# US 10,370,820 B2 · Laying machine and a blade assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,820 B2 - Document ID: US10370820B2 - Status: Granted - Kind: B2 - Application number: 15/000,598 - Filed: 2016-01-19 - Published: 2016-05-12 - Granted: 2019-08-06 - Earliest claimed: 2011-01-26 - Assignees: Husqvarna AB - Applicants: Husqvarna AB - Inventors: Lars Gustafsson; Rolf Johansson; Fredrik Sjödahl; Tobias Nilsson; Donald F. Meister - Web page: https://patentgrep.com/patent/US10370820B2 ## CPC - E02F 5/08: with digging wheels turning round an axis {(E02F5/109 takes precedence; with digging wheels per se E02F3/18)} - B23D 45/10: with a plurality of circular saw blades {(B23D45/143, B23D45/165 take precedence)} - B23D 59/025: {the lubricating or cooling medium being applied through the mounting means of the tool, e.g. the tool spindle or hub} - B23D 61/026: {Composite body, e.g. laminated} - B28D 1/045: {Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut} - B28D 1/18: by milling, e.g. channelling by means of milling tools - B28D 7/02: for removing or laying dust, e.g. by spraying liquids; for cooling work - E01C 23/0933: {rotary, e.g. circular-saw joint cutters} - E02F 3/188: {with the axis being horizontal and transverse to the direction of travel} - E02F 5/10: with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables (laying pipes per se F16L1/00, making pipes in situ F16L1/038; laying electric cables per se H02G1/06; {drainage device- laying apparatus E02B11/02}) - E02F 5/101: {forming during digging, e.g. underground canalisations or conduits, by bending or twisting a strip of pliable material; by extrusion} - E02F 5/12: with equipment for back-filling trenches or ditches - E02F 5/145: {control and indicating devices} - E02F 7/02: Conveying equipment mounted on a dredger (conveyors in general B65G) - E02F 9/00: 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) - F16L 1/028: in the ground (F16L1/026 takes precedence) - F16L 1/032: the pipes being continuous (F16L1/038 takes precedence) - H02G 1/06: for laying cables, e.g. laying apparatus on vehicle - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) - B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q) - B28D: WORKING STONE OR STONE-LIKE MATERIALS - E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES ## 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. ## Claims ### Claim 1 A laying machine for laying a tube, cable, or wire, the laying machine comprising: a blade assembly mounted to a shaft that rotates to cut a trench in a ground; a consolidation and laying means being arranged behind the blade assembly for clearing and safeguarding the trench from collapsing while laying a tube, cable, or wire into the trench, wherein the consolidation and laying means comprises: a plow front end following the blade assembly; a feeding duct that has an inlet at an upper side of the consolidation and laying means for receiving the tube, cable, or wire; and an outlet at a rear or bottom side of the consolidation and laying means for feeding the tube, cable, or wire into the trench, wherein when the laying machine is in operation, a lowest portion of the consolidation and laying means is arranged 10-100 mm above a lowest portion of the blade assembly. ### Claim 2 A laying machine for laying a tube, cable, or wire, the laying machine comprising: a blade assembly configured to make a trench in a ground; a consolidation and laying means being arranged behind the blade assembly for clearing and safeguarding the trench from collapsing while laying a tube, cable, or wire into the trench, wherein the consolidation and laying means comprises: a plow front end following the blade assembly; a feeding duct that has an inlet at an upper side of the consolidation and laying means for receiving the tube, cable, or wire; and an outlet at a rear or bottom side of the consolidation and laying means for feeding the tube, cable, or wire into the trench, wherein when the laying machine is in operation, a lowest portion of the consolidation and laying means is arranged 10-100 mm above a lowest portion of the blade assembly, wherein the blade assembly comprises: a first blade comprising: a first working portion at the periphery of the first blade; a first central portion around an axial center of the first blade; and a support structure extending between the first working portion and the first central portion; and a second blade comprising: a second working portion at the periphery of the second blade; a second central portion around an axial center of the second blade; and a second support structure extending between the second working portion and the second central portion, wherein the first blade and the second blade are axially aligned, and wherein the first blade and second blade are spaced apart by a first spacer structure, the first spacer structure forming a first compartment between the first blade and the second blade, the first compartment extending radial from the first central portion and second central portion toward the first