Laying machine and a blade assembly

Patent metadata

Field	Value
Publication number	US-11280060-B2
Application number	US-201816186833-A
Country	US
Kind code	B2
Filing date	Nov 12, 2018
Priority date	Jan 26, 2010
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

The present invention relates to a laying machine for laying at least one flexible casing or tube, cable or wire including: a blade arrangement for making a trench in the ground, a consolidation and laying means being arranged behind the blade arrangement, for clearing and safe-guarding the trench from collapsing while laying at least one flexible casing or tube, cable or wire into the trench. A blade assembly comprising compartments for cooling fluid and air.

First claim

What is claimed is:

1. A blade assembly for working on a work surface or structure, the blade assembly comprising:
two outer blades; and
at least one intermediate blade;
wherein the two outer blades and the at least one intermediate blade are each spaced apart by a spacer structure, wherein each spacer structure includes a hole having a radially-extending triangular shape with a closed perimeter, wherein the hole, the at least one intermediate blade, and one of the two outer blades form a compartment, wherein the at least one intermediate blade and the one of the two outer blades comprises a bore into the compartment, the bore configured to operate as an inlet into the compartment for air or cooling fluid; and
wherein a diameter of the at least one intermediate blade is equal or shorter than diameters of the two outer blades.

2. The blade assembly according to claim 1 , wherein a thickness of cutting segments of the at least one intermediate blade is about 3-12 mm.

3. The blade assembly according to claim 1 , wherein a thickness of cutting segments of the at least one intermediate blade is about 0.2-1 mm thinner than those of the two outer blades.

4. The blade assembly according to claim 3 , wherein a total thickness of the blade assembly at a periphery is about 15-30 mm, and wherein a thickness of each spacer structure is in the range of about 2-10 mm.

5. The blade assembly according to claim 4 , wherein the diameter of each of the two outer blades is in the range of about 500-1200 mm and the at least one intermediate blade is of equal diameter or up to about 100 mm shorter.

6. The blade assembly according to claim 5 , wherein the at least one intermediate blade and the two outer blades are steel plates, and wherein the spacer structures are made of steel.

7. The blade assembly according to claim 6 , wherein the segments of the at least one intermediate blade and the two outer blades are diamond impregnated.

8. The blade assembly of claim 1 , wherein a length of a perimeter of the bore is less than a length of the closed perimeter of the hole.

9. A carrier saw blade apparatus for a machine using circular cutting blades, wherein the carrier saw blade apparatus comprises:
a carrier saw blade comprising carrier blade cutting segments disposed around a rim of the carrier saw blade, the carrier saw blade having notches around the rim of the carrier saw blade disposed between the carrier blade cutting segments that are adjacent to the notches around the rim of the carrier saw blade; and
a plurality of detachable cutting segments that are configured to be detachably mounted to the carrier saw blade, wherein each detachable cutting segment overlaps one of the notches between two of the carrier blade cutting segments on the carrier saw blade;
wherein each detachable cutting segment comprises an affixing portion and a cutting edge, wherein the affixing portion is thicker than the cutting edge to form a gap between the cutting edge and the carrier cutting blade segments when affixed to the carrier saw blade;
wherein the detachable cutting segments comprise a first row of primary cutting segments individually secured to one side of the carrier saw blade and a second row of secondary cutting segments individually secured to the other side of the carrier saw blade.

10. The carrier saw blade according to claim 9 , wherein the primary and the secondary cutting segments are secured to the carrier blade in pairs, one pair consisting of a primary and a secondary cutting segment that are laterally aligned.

Assignees

• Husqvarna Ab

Inventors

• Gustafsson Lars
• Johansson Rolf
• Sjödahl Fredrik
• Nilsson Tobias
• Meister Donald F

Classifications

• E02F9/00

  Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00 (laying-out or take-up devices for trailing electric cables B66C) · CPC title

• F16L1/028

  in the ground (F16L1/026 takes precedence) · CPC title

• B23D61/026

  Composite body, e.g. laminated · CPC title

• E01C23/0933

  rotary, e.g. circular-saw joint cutters · CPC title

• E02F5/08 Primary

  with digging wheels turning round an axis {(E02F5/109 takes precedence; with digging wheels per se E02F3/18)} · CPC title