece, and the second and third types are shaped to produce on the blade's bottom edge an inward force, the resultant force on the teeth while cutting urging the teeth in an inward direction away from the outer surface towards the inner surface. When the power saw is operating with a pair of these blades, the blades are urged together at their teeth by the cutting action so effectively eliminating penetration of sawdust and cuttings between the pair of blades. Advantageously the saw blades can be very thin-walled, e.g. 1mm to 2mm thick.
More Like This:
Inventors:
Ernst シュタース
Holst Grossman
Holst Grossman
Application Number:
JP17143487U
Publication Date:
January 12, 1994
Filing Date:
November 11, 1987
Export Citation:
Assignee:
The Black & Decker Incorporated
International Classes:
B23D49/00; B23D61/12; (IPC1-7): B23D61/12
Attorney, Agent or Firm:
Aoki 朗 (besides three persons)
Next Patent: STEERING DEVICE FOR OUTBOARD MOTOR