working portion and the second working portion, the first compartment covering at least 30% of the first spacer structure, and wherein a first inlet for air or liquid perforates the first blade between the first working portion and the first central portion to reach the first compartment. ### Claim 3 (depends on 2) The laying machine of claim 2, wherein the first compartment is in contact with the first central portion and the second central portion. ### Claim 4 (depends on 2) The laying machine of claim 2, wherein the first inlet is at or located close to the first central portion. ### Claim 5 (depends on 2) The laying machine of claim 2, wherein at least one axial wall of the first compartment is the first blade or the second blade. ### Claim 6 (depends on 2) The laying machine of claim 2, wherein a first air vent perforates the first blade and sucks air from outside the blade assembly into the first compartment. ### Claim 7 (depends on 6) The laying machine of claim 6, wherein the first inlet may include a plurality of inlets, and wherein the first air vent may include a plurality of air vents, and wherein the first compartment may include a plurality of compartments, and wherein one of the plurality of inlets and one of the plurality of air vents corresponds to one of the plurality of compartments. ### Claim 8 (depends on 2) The laying machine of claim 2, wherein the first compartment comprises a first side wall and a second side wall, each of the first side wall and the second side wall extending radially from the first central portion and the second central portion toward the first working portion and the second working portion to a predetermined distance. ### Claim 9 (depends on 8) The laying machine of claim 8, wherein the first compartment further comprises a third side wall extending between the first side wall and the second side wall and defining the outer edge of the first compartment, wherein the third side wall is at a distance closer to the first working portion and second working portion than to the first central portion and the second central portion. ### Claim 10 (depends on 8) The laying machine of claim 8, wherein the first compartment is open ended toward the first working portion and the second working portion. ### Claim 11 (depends on 2) The laying machine of claim 2, wherein the blade assembly further comprises a third blade, wherein the second blade and the third blade are spaced apart by a second spacer structure, the second spacer structure forming a second compartment between the second blade and the third blade, the second compartment covering at least 30% of the second spacer structure, and wherein a second inlet for air or liquid perforates the second blade between the second working portion and the second central portion to reach the second compartment. ### Claim 12 (depends on 11) The laying machine of claim 11, wherein the second compartment is in contact with the second central portion and a third central portion of the third blade. ### Claim 13 (depends on 11) The laying machine of claim 11, wherein the second inlet is at or located close to the second central portion. ### Claim 14 (depends on 11) The laying machine of claim 11, wherein a second air vent perforates a second blade and connects the first compartment to the second compartment. ### Claim 15 (depends on 14) The laying machine of claim 14, wherein the second inlet includes a plurality of inlets, and wherein the second air vent includes a plurality of air vents, and wherein the second compartment may include a plurality of compartments, and wherein one of the plurality of inlets and one of the plurality of air vents corresponds to one of the plurality of compartments. ### Claim 16 (depends on 14) The laying machine of claim 14, wherein a third air vent perforates the third blade and sucks air from outside the blade assembly into at least the second compartment. ### Claim 17 (depends on 11) The laying machine of claim 11, wherein the first inlet and the second inlet are aligned so that the first inlet is facing the second inlet. ### Claim 18 (depends on 11) The laying machine of claim 11, wherein the second compartment comprises a first side wall and a second side wall, each of the first side wall and the second side wall extending radially from the second central portion and the third central portion of the third blade toward the second working portion and a third working portion of the third blade to a predetermined distance. ### Claim 19 (depends on 18) The laying machine of claim 18, wherein the second compartment further comprises a third side wall extending between the first side wall and the second side wall and defining the outer edge of the second compartment, wherein the third side wall is at a distance closer to the second working portion and the third working portion than to the second central portion and the third central portion. ### Claim 20 (depends on 18) The laying machine of claim 18, wherein the second compartment is open ended toward the second working portion and the third working portion.