US 2012/0266732 A1 · PAIR OF SAW BLADES

Abstract

The invention concerns a pair of saw blades, including a first blade and a second blade, which are arranged to rotate around the same rotational axis in opposite directions. Each of the blades has its own blade body and peripheral cuffing elements, wherein the blade body of the first blade has a front side, which is turned towards a back side of the blade body of the second saw blade, and wherein the cutting elements form overhangs protruding from said front or back side. Said front and/or back side have/has a circumferential ridge, which is arranged peripherally inside of the cutting elements and to slide over a corresponding part or a corresponding ridge on the opposite back side and/or front side, wherein the ridge/ridges is/are made in one piece with the blade body in question and serves/serve as a spacer means to prevent the cutting elements with their overhangs to hit each other during rotation of the blades.

Claims26

Dependent claims

1-3. (canceled)

A pair of saw blades, comprising:

a first saw blade, which is arranged to rotate in a first direction around a rotational axis, and
a second saw blade, which is arranged to rotate around the same rotational axis in a second direction opposite to the first direction,
wherein each of the first and second saw blades includes a blade body and cutting elements along a periphery of each blade body, the cutting elements being arranged to run close to and in parallel with each other during rotation of the saw blades, and
wherein the blade body of the first saw blade has a front side, which is intended to be turned towards a back side of the blade body of the second saw blade, wherein the cutting elements on the blade body of the first saw blade protrude with a first overhang from said front side in a direction towards the second saw blade, in that the cutting elements on the blade body of the second saw blade protrude with a second overhang from said back side in a direction towards the first saw blade, and in that at least one of said front side of the first saw blade and said back side of the second saw blade has a circumferential ridge, which is arranged radially inside of the cutting elements with respect to the rotational axis and provided to slide over a corresponding part on the opposite back side of the first saw blade or a corresponding ridge on the opposite back side of the second saw blade, and
wherein the ridge on the at least one of said front side of the first saw blade and said back side of the second saw blade is made in one piece with the respective blade body corresponding as a spacer to prevent the cutting elements with the respective overhangs hitting each other during rotation of the saw blades.

2 more elements

A pair of saw blades, comprising:

a first saw blade which is arranged to rotate in a first direction around a rotational axis, said first saw blade including a blade body and cutting elements along a periphery of said blade body, said blade body including an orientation opening arrangement that is designed to engage and orient said first saw blade on a hub surface on a machine while said first saw blade rotates about said rotational axis;
a second saw blade which is arranged to rotate around the same rotational axis in a second direction opposite to the first direction, said second saw blade including a blade body and cutting elements along a periphery of said blade body, said blade body including an orientation opening arrangement that is designed to engage and orient said second saw blade on the hub surface on the machine while said second saw blade rotates about said rotational axis;
wherein said cutting elements of said first and second saw blades being arranged to run close to and in parallel with each other during rotation of said first and second saw blades, said orientation opening arrangement on said blade body of said first saw blade having a different shape, size, or shape and size from said orientation opening arrangement on said blade body of said second saw blade.

Dependencies are inferred from the claim text.

Pair of saw blades

Life of this patent

Pair of saw blades

Life of this patent

Abstract

Claims26